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What If Everyone Were Fully Informed and Talked about Politics Everyday? Political Knowledge, Political Conversation, and Public Opinion
Nam-Jin Lee (Doctoral Student) School of Journalism and Mass Communication University of Wisconsin-Madison
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What If Everyone Were Fully Informed and Talked about Politics Everyday? Political Knowledge, Political Conversation, and Public Opinion
Abstract
The simulation modeling technique has often been used to estimate statistically what public opinion would look like if people were fully informed. By correcting not only the low levels and uneven distribution of political knowledge but also those of political conversation in simulating higher-quality opinion, this study found that people's everyday conversation with family and friends has a substantial influence on policy preferences. The simulation results also suggest that the influences of conversation do not merely supplement the information effects but often times operate as countervailing forces on opinion changes. What If Everyone Were Fully Informed and Talked about Politics Everyday? Political Knowledge, Political Conversation, and Public Opinion
One of the ongoing questions among public opinion researchers is whether the apparent public ignorance of public affairs is a problem for democratic politics. This question, according to Schlesinger and Lau (2000), concerns how to resolve the paradox between the democratic ideal of an informed citizenry and the reality of public ignorance and apathy. This paradox is also represented in competing empirical findings that characterize the public as, on the one hand, knowing "virtually nothing about the public issues" (e.g., Delli Carpini & Keeter, 1996) and, on the other hand, being able to make sense of complex public issues (e.g., Gamson, 1992). Underlying these competing views on citizen competence are diverging visions of public opinion in a democracy that range from, for example, Habermas' (1989) view that public opinion, which the author claims comprises "the critical reflections of a public competent to form its own judgments" (p. 90), is the only legitimate source of justification for political domination to that of Lippmann (1922) who argues that the democratic model in which pubic opinion is a governing force is "not workable. And…it is not even thinkable" (p. 363). Also complicating the aforementioned paradox are public opinion polls and surveys that are currently considered to be the dominant indicators of public opinion. That is because, while most researchers agree that individual opinions recorded in opinion surveys are mostly ill-informed, unstable, fragmented, and inconsistent (Converse, 1964; Entman & Herbst, 2002), the very ability of surveys to convey the voice of the people has been widely debated. It is hardly new to cast doubts on whether opinion surveys can tell us reliably what the people really think and feel. Most familiar to researchers in the field are such methodological problems as question wording effects, sampling problems, and nonresponse errors, to name just a few. Some researchers also doubt that standard opinion surveys can adequately capture what citizens bring in when they think or talk about politics (e.g., Gamson, 1992). Further, other researchers criticize these opinion surveys as having perpetuated a particular conception of public opinion—that is, the individualistic and measurement oriented conception (see Price, 1992)—and criticize this conception as being atheoretical in nature and as failing to situate public opinion as a social and political construction (Blumer, 1948; Bourdieu, 1972; Herbst, 1998). All these critiques question ultimately the extent to which general opinion surveys tap something close to the classic conception of informed and deliberative opinion (Herbst, 1993; Price, 1992). In response to the questions raised on the quality of public opinion recorded in the opinion surveys, two quite different approaches have emerged to provide alternative measures of public opinion—more correctly, aggregated policy preferences—that are of higher quality than those recorded in typical mass opinion surveys. Both the deliberative opinion polls (e.g., Fishkin, 1991) and the simulation approach conducted by Bartels (1996), Delli Carpini and Keeter (1996), and Althaus (1998, 2003) share the aim of providing the estimates of, though hypothetical in nature, "higher-quality" opinions.[1] The former method models "what the electorate would think, if, hypothetically, could be immersed in intensive deliberative process" (Fishkin, 1991, p. 81). In the typical deliberative polls, a national random sample is drawn, contacted, and then brought to gather at a specific location for participation in, typically, a weekend-long deliberative forum on some policy issues. Combining scientific random sampling and deliberation, Fishkin and Luskin (2002) argue, this procedure "ensures (with extremely high probability) a microcosm of the interests that need to be articulated—and responded to—in any serious deliberation on policy issues" (p. 26). While not offering a mirror of actual "raw" opinion, Fishkin (2000) further argues that this "refined" opinion through deliberative forums represents a "picture of counterfactual yet more informed opinion" (p. 17). Owing to these features of deliberative polling, Fishkin (1991) maintains that a deliberative opinion poll is "prescriptive, not predictive. It has a recommending force" (p. 81). In contrast, the simulation methods, instead of conducting an actual deliberation of a representative sample of people, statistically correct the low levels and uneven distribution of political knowledge. This correction is done by manipulating survey respondents' levels of political information—more concretely, by replacing the actual knowledge scores of each survey respondent with the highest possible value so that respondents are made "fully informed," at least statistically. In particular, this method is intended to reveal "information effects," which Althaus (1998) defines as a "bias in the shape of collective opinion caused by the low levels and uneven social distribution of political knowledge in a population" (p. 545). Of particular concern in this paper is the certain tendency among researchers to directly equate these two approaches with each other despite their apparent differences. That is, one may think that the simulation modeling technique, with its relatively simple statistical techniques and little expenditure of money, does essentially the same job as the deliberative polling. Recent attempts to directly compare the result attained from the two methods may reinforce this tendency. Sturgis (2002), for example, attempted to test the validity and reliability of these two methods by comparing the two methods performed on the same sample of respondents. Based on the deliberative opinion poll data gathered in Britain, the author found that opinion changes derived from the deliberative opinion poll and from the simulation methods were essentially the same, providing some evidence for "concurrent validity." That is, opinion changes obtained from statistical simulation actually mirrored those from the deliberative forum. As Sturgis admitted, however, by comparing just the outcomes from the two methods, this way of validation sidesteps rather than confronts the so-called "black-box problem" that is attributed to different ways of estimating higher-quality opinion (Price & Neijens, 1997, 1998). That is, given that several intervention methods—e.g., provision of information, private deliberation, public discussion—were used in the deliberative opinion polls, one cannot identify reliably whether the opinion changes in the deliberative forums, if any did exist, were caused specifically by deliberation itself or by the information that participants acquired in the forums. By leaving this problem untouched, Sturgis's (2003) direct comparison of deliberative opinion polls and simulation methods may provide the impression that the opinion changes that had surfaced in the deliberative opinion polls were essentially comparable