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The Role of Intentionality in Social Explanation: How Individual Difference Variables Can Help Build Communications Theories of Persuasion Janas E. Sinclair 164 Sunset Avenue Apt. 3 Palm Beach, FL 33480 (561) 835-4052 [log in to unmask] ABSTRACT Philosophers of science emphasize that social scientific theories provide the most complete explanation of phenomenon when they account for the intentions of individuals. In this paper it is argued that mass communication theories of persuasion are also best able to explain human behavior when the intentions of individuals are considered. Mass communication theories of persuasion that do not account for intentions are examined. Individual difference variables are also examined as a way in which researchers may account for the intentions of individuals. To identify a phenomenon as intentional is to identify it as something which was brought about for some reason . . . [which] suggests that an adequate explanation of a social phenomenon would have to include, or be based upon, an account of the reasons or motivations which led to the behavior which brought about the phenomenon in question (Fay & Moon, 1977/1994, p. 30). Philosophers of social science have distinguished the social sciences from the natural, or biological, sciences on the basis of intentionality (Elster, 1979; Little, 1991). In the biological sciences, one of the primary goals is to understand the functioning of the human body. Knowledge of people's intentions is peripheral to this goal. Although people's intentions concerning health-related behaviors may affect their health, the relationship between motives and the occurrence of health-related behavior is primarily a topic of study for the social sciences. In the social sciences the primary purpose of study is to understand human behavior, and with most social scientific theories it would be difficult to sketch even a simple description of human behavior without alluding to the intentions that motivated that behavior. Consider the examples of people who smoke, or people who fail to obtain routine medical check-ups. It is hard to contemplate these behaviors without wondering what motivated people to act (or not act) in these ways. Mass communication research is one field of social science in which intentions may be of particular interest. In the case of people who smoke or people who fail to obtain check-ups, the central research question might be: How can these people be persuaded to take better care of their health? Current models of attitude change, including the Elaboration Likelihood Model (ELM; Petty & Cacioppo, 1981; 1986) and Heuristic-Systematic Model (HSM; Eagly & Chaiken, 1993) both emphasize the effects of individual intentions on the degree to which people attend to a persuasive message. If a message corresponds with people's intentions, then they will process the message more carefully than if the message does not correspond with their intentions (Eagly & Chaiken). For example, an anti-smoking message might emphasize the social stigma attached to those who smoke. This message might not be persuasive for people who are not particularly motivated to consider the social acceptability of their behavior. These people will most likely pass over the message without thinking about it very carefully and neither their attitudes nor their behavior will be influenced. On the other hand, a message that corresponds with people's intentions may grab their attention. They may think about the message carefully and as a result their attitudes, and eventually their behavior, may change. Understanding intentions appears to be a crucial step in understanding persuasion. It is possible, however, to describe behavior without describing intentions. Dennett (1971), a philosopher of science, describes two approaches in which individual intentions are not considered: the design stance and the physical stance. In persuasion research, adoption of the design stance would lead theorists to develop a single model of persuasion that would apply to all people. It seems that early research in mass communication approached the study of persuasion from the design stance. As in the design stance, early models of media effects did not consider how differences among people, including differences in intentions, might affect persuasion. Another theoretical approach that does not involve consideration of individual intentions is the physical stance, which for human subjects, is basically a physiological explanation of behavior. Persuasion models based on the physical stance would describe persuasion processes at the level of neuro-physiology -- an approach that has not been widely adopted by communication scholars, but does appear in research examining subconscious processing (Zajonc, 1980; Janiszewski, 1990). Dennett also describes and advocates a third approach to studying phenomenon, the intentional stance. According to Dennett, knowledge of the intentions that underlie and give rise to behaviors not only provides a more complete picture of a given phenomenon but also enhances the predictive power of a theory. When the reasons for a behavior are understood, better predictions can be made concerning when the behavior will or will not occur based on individuals' intentions. Theories can more clearly delineate the processes that lead to certain behaviors when individual intentions concerning communications-related behaviors are specified. It seems that current models of persuasion, such as the ELM and HSM, can be described as examples of the intentional stance. These models allow for consideration of the effects of individuals' intentions on persuasion. If researchers adopt the ELM or HSM approach to