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(Feb 2006) Thank you. Elliott Parker ====================================================================
Effects of Positive vs. Negative Self-Efficacy Statements in Humorous Anti-Alcohol Abuse Ads
By Myiah Hutchens Hively, MA Student, Washington State University Moon J. Lee, Assistant Professor, Washington State University Yi-Chun "Yvonnes" Chen, Doctoral Student, Washington State University
Edward R. Murrow School of Communication Washington State University PO Box 642520 Pullman, WA 99164 (509) 432-1540 [log in to unmask]
Running head: Self-Efficacy Statements Within Anti-Alcohol Abuse Messages
Abstract This study investigated the effects of self-efficacy statements in different types (positive vs. negative) of taglines in humorous anti-alcohol abuse advertisements based on individuals' sensation seeking tendency. An experiment was conducted with 114 college students. Results indicate that positively reinforced messages consistently demonstrated better results than the negatively reinforced advertisements; however, results were mixed for the effects of self-efficacy statements. Implications, limitations and directions for future research are discussed.
College students' heavy drinking problems have been identified as one of the serious health hazards (Wechsler, Dowdall, Maener, Gledhill-Hoyt, & Lee, 1998), concerning many parents, educators, health campaign practitioners and government officials (Lee & Bichard, in press; Lee & Chen, 2004). In fact, according to a study done by the Washington State Department of Health in 2002, 18 to 24 years old are the most likely age group to abuse alcohol. One study estimates that approximately 40 percent of college students have more than 4 drinks for women and 5 drinks for men in a single sitting (Wechsler, et al., 1998). There have been multiple research efforts to tackle this problem (Skuttle, 1999; Dorsey, Miller & Scherer, 1999; Oei & Burrow, 2000, Hasking & Oei, 2002; Blume, Schmaling & Marlatt, 2003). However, finding effective ways to persuade this group, especially those who are at risk, to change their risky behaviors has turned out to be a major challenge. Previous studies have investigated how to effectively target messages to at-risk individuals (Lee & Ferguson, 2002; Lee et al., 2002; Lee, 2003; Lee et al., 2004; Lee & Hively, unpublished). However, although several types of messages were identified as promising for targeting at-risk individuals, the effort to identify effective messages to achieve the desired results – i.e. an increased intention to modify their drinking behaviors– has only recently shown promise. Lee et al. (2002) found that high risk-takers responded better to humorous messages than messages that utilized fear appeals in anti-tobacco advertisements. A follow up study (Lee, 2003) again found similar results in anti-alcohol abuse messages. However, one of the major challenges for campaign designers is to design messages to reach desired outcomes (i.e. increasing intention to change behavior) and at the same time reduce a possibility of setting off a target audience member's defensive reactions. Research has shown that individuals' self-efficacy, self-beliefs about their ability to control their own behaviors (Bandura, 1994), is negatively correlated with drinking problems (Blume, Schmaling & Marlatt, 2003; Oei & Morawska, 2004; Skuttle, 1999). Furthermore, increasing self-efficacy in alcohol treatment facilities has shown to be successful in reducing drinking problems (Hasking & Oei, 2002). Based on the review of self-efficacy literature, it was suspected that messages containing self-efficacy statements may provide a new way to target this group, particularly individuals at risk. Lee and Hively's (unpublished) study followed an experiment conducted by Lee and Chen (2004) which examined the effects of positive and negative reinforcements within anti-substance abuse ads and determined that heavy drinkers indicated higher levels of interest in the negatively reinforced ads, but higher risk perceptions in the positively reinforced condition. Therefore, in this study, the effects of self-efficacy statements were further investigated within the context of positive and negative reinforcements (e.g. taglines) in humorous anti-alcohol abuse ads. In addition, individuals' sensation seeking tendency, their tendency to seek novel stimuli (Zuckerman, 1994), was considered in terms of their reactions to different types of reinforcements (e.g. taglines) in the ads. An experiment was conducted with 114 college students. It was suspected that sensation seekers would respond to positively reinforced messages (particularly with self-efficacy statements) better than negatively reinforced messages.