to "information effects" rather than to "deliberation effects." This paper represents an attempt to test, though quite indirectly, the validity of the thesis that opinion changes in simulation models are comparable to those in opinion forums. In other words, this paper asks whether deliberative opinion polls and simulation methods gauge essentially the same thing. For this aim, this study simulates another version of "higher quality opinion," by using the same simulation techniques that were used previously. This new version of simulated opinion is based on the theoretical arguments, and recent empirical evidence, that, in Katz's (1992) words, "conversation is missing" in the previous simulation modeling. My version of simulation asks what would happen if increased political knowledge comes hand in hand with increased political talk. That is, this study tries to estimate what the collective preference would look like if people were fully informed and talked about politics everyday with their family and friends. By correcting not only the low levels and uneven distributions of political knowledge but also those of political conversation in simulating higher-quality opinion, this study tries to estimate what might be called "conversation effects" above and beyond information effects. The basic logic for testing the aforementioned thesis is that, if we find just a minimal degree, if any, of "conversation effects" (which many political theorists and empirical researchers suggest have a deliberative quality with real political consequences), or if the conversation effects play mainly a supplementary role to the information effects, then this would suggest that the aforementioned thesis may not so widely differ from the reality. But if the conversation effects are found either to be substantial or to operate in complicated ways, we should call into question the validity of the aforementioned thesis. In addition, it is hoped that, by shedding some light on the roles of "talking politics" in the estimating of collective policy preferences, this paper will contribute to efforts to better gauge high-quality opinion. Simulation of Higher-Quality Opinions The simulation modeling techniques, first used by Delli Carpini and Keeter (1996) and Bartels (1996), and most comprehensively employed by Althaus (1998, 2003), represent attempts to answer statistically the question of what the public would think if it could be fully informed. As Converse (2000) commented, these simulation models provide much more "elegant" ways of estimating informed opinion than, say, models that gather estimates of informed opinion simply by discarding a segment of the respondents who can be considered ill-informed. The simulation method isolates an informed preference within relevant categories of demographic characteristics that may reflect competing interests in the real political world, thereby preserving, rather than discarding, the actual numeric weights of those categories (Althaus, 1998). That is, this method imputes the preference of the most highly informed members of a given demographic group to all members of that group. Typically, this is done through the following procedures:
1. The simulation modeling estimates a baseline equation from regressing opinion items on an index of political knowledge, demographic variables, and the interaction terms between the two. The inclusion of interaction terms between political knowledge and demographic variables ensures that the impact of increased knowledge on preferences acts differently in different demographic groups; 3. each respondent's score on political knowledge is changed to the highest possible value; 4. Individual-level fully informed predicted probabilities on each opinion item are obtained by plugging the coefficient values obtained from the baseline equation into each respondent's actual scores on the demographic variables, substituting only the new values of political knowledge and the interaction terms; and 5. Collective level fully informed opinions are attained by taking the mean of individual predicted probabilities.
In this way, the mean values provide the estimates of what collective preference would look like if everyone were fully informed but still different in terms of their demographic characteristics. As is clear in the above procedure of estimating fully informed opinion, this technique is based on the assumptions that citizens who share similar socio-democratic characteristics also share the same interests and that, if the ill-informed had (possibly to the maximum) more information, they would develop the same preferences as those who are currently informed. While one can challenge these assumptions, validity of simulated informed opinion largely depends on the specification of the baseline models used to estimate the information effect and the measurement of political knowledge (Sturgis, 2003). In particular, this technique has been used to challenge two prominent views on public opinion recorded in surveys. First, it has been used to counter the so-called "low-information-rationality" thesis by showing that there exist substantial information effects. The basic tenet of low-information rationality is that "rationally ignorant" citizens, though they lack factual information and political interests, nevertheless manage to approximate "enlightened preferences" by using various heuristics or by taking cues from the elites (e.g., Popkin, 1991; Sniderman, Brody, & Tetlock, 1991). If the low-information rationality works, the simulated fully informed opinions should not be much different from the actual opinions. Althaus (1998, 2003), Bartels (1996), Delli Carpini and Keeter (1996), Gilens (2001), and Sturgis (2003) all demonstrated that this is not the case. Information does matter. More often than not, correcting the low levels and the uneven distribution of political information significantly skewed the collective preference in one way or another (Althaus, 1998, Bartels, 1996; Gilens, 2001). Second, this technique has also been used to challenge the views corresponding to the so-called "collective rationality" (e.g., Page & Shapiro, 1992). Basically, the advocates of the collective rationality thesis argue that, although individual-level opinions are unstable and full of "noise" associated with the measurement error of surveys, the collective level opinions are stable and rational because of the power of aggregation. That is, aggregation of individual responses "cancels out" noises that are said to be random, thereby leaving only the underlying meaningful component of public opinion. However, using the simulation models, both Althaus (2003) and Duch, Palmer, and Anderson (2000) demonstrated that error terms are usually not random and that they are related systematically with various factors including political knowledge. Whereas this method provides a sophisticated way of obtaining the estimates of higher-quality opinion, there also exists a potential danger in this approach. While not changing the demographic characteristics of the respondents, this approach essentially confers elites' mode of reasoning to the general public. In other words, as Althaus (1998) stated, "this method imputes to all respondents the information processing strategies and cognitive styles employed by well-informed people" (p. 549). That is, this approach employs "elite" opinions, or rather the elite's mode of forming opinions (i.e., full information and rational reasoning based on such information) as the criteria with which to show what the opinion distribution would look like if the public as a whole operated in that mode. However, as Gamson (1992) demonstrated, average people, though deficient in factual knowledge, are nonetheless capable of sophisticated, coherent, and meaningful conversations about public issues. Schlesinger and Lau (2000) further argue that previous efforts to reconcile seemingly inconsistent findings on citizen competence are limited in that they mainly rely on how the formation of public opinion is constrained relative to elite judgment. What is needed, these authors argue, is an identification of the modes of reasoning that can explain "how the average citizen can assess