persuasion, then they are faced with the question of how they can account for individuals' intentions as these models prescribe. One method is to consider the effects of stable individual differences in personality. Many personality variables are conceptualized as measures of people's stable intentions or goals, and these goals are thought to function as the organizing forces behind people's behaviors (Murray, 1938; Allport, 1937). A personality variable, therefore, can serve as a vehicle for achieving the kind of "adequate explanation" of persuasion that Fay and Moon (1977/1994) advocate for all social scientific research, because personality variables can account for the reasons for behavior. The first goal of this paper is to consider three basic approaches to research -- the design, physical, and intentional stances -- and to examine how these stances have manifested themselves in mass communication research on persuasion. The second goal is to examine the role of personality variables in accounting for individuals' goals in the case in which the intentional stance is adopted for the study of persuasion. Before these goals are addressed, however, the basic meaning of intentionality should be examined so that the implications of adopting or not adopting a research stance that allows for intentionality will be more clearly understood. Intentionality The philosopher Elster (1985/1994) defines intentionality in terms of three requirements for the relationships between people's cognitions and goals on one hand, and their behavior on the other. The first requirement for intentionality is that given a person's beliefs, his or her behavior must be perceived as the best means to realize a given desire. In other words, the behavior must be the best way to achieve a certain goal according to the person's perceptions. This requirement alone, however, is not enough to ensure intentionality. First, it is not sufficient requirement for the actual occurrence of behavior. Second, the requirement does not rule out the possibility that a behavior might be caused by something other than a person's desires and cognitions. For example, as part of a scene in a play an actor might be instructed to shudder. The actor might hold the beliefs and desires that would lead her to shudder; however, when she shudders in the scene it might actually be because she saw a snake on the set. Such involuntary behavior should be excluded from the definition of intentionality. Elster, therefore, states that the second requirement for intentionality is that the person's cognitions and desires must be the direct cause of behavior. Given these two requirements, however, it is still possible that a person's cognitions and desires caused the behavior through some non-intentional process. For example, consider that a rock climber desires to be rid of the weight and danger of holding another climber on a rope. He believes that by letting go of the rope he can fulfill this desire. His beliefs and desire are extremely unsettling, and they cause him to panic. This panic, in turn, leads him to lose his grasp of the rope. In this case, the climber's belief and desire caused the behavior, yet the behavior was not intentional because he did not purposely choose the behavior. Elster suggests we would not want to consider his letting go of the rope in this instance as intentional behavior. In order to eliminate such phenomenon from the definition of intentionality, the third requirement states that the person's cognitions and desires must cause the behavior qua reasons. In other words, intentional behavior must involve conscious consideration and selection of that behavior. Elster provides further insight into the meaning of intentionality by referring to the myth of Ulysses and the Sirens (Elster, 1979). Ulysses wanted to hear the beautiful song of the Sirens, but did not want to fall under the Sirens' spell and meet his death. Therefore he instructed his crew to tie him to his ship. Additionally, the crew was not to release him, no matter how much he might beg, while he listened to the Sirens. Ulysses demonstrated intentionality because rather than being a "passive and irrational vehicle for his changing wants and desires" (Elster, 1979, p. 36) he consciously chose the action that allowed him to achieve his desire (listening to the Sirens) given his cognitions about the situation (he would die unless he took certain precautions). In mass communication research, it is similarly theorized that people choose to either carefully consider persuasive messages or ignore them and then act accordingly. Not all theoretical perspectives, however, have considered the intentionality of behavior. In the following sections, the implications of how intentionality is treated will be considered for three types of persuasion theories: bullet theory, subconscious processing theories, and information processing theories. The Design Stance: Bullet theory In the article "Intentional Systems" (1971) Dennett describes three strategies an investigator may adopt when examining what he calls a "system" (systems can include individuals). The first two strategies, the design and physical stances, do not involve intentions. A mass communication persuasion theory based on the design stance would consider the basic "design" of the relationships between the message and any receiver. The design stance does not allow for consideration of people's intentions, nor does it permit consideration of the differences among people or how these differences may mediate persuasion. Dennett illustrates the design stance with the example of a chess-playing computer. In order to predict the computer's next move, an investigator should consider the computer's design, or program. If the design stance is applied to human behaviors, then these behaviors would also be understood in terms of the common "program" that applies to any person. The design stance would not allow for consideration of different programs that apply to different people. The mass communication approach that most closely resembles the design stance is the "bullet theory" (described by O'Guinn & Faber, 1991) or "direct effects model" (described by Petty & Priester, 1994). Early research in mass communication was based on the assumption that the persuasive power of the mass media was potent and direct. An initial study conducted during World War I concluded that the power of propaganda was considerable (Lasswell, 1927). Events such as the rise of the Nazi movement in Germany, the stock market crash of 1929, and the hysteria that followed the radio broadcast of Orson Wells' "War of the Worlds" were interpreted as evidence that messages delivered via the mass media had direct effects on people's attitudes and behavior. This "bullet theory" of persuasion focused more on the role of media messages as vehicles of persuasion than on the role of the individual in receiving the message. It was assumed that "if the right message was designed and delivered . . . people would immediately change their views to conform with its intent" (O'Guinn & Faber, 1991). The bullet theory approach to persuasion seems to exemplify the design stance. In bullet theory, humans were viewed very much as if they were computers functioning according to programs that read as follows: "adopt and act on all messages that meet requirements X, Y, and Z." Differences that might exist among the "programs" of different people were not considered. As with the design stance, predictions based on the bullet theory were made "solely from knowledge or assumptions about the system's functional design, irrespective of the physical constitution or condition of the innards of the particular object" (Dennett, 1971, p. 88). In the case of bullet theory, a functional design was inferred from observance of current events. It was assumed that the function of media messages was to mold attitudes and behavior, and the function of people was to conform to these messages -- irrespective of the differences that might exist among people's reactions to media messages. The bullet theory also exemplifies the design stance because motivations were not considered. The bullet theory considered people's role in persuasion only in terms of a basic functional design, not in terms of people's personal motivations to either consider or basically ignore a persuasive message. The Physical Stance: Subconscious Processing A second strategy that Dennett proposes is the physical stance. According to Dennett, predictions from the physical stance are based on examining the physical state of an entity and then applying the relevant laws of nature. The physical stance is frequently adopted when an investigator finds that systems have failed to operate according to their design. The investigator then searches for the physical cause of malfunction. For example, if the chess-playing computer failed to respond to any typed messages, one might take the physical stance and check to see whether it was plugged in. If a person failed to respond to a persuasive message in the predicted manner, it is conceivable that theorists could invoke a physical description of the abnormalities that caused this break-down from the hypothesized design. Such physical abnormalities, however, do not seem to be of central interest to mass communication theories of persuasion. These physical break-downs seem to have more to do with the questions typically asked in the fields of abnormal psychology or physiology. In mass communication theory, researchers who subjected the bullet theory to empirical tests during the 1940's found that the persuasive effects of the media were not nearly as strong as the model predicted. In response to multiple findings that audiences were not operating according to the hypothesized design, a new perspective developed in which mass media were seen as having limited effects. These "limited effects" models posited that numerous factors mediate whether or not a message will result in attitude change. Although most models based on limited effects did not stem from the physical stance, some mass communication research in the 1980's and 1990's does appear to exemplify this approach. Theory and research on subconsciousness processing does not consider individuals' motivations, while it does focus on the physical states that correspond with a certain type of persuasion. Research on subconscious processing examines persuasion that occurs beyond the threshold of awareness. Studies have found that increasing the amount of subconscious processing that a stimulus receives results in increased liking of the stimulus. This increased liking is known as the "mere exposure effect," because it can be brought about by increasing the length of exposure to a stimulus even if the stimulus is not consciously processed. It is theorized that subconscious analysis of a stimulus leads to a feeling of familiarity, which is interpreted as liking. Subconscious processing has been explained in terms of physical descriptions of brain structure. Zajonc (1980) states that the locus coeruleus, a network of the central nervous system, may be capable of generating the affective responses associated with subconscious processing without activation of the autonomous nervous system, which is responsible for conscious processing. Janiszewski (1990) uses physical descriptions of the right- and left-brain hemispheres to account for subconscious processing. His research indicates that when one hemisphere of the brain is engaged in