policy matters without resource to much knowledge of the political context or the sort of ideological framework that help shape elite reasoning" (p. 611). This paper identifies people's everyday conversations with their family and friends as one possible candidate for people's own modes of forming opinion. Political Conversation and Deliberative Democracy There seems to exist a renewed interest in "political talk" among scholars in communication and other related fields. With the widespread use of electronic, interactive media such as the Internet and radio and television talk shows, talk as a mode of communication exerts a significant impact on the practice of political communication (Pan & Kosicki, 2001). Emphasizing the significance of talk, Katz (1995) states that "the elementary building block of participatory democracy is conversation" (p. xxx). Chambers (2003) also maintains that "Talk-centric democratic theory replaces voting-centric democracy" (p. 308). This renewed interest in political talk, in large part, accompanied a growing interest in the deliberative theory of democracy. The deliberative theory of democracy is presented as a normative theory according to which "the public deliberation of free and equal citizens is the core of legitimate political decision making and self-government" (Bohman, 1998, p. 401). Advocates of the theory hold that a citizenry's deliberation on public issues will produce more reasonable conclusions, resulting from more informed, rational, and impartial opinions. As a promising mode of public deliberation, conversation has attracted the enthusiastic attention of scholars. Much earlier, Dewey (1939) championed the virtue of conversation, saying that "the heart and final guarantee of democracy is in free gathering of neighbors on the street corner to discuss back and forth what is read in uncensored news of the day, and in gathering of friends in the living rooms of houses and apartments to converse freely with one another" (¶ 10). Habermas (1974) wrote, "A portion of the public sphere comes into being in everyday conversation in which private individuals assemble to form a public body" (Habermas, p. 198). Kim, Wyatt, and Katz (1999) even contended that conversation is the prototypical and ideal form of deliberation in the public sphere. Whereas the virtue of conversation has been widely recognized, scholars disagree wildly over the question of what type of talk serves democracy. According to Wyatt, Katz, and Kim (2000), the typical disagreement can be found between those who hold that "casual conversation and informal conversation include political topics that breed public opinion" and those who hold that "conversation and political talk are different things" (p. 73). Both of these competing arguments distinguish the two types of talk. Borrowing Wyatt, Kim, and Katz's terms (2000, pp. 99-100), I call these two conceptions of political talk as follows: formal deliberation (rule-governed and goal-oriented talk) and ordinary political conversation (causal, voluntary talk among people who typically know each other). Schudson (1997), for example, argues that ordinary political conversation—"sociable talk" in his words—has little to with democracy. According to the author, political conversation in a democracy should have a certain purpose: solving problems, deciding public policies, or protecting one's own interests. The author further argues that democratic talk is not spontaneous but essentially rule governed. Democratic talk is inherently uncomfortable because it involves disagreements and conflicts. The author thus wrote that "in what we might term 'truly public' conversation, citizens talk with other citizens who may not share their views and values" (p. 302). This type of formal problem-solving conversation, according to the author, is at the heart of democracy, and everyday sociable conversation is not. By contrast, Wyatt, Katz, and Kim (2000; see also Kim, Wyatt, & Katz, 1999; Wyatt, Kim, & Katz, 2000) argue that the life-world is not sharply divided into the public sphere and the private. Rather, political conversation and personal conversation form a continuum with bridging topics (e.g., education and crime) providing common ground. Political conversation conducted in private, even among family and friends, has political consequences. That is, talking about politics has positive effects for both citizens and the democratic process by improving the quality of public opinion and by encouraging political action. Thus the authors stated that "democratic culture receives its most concrete realization" in this form of ordinary political conversation (Wyatt, Katz, & Kim, 2000, p. 72). In the face of these competing claims about the democratic potential of everyday conversation, empirical studies may shed some useful light on the topic in question. Though empirical studies about this topic are still scarce, a brief survey of those studies would be helpful. Some studies characterize the state of "talking politics" in a negative tone. Basing their research on the survey data of the 1994 Eurobarometer and the 1994 American National Election Study, Bennett, Flickinger, and Rhine (2000), for instance, summarized that the typical citizen talked about politics only sporadically. Only a small percentage of citizens (15% of the British and 13% of the Americans) claimed to talk about politics nearly every day. But half of the people felt free to speak with most of the people whom they encountered. Similarly, Conover et al. (2002), using surveys and focus group methods, made a claim that the low levels and inequalities characterize political discussion in practice. Moreover, their focus groups avoided argumentation. The discussants in the focus groups typically neither gave reasons or justifications for their own preferences nor wanted to listen to reasons for different perspectives. Representing a more positive characterization of everyday conversation, however, Wyatt, Katz, and Kim (2000) showed that political conversation is greatly related to higher levels of both opinion expression and opinion quality and to greater political participation. McLeod et al. (1999) also found that the higher levels of interpersonal discussion have a positive impact on issue reflection (i.e., respondents' thinking, recalling, and following up on political information obtained from the media) and anticipated forum participation. In addition, according to Dutwin (2003), it is not knowledge or education but conversation that is the most powerful and important predictor of further conversation and deliberation. That is, the more one talks about politics, the more articulate their interests, opinions, and knowledge become, and thus the more capable such people are of voicing their interests, opinions, and knowledge in political discussion. So Dutwin argues that "individuals with high levels of prior political conversation have more crystallized opinions ready and waiting to be vocalized" (p. 258). By comparing cross-sectional survey data and the public forum survey data gathered before and after forum participation, Barabas (2003) also shows that people's everyday political talk essentially yields the same kind of opinion changes as the talk that occurs through participation in public forums. Although there is little definite evidence one way or another on the competing claims, recent empirical evidence seems to suggest, at least, the potential of everyday political conversation for providing a promising venue for public deliberation. It is on the basis of these recent empirical findings that the following claim is made in this paper: "conversation effects" may be an important indicator of "deliberation effects." In order for simulated opinion to resemble deliberative opinions in the public forums, the role of political conversation should be considered. Therefore, it is further argued here that, before directly comparing the outcomes from the deliberative opinion polls with the ones from the simulation models, as in Sturgis (2003), we need to use the simulation models in order to examine whether conversation effects exist. Methods This study simulates two sets of "higher-quality" opinions: hypothetical opinions of full-information and those of full-information and full-conversation. Following Althaus (1998), Gilens (2001), and Sturgis (2003), the simulation models are two logistic regression models. The first model includes political knowledge, demographics, and sets of interaction terms between these two. The second adds political conversation and its interaction terms with political knowledge and with demographics. The model for political knowledge takes the following form:
(1)
The model for both political knowledge and political conversation takes the following structure:
(2)
where is respondent 's dichotomous policy preferences, is respondent 's level of political knowledge, is respondent 's level of political conversation, is respondent 's score on the jth democratic variable, and are the respective interaction terms of political knowledge and political conversation with the demographic variables, and are the regression coefficients, and is the error term for the th observation. The estimated coefficients from the above models were used to simulate the two sets hypothetical policy preferences for respondents with less than the maximum level of political knowledge and political conversation. Two sets of simulated opinions were then compared with each other and with the actual opinions. The two simulation models were fitted to the 2000 American Nation Election Study (ANES) data. This dataset was chosen because unlike the other waves of ANES datasets, it includes a battery of items measuring the respondents' networks of political discussion, some of which were used in the current study as measures of political conversation. A total of 28 opinion items was chosen for simulation. Theses items cover almost all the opinion items that can be reasonably recoded into dichotomies (for more detailed wordings and recoding rules of the opinion questions, see the Appendix). Following Althaus (1998), these opinion questions were classified into four issue categories: foreign, fiscal, operative, and social issues.[2] The measure of political knowledge is the 17-item additive index, originally developed by Delli Carpini & Keeter (1996). The index has a maximum value of 21, with M = 10.91, SD = 5.17, and Cronbach's a = .874. The index items tap the knowledge of national political leaders, partisan control of Congress, and the ideological positions and the policy stances of major presidential candidates and their parties (for details on this measure, see the Appendix). Delli Carpini and Keeter (1996) defined political knowledge as "the range of factual information about politics that is stored in long-term memory" (p. 10). Although some skepticism has been raised as to whether these factual knowledge tests are, indeed, a manifestation of people's political knowledge (Sturgis, 2003), this measure was comprehensively validated by Delli Carpini and Keeter. It is widely accepted by many scholars as an effective "diagnostic of more profound differences in the amount and accuracy of contextual information voters bring to their judgment" (Converse, 2001, p. 333). The measure of political conversation used the following 4 items: (a) How many days in the past week did the respondent talk about politics with family or friends? (possible values ranging from 0 to 7) (b) How many discussants did the respondents identify? (none to four discussants) (c) How often does the respondent discuss politics with the first discussant? (a 4-point scale from "never" to "often") (d) How often does the respondent discuss politics with the second discussant? (a 4-point scale from "never" to "often") Since each measure has different scales, the raw values of each respondent were first transformed into percentiles and then averaged across the four items to construct an index of political conversation. The valid values ranged from .147 to .878 (M = .500, SD = .229), and Cronbach's a was .846. When the simulated opinions of full-information and full-conversation were calculated, the maximum value of .878 was assigned to all respondents' political conversation scores. Surely, this measure of political conversation, though better than a single-item measure, is still limited. Rather than tap the extent to which respondents talked about specific issues, this item measures a general behavior pattern. Furthermore, one should not expect the respondents to agree on what constitutes "politics." Thus, Katz (1995) maintained that "this evokes a too generalized self-portrait that gives too little insight into the dynamics of everyday talk about politics" (p. xxx). However, the current index of political conversation was constructed utilizing all items available in the ANES data and thus can be considered to be a stronger index than a single-item measure. The reciprocal relationship between political conversation and political knowledge is well documented (e.g., Bennett, Flickinger, & Rhine, 2000). That is, the more that people talked about political affairs, the more knowledgeable they became, and vice versa. Reflecting this relationship, in the current data, political conversation and political knowledge are highly correlated with each other, Pearson r = .502, p < .001. Quite possibly, this high correlation may have generated the problem of collinearity. However, both Althaus (1998) and Gilens (2000) suggested that the collinearity problem, in the case of the simulation modeling, does not affect the unbiasedness of the estimated coefficients. Demographic variables were constructed following Althaus (1998). A set of 23 demographic variables reflects respondents' education, income, age, partisanship, race, gender, region, marital status, parental status, religious affiliation, union membership, home owner status, children in the household, financial status, and occupational status. Among the 27 demographic variables that Althaus (1998) used, the following 4 variables were not included in this study because they were simply not available in the 2000 ANES dataset: receiving welfare, receiving other benefits, rural, and urban. There were 170 item-missing cases on the income variable, but other independent variables have missing values of less than 10. All missing values in the independent variables were imputed using the EM algorithm (Schafer, 1997). Although the multiple imputation method is preferable, this study, in order to reduce computational complexity, used the single imputation method provided by the SPSS 11.5 Missing Value Analysis. Results In this study, using Equation 1 and Equation 2 (see p. 15) as baseline models, two sets of hypothetical high-quality opinions were calculated on 28 opinion questions in the 2000 ANES data. Before presenting the detailed results, a set of likelihood ratio tests was performed in order to see generally whether "conversation effects" exist. These tests compare the log likelihoods of the unrestricted model (Equation 2), which includes all the variables, and the restricted "information effects model" (Equation 1), which includes demographics, information, and interaction terms between these two. This is essentially the model comparison between Equation 1 and Equation 2. So these tests looked at whether "conversation effects" exist above and beyond information effects. The test was found to be significant at the .05 level in 8 out of 28 opinion questions. This result suggests that in 8 out of 14 opinion questions, adding political conversation and its interaction terms with demographics significantly increased the model fit. Though not significant at the .05 level, the p values of 3 opinion items were less than .10. Then, slightly more than a third of all the p values were less than .10. This result looks disappointing at first glance. However, before drawing a hasty conclusion, it should be noted that this test looks at only the additional conversation effects after considering highly significant information effects. It should also be noted that the significant results in 8 items were obtained despite the existence of a large number of statistically insignificant interaction terms between political conversation and demographics. These results suggest that at least a modest degree of conversation effects exists in the current data.