active processing, the non-activated hemisphere may engage in subconscious processing of a stimulus in the corresponding field of vision. According to Dennett, the physical stance can be employed not only to describe malfunctions in a system but also to describe normal functioning, as Zajonc and Janiszewski demonstrate for a basic type of persuasion process. Providing a physical explanation of more sophisticated processes, however, may be very difficult. Dennett states that "attempting to give a physical account or prediction of the chess-playing computer would be a pointless and herculean labor, but it would work in principle" (p. 89). Similarly, it seems that providing a physical account of intentional processes, in which people consciously consider a message and its relation to their own attitudes, would also prove to be a herculean task. For the limited scope of subconscious processes, however, it seems that the physical stance is the correct approach. Subconscious processes involve relatively simple responses, so it is both possible and practical to describe them physically. It also seems correct that the study of subconscious processes would not include intentionality in its scope, because these processes are defined as inaccessible to conscious processing. The physical stance has the advantage over the design stance of allowing the investigator to consider what Dennett calls "the innards of a particular object." Unlike the design stance, the physical stance allows the researchers to consider physical differences between individuals and to examine how those differences affect subconscious processing and persuasion. The Intentional Stance: Information Processing Models of Persuasion While physical descriptions may be useful for describing subconscious processing, it seems that such descriptions would not be practical for describing conscious, intentional processing of persuasive messages -- or at least not without substantial advances in the field of neuro-physiology. The first strategy, the design stance, also does not appear to be the right stance for communications scholars who study this type of persuasion. Theories such as the bullet theory, which are based on the design stance, are insufficient for accounting for important mediating variables in persuasion, such as the goals that may lead individuals to pay attention to certain types of messages. When research in the 1940's subjected the bullet theory to empirical testing, the theory demonstrated poor predictive value, which according to Dennett is a typical problem of design theories. Design theories are based on one model to describe the functioning of all subjects, and are therefore likely to suffer in terms of predictive value because these theories do not take into account individual differences in motivations and goals. As Dennett states, "in the end I may not be able to frame a very good prediction, if I am unable to determine with any accuracy what information and goals the [system] has" (1971, p. 90). The third strategy that Dennett outlines is the intentional stance. This stance leads to the development of theories that do take intentions into account, and therefore should have enhanced predictive value. Dennett considers intentionality as an investigative strategy that researchers may adopt as they attempt to understand an entity, or system. He states that under the intentional stance, behavior can be predicted "by ascribing to the system the possession of certain information and by supposing it to be directed by certain goals, and then by working out the most reasonable or appropriate action on the basis of these ascriptions and suppositions" (1971, p. 90). The intentional stance allows for enhanced prediction because, in part, the researcher attributes certain goals to the subject. Based on these goals, the reasons for behavior can be more specifically defined. In mass communication, the intentional stance was adopted as the theoretical focus of the field shifted from examining "what the media did to people" (the bullet theory approach) to examining "what people did with the media" (Katz, 1959). Persuasion theorists began to consider people as active participants in persuasion whose goals might lead them to either carefully consider a message or to skim over it. The development of the construct of involvement (Krugman, 1965; 1966) represents the beginnings of the intentional approach in persuasion research. Involvement generally refers to the personal relevance of a message to a particular individual. Research results demonstrated that involvement affects message processing, which in turn affects persuasion. Information processing models further developed the construct of involvement and the intentional approach. The Elaboration Likelihood Model, or ELM (Petty & Cacioppo, 1981; 1986), and the Heuristic-Systematic Model, or HSM (Eagly & Chaiken, 1993) each posit two routes to persuasion: the central, or systematic, route and the peripheral, or heuristic, route. Central route processing involves careful evaluation of a persuasive message and results in relatively stable attitude shifts that are predictive of behavior. Central route processing most closely parallels the conscious thought processes that Elster defines as intentional behavior. The second processing route, on the other hand, involves processing that may be conscious but is less deliberate. Peripheral route processing does not involve careful evaluation of the message. Instead, attitudes are formed based solely on the recognition of positive or negative "heuristic cues." Heuristic cues can be related to the message itself (such as the number of arguments presented) or to the message source (such as his or her attractiveness). Both the ELM and HSM identify two important determinants of whether a message will be processed centrally or peripherally: ability and motivation. Ability is identified as an important determinant because it is assumed that the careful thinking involved in central processing requires a greater amount of cognitive resources than is required by simply responding to heuristics. Motivation is identified as an important determinant because it is assumed that people are "'economy-minded souls' who wish to satisfy their goal-related needs in the most efficient ways possible" (Eagly & Chaiken, 1993, p. 330). In general, people are expected to favor the least effortful mode of processing, which is peripheral processing, unless they are particularly motivated to carefully consider a message. Individuals' processing goals, therefore, influence the degree to which they will carefully process a message. If their goals lead them to carefully consider a message, then the likelihood of stable attitude change increases along with the probability that these attitudes will be predictive of behavior. To return to the opening scenario, let us assume that a communications researcher wishes to design a message that decreases the rate of smoking in a certain target population. The persuasion task at hand involves convincingly people to break a habitual pattern of behavior. Therefore, the researcher decides that the type of processing most relevant to the persuasion task will be conscious processing. It seems that a conscious, intentional effort will be required for smokers to break this habit, therefore the physical stance is eliminated as a possible approach to this research problem. The researcher also feels that development of the most effective anti-smoking message will depend on the individual goals that influence the degree to which members of the target population will make the effort to carefully consider the message. The design stance, therefore, is also eliminated and the intentional stance is adopted, because unlike the design stance, the intentional stance allows for consideration of individuals' goals. At this point, the researcher is faced with the question of how best to account for intentionality in terms of message processing. How can the beliefs and desires of the audience members be assessed? If prediction can be enhanced by adopting the intentional stance and attributing intentions to people, then it seems that the greater the accuracy in attributing beliefs and desires, the greater the predictive power of the theory. The Role of Personality in Building Theories Based on the Intentional Stance Many of the individual difference variables developed in personality research allow for accuracy in the attribution of goals to individuals, which should be the central goal in effectively employing the intentional stance. As the philosopher Fmllesdal states: "When ascribing beliefs, desires and other propositional attitudes to a person on the basis of observation of what he does and says, . . . use all your knowledge about how beliefs and attitudes are formed under the influence of causal factors . . . and in particular your knowledge about his . . . personality traits" (1982/1994, p. 309). Personality theories, be definition, detail the relationship between stable goals that guide and organize an individual's experience and certain types of behavior. Allport, one of the founding fathers of personality research, defined personality as "the dynamic organization within the individual of those psychophysical systems that determine his unique adjustments to his environment" (1935, p. 48). He further defined personality traits as constructs that "initiate" and "guide" behavior. Murray (1938) also conceived of personality in terms of the underlying reasons for behavior, and Stagner (1937) similarly included the concept of "motives-goals" in his theory of personality. From the lay-person's perspective, "personality" describes aspects of an individual that are generally consistent over time. For example, if an individual generally avoided social interaction, it might said that he was shy, or that this was his "personality." Allport, Murray, and Stagner reasoned that overtly consistent behavior must be the product of stable goals. The personality of the "shy" person, for example, might be understood in terms of an underlying goal to focus on private thoughts. Not all personality measures have been developed to assess the kinds of underlying goals that Allport, Murray, and Stagner described. However, by selecting personality variables that do assess goals, researchers can greatly enhance their ability to accurately infer individuals' intentions. In terms of Elster's definition of intentionality, personality variables can assess the beliefs and desires of individuals as well as the actions they are most likely to choose based on those beliefs and desires. An example: Need for Cognition The individual difference variable of Need for Cognition, or NC (Cacioppo & Petty, 1982; Cacioppo, Petty, & Kao, 1984), will be used to describe the way in which personality variables can been incorporated in intentional stance theories. NC measures an individual's motivation to engage in effortful cognitive tasks. People high in NC enjoy carefully thinking through issues, and therefore they take advantage of opportunities to do so. Careful cognitive processing is a goal of people high in NC. People low in NC, on the other hand, have been called "cognitive misers" who do not enjoy effortful cognitive tasks and whose goal is to avoid such tasks (Cacioppo, Petty, Feinstein, & Jarvis, 1996). In terms of Elster's definition of intentionality, the need for cognition variable provides insight into beliefs, desires, and behaviors. People high in NC believe complex