[Table 1 about here]
More detailed results are presented in Table 1. The third column (Column B) in Table 1 lists hypothetically fully informed policy preferences. The fourth column (Column C) refers to the hypothetical policy preferences of full-information and full-conversation. The fifth column (Column D) shows "information effects," defined here as the difference between the fully informed opinion and the observed opinion (i.e., Column B – Column A). The last column (Column E) shows what I call here "conversation effects," defined as the difference between the simulated fully informed opinion and the simulated opinion of full-information and full-conversation (i.e., Column C – Column B). Thus, the conversation effect was intended to capture the unique contribution of political conversation to opinion changes above and beyond the effect of political knowledge. Table 1 shows the magnitudes and directions of conversation effects (see Column D and Column E). In terms of the size of the effects, that of information effects normally exceeded that of conversation effects. But the size of conversation effects was greater in 9 out of 28 opinion items. The average opinion shifts were 7.2% for the information effects and 5.2% for the conversation effects. This result suggests that, compared to the information effects, the magnitude of the conversation effects is substantial. The directions of the conversation effects were somewhat surprising. The signs of the entries in the third and forth columns in Table 1 (i.e., Column D and Column E) show the directions of both the conversation effect and the information effects. In Table 1, opinion items showing the different directions of the information and the conversation effects have bold-faced entries. The cases having the same direction of the two effects were 14 out of 28 opinion items. In the other half of the cases, the information effects and the conversation effects operated in the opposite directions. As a result, the simulated opinion of full-information and full-conversation were located in between the actual observed opinion and the simulated fully informed opinion.
[Table 2 about here]
Table 2 summarizes the patterns of opinion changes in each topical issue category (see also Table 4.2 in Althaus, 2003, for the directions of the information effects in more extensive issue categories). First, in the foreign issue category, similar to Althaus (1998, 2003), both the simulated fully informed opinion and the simulated opinion of full information and conversation shifted to the more interventionist direction relative to the actual opinion. Whereas 72. 3% of respondents agreed that the U.S. would be better off trying to solve some problems in other parts of the world, this response increased to 78.1% in the simulated fully informed opinion and to 81.8% in the simulated opinion of full information and full conversation (see opinion item 1 in Table 1). Second, the operative issue category covers the President's and Congress's approval ratings, party systems and party control of government, the scope of government, and campaign finance reform. In approval questions, the Clinton administration's and Congress's approval ratings dropped in both of the sets of simulated opinion, except for the simulated opinion of full information and full conversation on approval of Congress (see opinion items 2 and 3). Congress ratings dropped, to a relatively large degree (12.3%), from actual to fully informed opinion but rose slightly in the opinion of full information and full conversation (4.7%). In the question of party systems and party control of government, fully informed opinion, relative to the actual opinion, showed a tendency of being less supportive of a continuation of the two-party system of Democrats and Republicans and more supportive of divided party control of the presidency and Congress (see opinion items 5 and 6). In contrast, the simulated opinions of full information and full conversation, relative to the fully informed opinion, showed just the opposite tendency. In opinion items about the scope of governments, whereas Althaus (1998) found that the fully informed opinion is more opposed than actual opinion to the idea of "big government," the current simulation showed the mixed pattern. On the one hand, the response that "the less government the better" increased from 41.8% in the actual opinion to 52.1% (see opinion item 8 in Table 1). Fully informed opinion is also more likely to oppose placing new limits on imports (see opinion item 7). On the other hand, the response that "government is getting too strong" also dropped from 69.3% to 64.3% in the simulated fully informed opinion (see opinion item 4 in Table 1). Conversation effects were relatively small in magnitude in this category of opinion questions. In the questions of campaign finance reform, both of the sets of simulated opinions are more likely to agree that "we should protect government from excessive influence from campaign contributors" (see opinion item 9). Third, in the fiscal issue category, both sets of simulated opinions showed a similar pattern of opinion change, the only exception being the question of defense spending. They are largely less supportive of increases in government spending and less supportive of spending surpluses, both for tax cuts and for Social Security and Medicare. However, fully informed opinion showed a greater preference for increases in defense spending than simulated opinion of full information and full conversation. Finally, a variety of social issues reveal interesting patterns of information and conversation effects. In terms of the magnitude of the effects, conversation effects were particularly large in this issue category. The average opinion changes were 6.1% for information effects and 6.4% for conversation effects. In the area of affirmative action, fully informed opinion is generally less supportive both of the principles of affirmative action (see opinion item 17) and of preferential treatment of blacks in jobs (see opinion items 25 and 26). To the contrary, simulated opinion of full information and full conversation showed just the opposite: More support both of the principles of affirmative action and of preferential treatment of blacks in jobs. This simulated opinion of full information and full conversation also revealed more progressive attitudes toward gay rights than did the fully informed opinion (61.9% versus 49.8% in support of allowing gay couples to adopt children and 75.9% versus 64% in support of laws to protect homosexuals against job discrimination). In the policy area of education, the two sets of simulated opinion also showed the opposite directions of opinion changes. Simulated opinion of full information and full conversation was more supportive of school vouchers and less supportive of school