cognitive tasks are enjoyable, desire to engage in such tasks, and generally choose to do so. People low in NC, on the other hand, do not believe effortful cognitive tasks are enjoyable, do not desire to engage in these tasks, and so generally avoid such tasks. Knowledge of these particular beliefs and desires can aid researchers in developing mass communication theory. Imagine a case in which a researcher has adopted the intentional stance to persuasion and hypothesizes that an anti-smoking advertisement with strong arguments will be more effective than an anti-smoking message with weak arguments. The researcher might wish to further specify that the effectiveness of advertisements with strong arguments will be greater when people carefully consider the message then when they do not. Scores on NC allow the researcher to attribute the relevant beliefs and desires to each subject. By incorporating NC into the research project, the researcher may express in detail the role of individual intentions: strong arguments would be expected to be much more effective than weak arguments for subjects high in NC, while strong arguments would be expected to be only slightly more effective than weak arguments for subjects low in NC. Low NC subjects are less motivated to carefully process information than high NC subjects, and therefore it is less likely (a) that they will notice whether arguments are strong or weak and (b) that they will be more persuaded by the strong arguments than by the weak arguments. High NC subjects, on the other hand, are more highly motivated to carefully process information. They would be expected to both notice whether arguments are strong and weak and base their attitudes on the strong, rather than weak, arguments. If these hypotheses are supported (see Haughtvedt, Petty & Cacioppo, 1992; Batra & Stayman, 1990), the researcher has evidence to build a theory that accounts for the goals that mediate people's responses to persuasive mass communication messages. People high in need cognition are likely to be more influenced by strong arguments than weak arguments because, in general, they desire to engage in careful processing and believe that this activity will be rewarding. People low in need for cognition are less likely to be influenced by strong arguments than weak arguments, because they are less motivated to engage in careful thinking. This type of theoretical model, which is based on specific, measurable intentions, is likely to account for a larger proportion of variance than models that do not consider intentions. This type of model will also most likely lead to theories that specify, in detail, the intentional processes that underlie persuasion. Need for cognition was used to illustrate how personality variables can be incorporated into communications research, but many other individual difference variables can provide insight into people's intentions. In addition to the motivations measured by NC, researchers examining persuasion and advertising effectiveness have recently theorized about the effects of motivations assessed by the scales of self-monitoring (Snyder & DeBono, 1985; DeBono & Packer, 1991; Shavitt, Lowrey & Han, 1992), visual processing style (Burns, Biswas & Babin, 1993), sociability (Artz, Tybout & Kehret-Ward), self-confidence (Bither & Wright), self-acceptance (Chebat & Picard, 1988), and sex role identity (Jaffe, 1994). Discussion Philosophers of social science have noted that treatment of intentionality separates the social sciences from the natural sciences. While intentionality is not an issue in the natural sciences, it is a construct that is generally central in the social sciences, where research questions generally focus on human behavior. The notion of intentionality captures the processes by which people purposely choose to act on the basis of their beliefs and desires. In mass communication research, some theories have not considered intentionality, while others have emphasized its role in persuasion. Early mass communication theory, or bullet theory, did not take into account audience members' intentions or the differences in their responses to media messages. As a result, bullet theory was unable to satisfactorily predict persuasion effects. Another branch of mass communication theory that does not take intentions into account focuses on subconscious processing. Research on this topic has essentially taken the form of natural science theories applied to the "social" phenomenon of persuasion. Subconscious processing has been described in terms of brain physiology. In this branch of theory, persuasion scholars appear to be correct in not considering intentionality, because the processes they are examining operate below the threshold of awareness required for the intentional, purposive selection of actions. Information processing theory is an area of persuasion research in which the role of intentionality is strongly emphasized. Information processing models emphasize that individuals' goals effect whether they will chose to carefully analyze a message or simply gloss over it. A key component of information processing theory, therefore, is the identification of the goals that might lead people to consider (or not consider) various types of media messages. Personality theory can aid researchers in building theory both by providing a taxonomy of the basic goals that organize human behavior and by providing scales that directly assess individual differences in these goals. Communications scholars and practitioners might ask how measuring differences in personality can be useful in a field in which the goal is usually to influence the attitudes and behaviors of a mass target audience. 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