integration than was fully informed opinion (see opinion items 20 and 22). Although the information effects and the conversation effects operated in the same directions in the questions of immigration and the death penalty, they were not unidirectional in the questions concerning gun control, health insurance, crime, and a law making English the official language. Discussion This paper, using the simulation modeling technique that was used by Althaus (1998), Gilens (2001), and Sturgis (2003), calculated both simulated fully informed opinions and the simulated opinion of full information and full conversation. The results suggest that there exists a substantial degree of "conversation effects" and that these conversation effects do not merely supplement the information effects but often times operate as countervailing forces on opinion changes. This tendency was more evident in issues concerning the party system and party control and in a variety of social issues such as affirmative action, gay rights, health insurance, gun control, and education. Particularly interesting are the patterns of conversation effects found in the social issue category. Compared to information effects, the conversation effects found in this issue category revealed not only greater magnitudes of opinion changes but also more consistent patterns that were quite different from information effects. Especially in such issues as affirmative action and gay rights, the simulated opinion of the full information of full conversation showed consistently more progressive policy preferences and more sympathetic attitudes toward minority rights than did fully informed opinion. This result calls into question the validity of the thesis mentioned at the outset of this paper. The thesis suggests that opinion changes in deliberative forums are comparable to information effects. However, this study demonstrates that, even after controlling for the low levels and uneven distribution of political knowledge, political conversation produced a substantial degree of, and complex patterns of, opinion changes. This suggests that any direct equating of the opinion changes that occurred in the deliberative opinion polls with those caused by the "information effects" could mask the actual effects of various factors that produce opinion changes in the real deliberative forums. Despite the existence of "conversation effects," it cannot simply be concluded that the simulation modeling would be improved if political conversation were included in the simulation models or that the simulated opinion of full information and full conversation would be more representative or more deliberative than the simulated fully informed opinion. However interesting they are, the opinions simulated here are hypothetical in nature. It is not worth debating which set of simulated opinions is of a higher quality. In addition, the meanings of "fully informed" or "full-conversation" should be taken with caution. As Althaus (2003) stressed, these terms are meaningful only in relation to specific indexes of general political knowledge tests or of political conversation. These particular measures of knowledge and conversation may or may not be related to what people really bring in when they think and talk about specific policy issues. Indeed, there are some suggestions that standard political knowledge tests or simple measures of political conversation may not adequately capture people's own modes of reasoning and sense-making (Gamson, 1992; Schlesinger & Lau, 2000). Given the hypothetical nature and limited meanings of simulated opinions, what the current comparison between the two simulation models reveals is simply that political conversation is also unevenly distributed across different social categories of people, that correcting for this uneven distribution produces substantial changes in policy preferences, and that these changes have certain patterns that are quite different from those produced by information effects. To further examine whether or not conversation effects are supplementary to information effects, it is helpful to compare the patterns of opinion changes found in the current study with those in Gilens (2001), which demonstrated a supplementary role of policy-specific knowledge to general political knowledge. In Gilens' findings, effects both of general knowledge and of policy-specific knowledge work in different directions only in one out of 8 opinion simulations. In the current study, information effects and conversation effects produced different patterns of opinion changes in 14 out of 28 simulations. This difference suggests that conversation effects do not merely supplement information effects. Concerning the relationship between information effects and conversation effects, one might wonder why the two effects quite often operate in opposite directions, as revealed in the current analysis. Given the reciprocal positive relationship between political knowledge and political conversation, one can easily expect that the two effects would operate in the same direction. The result was just the opposite. To further explore the reason for which the two effects are counteractive, the estimated coefficients of "political knowledge" and "conversation" in the baseline models were examined. In terms of the main effects, the coefficients of political knowledge and political conversation have the same valence sign most of the time. This suggests that the counteractive nature of the two effects may have been caused by the complex interrelationship between political conversation and sets of demographic variables. The information effects and conversation effects seem to operate in a way that is more complicated than one might expect. Several limitations of this study should be noted. First, the analyses were conducted on a limited number of opinion items. To meaningfully generalize the current findings, the further analysis of more cases in more extensive issue categories is necessary. Second, there is still uncertainty concerning the extent to which the simulation methods that were used in this study reliably isolated conversation effects from information effects. Given the complex relationship between political knowledge, political conversation, and public opinion, a more sophisticated way of separating conversation effects should employed. Third, there still remains more room for improvement, especially in the measures of political conversation. Various ways of forming an index should be tested for improvement. Finally, this study did not conduct the patterns of opinion changes along various subgroups of the sample. Given the complex patterns that emerged in the current analysis, comparisons between various categories of subgroups would be fruitful for our understanding of the underlying mechanism through which conversation effects work.
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Table 1 Effects of Political Knowledge and Political Conversation by Opinion Questions Opinion Question Var. No. A: Actual Opinion B: Full Information C: Full Information and Full Conversation D: Effects of Information (B–A) E: Effect of Conversation (C–B) Foreign Issue 1. Oppose isolationism v514 72.3 78.1 81.8 5.8 3.7 Operative Issues 2. Clinton approval 3. Congress approval 4. Government not getting too strong 5. Favor the two-party system 6. Prefer divided government 7. Oppose import limits 8. More things government should do 9. Oppose campaign finance reform v339 v356 v1513 v1650 v397 v512 v1420 v1489 66.0 59.6 30.7 38.0 52.4 52.0 58.2 24.4 62.4 47.3 35.7 36.1 62.2 57.6 47.9 19.5 61.1# 52.0 36.4* 41.3* 58.6** 60.3* 49.8# 17.7# –3.6 –12.3 5.0 –1.9 9.8 5.6 –10.3 –4.9 –1.3 4.7 .7 5.2 –3.6 2.7 1.9 –1.8 Fiscal Issues 10. Increase government spending/services 11. Defense spending should be increased 12. Approve using surplus for tax cuts 13. Disapprove surplus for Social Security v550 v587 v688 v691 39.0 39.5 63.2 17.8 37.1 44.9 45.7 39.9 31.3 43.6 37.7 48.6 –1.9 5.4 –17.5 22.1 –5.8 –1.3 –8.0 8.7 Social Issues 14. Immigrants should be decreased 15. Favor private health insurance 16. Black should help themselves 17. Oppose affirmative action 18. Allow homosexuals in the military 19. Favor more gun control 20. Favor school voucher program 21. Oppose English as official language 22. Oppose School integration 23. Oppose child adoption by gay couples 24. Oppose death penalty 25. Government should ensure blacks fair treatment in jobs (Percent opposed) 26. Against preferences for blacks in jobs 27. Against laws to protect homosexuals 28. Address social problem to reduce crime v508 v614 v645 v674 v724 v728 v742 v745 v747 v748 v749 v800
v803 v1478 v1486a 44.5 30.9 43.8 45.3 75.7 58.8 52.7 25.0 46.1 55.0 26.6 44.6
81.0 32.6 48.2 26.3 35.8 41.0 53.1 78.0 49.9 55.0 22.7 55.7 50.2 36.0 43.9
82.4 36.0 60.9 22.6 31.9* 37.1* 47.7 79.9 52.7 52.4 24.3 49.2 38.1 46.6 26.1**
73.0 24.1** 58.7 –18.2 4.9 –2.8 7.8 2.3 –8.9 2.3 –2.3 9.6 –4.8 9.4 –.7
1.4 3.4 12.7 –3.7 –3.9 –3.9 –5.4 1.9 2.8 –2.6 1.6 –6.5 –12.1 10.6 –17.8
–9.4 –11.9 –2.2
Notes: Bold-faced entries denote the information effects and the conversation effects operate in the same direction. # p < .10, * p < .05, ** p < .01 in the likelihood ratio test between Equation 1 and 2 (see p. ). Table 2 Comparisons between Surveyed Opinion, Simulated Opinion of Full Information, and Simulated Opinion of Full Information and Full Conversation Opinion Topics Full Informationa Full Information and Full Conversationb Foreign Issues Isolationism
Operative Issues Clinton approval Congressional approval Party system and party control
Scope of government
Campaign finance reform
Fiscal Issues General
Surplus
Social Issues Affirmative action
Gay rights Education
Crime
Immigration
Health insurance
Gun control English as official language
More interventionist
Less approving Less approving Less supportive of the two-party system and more supportive of divided party control of the presidency and Congress More agree that "government is not getting too strong," but favor less government More supportive
Less supportive of increase in government spending and services Less supportive of using surplus both for tax cuts and for Social Security and Medicare
Less supportive both of the principles of affirmative action and of preferential treatment of blacks in jobs Mixed More supportive of school voucher and less supportive of school integration more supportive of addressing the social problems that causes crime Less agree that immigrants should be decreased More supportive of private insurance Favor less gun control More supportive
More Interventionist
Less approving More approving More supportive of the two-party system and less supportive of divided party control of the presidency and Congress About the same
More supportive
About the same
Less supportive of using surplus both for tax cuts and for Social Security and Medicare
Less supportive both of the principles of affirmative action and of preferential treatment of blacks in jobs More progressive Less supportive of school voucher and less supportive of school integration More supportive of punitive solution Less agree that immigrants should be decreased Less supportive of private insurance Favor more gun control Less supportive
Notes: a Comparisons was made to the actual surveyed opinion (i.e., Column A and B in Table 1) b Comparisons was made with the simulated fully informed opinion (i.e., Column B and C in Table 1). Appendix Measures of Political Information The additive index of political knowledge include following items: Post-interview interviewer rating (v1745); the offices held by Trent Lott (v1447), William Rehnquist (v1450), Tony Blair (v1453), and Janet Reno (v1456); the majority party in the House (v1356) and Senate (v1357); the relative ideological positions of Republicans and Democrats (v1382, v1383), Gore and Bush (v1372, v1374); and the relative policy position of Gore and Bush on government spending (v562, v568), the parties on government spending (v574, v580), Gore and Bush on defense spending (v592, v597), the parties on defense spending (v602, v607), 3710, v3711), Gore and Bush on job assurance (v625, v630), the parties on job assurance (v635, v640), Gore and Bush on abortion(v696, v698), Gore and Bush on environmental regulation (v783, v790), the change in budget deficit in Clinton presidency (v807, v1590) Opinion Items
v397: Preference for divided government Do you think it is better when one party controls both the presidency and Congress, better when control is split between the Democrats and Republicans, or doesn't it matter? 1. better when control is split 0. better when one party control both; it doesn't matter
v508: Increase/decrease immigration Do you think the number of immigrants from foreign countries who are permitted to come to the United States to live should be increased, decreased, or left the same as it is now? 1. decreased 0. increased; let the same as it is now
v512: Favor/oppose import limits Some people have suggested placing new limits on foreign imports in order to protect American jobs. Others say that such limits would raise consumer prices and hurt American exports. Do you favor or oppose placing new limits on imports, or haven't you thought much about this? 1. oppose 0. favor
v514: Isolationism Do you agree or disagree with this statement: This country would be better off if we just stayed home and did not concern ourselves with problems in other parts of the world. 1. disagree 0. agree
v550: Government services/spending Where would you place yourself on this scale, or haven't you thought much about this? A combined 5-point scale from "reduce government spending and services a great deal" to "increase government spending and services a great deal." Values of 4 and 5 were coded as 1, and the others as 0.
v587: Defense spending Do you feel the government should decrease defense spending, increase defense spending, or is the government spending on defense about the right amount now? A combined 5-point scale from "decrease defense spending a great deal" to "increase defense spending a great deal." Values of 4 and 5 were coded as 1, and the others as 0.
v614: Health insurance Where would you place yourself on this scale, or haven't you thought much about this? A combined 5-point scale from "strongly-government insurance plan" to "strongly-individual plan." Values of 4 and 5 were coded as 1, and the others as 0.
v645: Aid to blacks Which is closer to the way you feel, or haven't you thought much about this? Should the government help blacks to a great extent or only to some extent? Should blacks have to help themselves to a great extent or only to some extent? A combined 5-point scale from "Government help blacks to great extent" to "Should help themselves to a great extent." Values of 4 and 5 were coded as 1, and the others as 0.
v674: Affirmative action Some people think that if a company has a history of discriminating against blacks when making hiring decisions, then they should be required to have an affirmative action program that gives blacks preference in hiring. What do you think? Should companies that have discriminated against blacks have to have an affirmative action program? 1. No, they should not have to have affirmative action 0. Yes, they should have to have affirmative action
v688: Using surplus for tax cuts Recently, there has been a lot of talk about how to spend the extra money the federal government is likely to have in the near future. Some people have proposed that most of the expected federal budget surplus should be used to cut taxes. Do you approve or disapprove of this proposal? 1. Approve 0. Disapprove
v691 Using surplus for Social Security/Medicare Some people have proposed that most of the expected federal budget surplus should go to protecting social security and Medicare. Do you approve or disapprove of this proposal? 1. Disapprove 0. Approve
v724: Homosexuals in the military Do you think homosexuals should be allowed to serve in the United States Armed Forces or don't you think so? 1. Homosexuals should allowed to serve 0. Homosexuals should not be allowed to serve
v728: Gun control Do you think the federal government should make it more difficult for people to buy a gun than it is now, make it easier for people to buy a gun, or keep these rules about the same as they are now? 1. More difficult 0. Make it easier; keep these rules about the same
v742: School vouchers Do you favor or oppose a school voucher program that would allow parents to use tax funds to send their children to the school of their choice, even if it were a private school? 1. Favor school voucher program 0. Oppose school voucher program
v745: English official language Do you favor a law making English the official language of the United States, meaning government business would be conducted in English only, or do you oppose such a law? 1. Oppose 0. Favor; Neither favor nor oppose
v747: School integration Do you think the government in Washington should see to it that white and black children go to the same schools or stay out of this area as it is not the government's business? 1. Stay out of this area as it is not the government's business 0. See to it that white and black children go to the same schools; Other, depends
v748: Child adoption by gay couples Do you think gay or lesbian couples, in other words, homosexual couples, should be legally permitted to adopt children? 1. No 0. Yes
v749: Death penalty Do you favor or oppose the death penalty for persons convicted of murder? 1. Oppose 0. Favor
v800: Government should ensure Blacks equal treatment in jobs How do you feel? Should the government in Washington see to it that black people get fair treatment in jobs OR is this not the federal government's business? 1. This is not the federal government's business 0. Government in Washington should see to it that black people get fair treatment in jobs; other
v803 Preferences for blacks in jobs Some people say that because of past discrimination, blacks should be given preference in hiring and promotion. Others say that such preference in hiring and promotion of blacks is wrong because it gives blacks advantages they haven't earned. What about your opinion -- are you for or against preferential hiring and promotion of blacks? 1. Against preferential hiring and promotion of blacks 0. For preferential hiring and promotion of blacks
v1420: Less government, or more things government should do Next, I am going to ask you to choose which of two statements I read comes closer to your own opinion. You might agree to some extent with both, but we want to know which one is closer to your own views. 1. there are more things that government should be doing? 0. the less government, the better
v1478: Laws to protect against job discrimination of homosexuals Recently there has been a lot of talk about job discrimination. Do you favor or oppose laws to protect homosexuals against job discrimination? 1. Oppose 0. Favor
v1486a: Ways to reduce crime Do you think that the best way to reduce crime is to address social problems or to make sure criminals are caught, convicted, and punished, or that we should do something in between, or haven't you thought much about this? A combined 7-point scale from "Much better to address social problem" to "Much better to punish criminals" Should help themselves to a great extent." Values of 1, 2, and 3 were coded as 1, and the others as 0.
v1489: Campaign finance Recently, there has been a lot of talk about campaign finance reform. Some people believe that we should protect government from excessive influence by campaign contributors. Others think that protecting the freedom of individuals to financially support political candidates and parties is more important. Which is closer to the way you think, or haven't you thought much about this? 1. Protect government from excessive influence 0. Protect the freedom of individuals
v1513: Government is getting too powerful or not too strong What is your feeling, do you think the government is getting too powerful or do you think the government is not getting too strong? 1. Government not getting too strong 0. Government too powerful; Other
v1650 Two party system Which of the following outcomes regarding political parties best represents what you would like to see happen? You can just tell me the number of the outcome you choose. 1. Continuation of the tow party system 0. Elections in which candidates run as individuals without party labels; the growth of one or more parties that could challenge the Democrats and Republicans
[1] Opinion quality means many things (Price & Neijens, 1997, 1998). Here, "higher-quality opinion" refers to the measures of those opinions that are better informed, more deliberative, and/or more representative. Specific meanings of these features differ across these two approaches.
[2] The foreign issue category covers whether the U.S. should be involved in solving problems around the world; the fiscal issues include such issues as government spending and taxation; the operative issues include the size and the scope of the federal government, government regulation of the economy, and congressional and presidential approval; and the social issues deal with such issues as affirmative action, the death penalty, and minority rights (Althaus, 1998).
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