Drinking and Sensation Seeking If message designers hope to effectively target messages to high risk individuals, designers need to understand how risk-taker's decision-making processes work. Researchers have concluded that individuals' risk-taking tendencies in addition to their sensation seeking tendencies help to create a clearer picture of how they make decisions (Ferguson et al., 1991; Lee et al., 2002; Moore & Gullone, 1996; Zuckerman, 1979). The notion of the sensation-seeking tendencies was first introduced by Zuckerman in 1964. Zuckerman defined sensation seeking as a personality trait and the focus of sensation seeking is on individual differences in terms of optimal levels of arousal or stimulation (Zuckerman, 1994; Zuckerman, 1979; Zuckerman, Kolin, Price, & Zoob, 1964). Throughout recent revisions, he defined sensation seeking as a "trait defined by the seeking of varied, novel, complex, and intense situations and experiences, and the willingness to take physical, social and financial risks for the sake of such experience" (Zuckerman, 1994, p.27). Sensation seekers, in comparison with non-sensation seekers, are more attracted to novel and intense activities, including engaging in risky behaviors (Zuckerman, 1994, pp. 154-155). The concept of sensation seeking has been widely applied to studies in relation to positive risky behaviors such as climbing, kayaking and scuba diving (e.g., Zuckerman 1983c; Rowland, Franken, & Harrison, 1986), and negative risky behaviors such as substance use and addictive behaviors (e.g., Hansen & Breivik, 2001; Zuckerman, 1994). Among these behavior studies, sensation seeking has consistently shown a high correlation with risk-taking behaviors (Hansen et al., 2001; Zuckerman, 1979, 1994). Zuckerman has further reiterated that high sensation seekers are more likely to engage in substance abuse than low sensation seekers and that sensation-seeking tendencies are highly correlated with smoking, drinking, sexual behavior and drug use (1979). Zuckerman refined his sensation seeking scale through creating four factors; Boredom Susceptibility, Adventure Seeking, Experience Seeking, and Disinhibition. It has been found that two of the factors tend to predict risky behaviors more than the others; Experience Seeking and Disinhibition. In particular, Disinhibition has shown to be the sub-scale with the highest correlation to risk-taking behaviors (Zuckerman, 1994; Pedersen, Clausen, & Lavil, 1988; Schwarz, Burkhart, & Green, 1978). Effective Message Design: Humor Appeals Researchers suggested that effective health campaign efforts should target specific audiences in terms of their individual characteristics (Austin & Meili, 1994; Lee et al., 2002). One such characteristic is an individual's risk-taking tendencies. Risk-taking tendencies have been examined by some researchers as the behavioral counterpart to sensation seeking (Lee et al, 2002). Studies have shown that adolescents have higher risk-taking tendencies than those in younger or older age groups (Ferguson et al., 1991; Lee et al., 2002) An approach that has received some support for effectively targeting risk-takers is using humorous appeals as opposed to fear appeals. Humor appeals have been defined as messages which use humor to gain attention and portray light consequences in order to deter risky behavior (Lee et al., 2004; Lee & Hively, unpublished); whereas fear appeals are defined as persuasive messages which emphasize the harmful physical or social consequences of failing to comply with the messages' recommendations, and are commonly used in health communication PSAs (Hale & Dillard, 1995). Traditionally, humor appeals are more frequently used in promotional messages such as alcohol advertisements rather than in health campaign messages (Monahan, 1995). Humor is found to be effective in drawing attention (Madden & Weinberg, 1984; Monahan, 1995; Weinberger & Gulas, 1992), and gaining attention is often cited as the first step in many behavior changing theories (Austin et al., 1994; Bandura, 2002). A consensus on how effective humor is as a persuasive tool can not be found. Although there is some evidence that humor enhances persuasion (Batra & Ray, 1986; Lee et al, 2002; Lee, 2003; Weinberger et al., 1992), the effects of humor appeals do not seem to last long since humor tends to elicit heuristic information processing rather than thoughtful and elaborated information processing (Monahan, 1995). However, some researchers have posited that this heuristic information processing of humor appeals can be a benefit not a boone because it reduces the threatening feelings presented in the messages and can potentially lead to further information processing (Monahan, 1995; Conway & Dube, 2002). Conway and Dube (2002) determined that humor was an effective way to foster behavior change when dealing with threatening topics. Humor appeals, therefore, can provide a way to reduce a target audience's defensive mechanisms and enhance their susceptibility of a recommended action in health communication messages, which is especially necessary when targeting high-risk individuals (Monahan, 1995; Lee et al., 2002). Recent research determined that risk-takers tend to react negatively to fear appeals, which have been commonly used in anti-substance abuse messages (Lee et al., 2002). In fact, high risk-takers exposed to fear appeal messages often indicate lower intentions to change their risky behaviors if exposed to fear appeals messages (Lee et al., 2002); however, when humor was used to relay the message, the negative correlation between individuals' rebellious tendencies and their intentions to change their behaviors was not present. Lee et al., (2002) speculated that messages which use fear leads to defensive reactions, which hinders further acceptance of a recommended action. They concluded that message designers need to tailor their messages to target this particular public in a manner that diminishes their defensive reactions by looking at how to minimize possible defensive reactions to the given messages. Positive and Negative Reinforcements Lee (2003) found that heavy drinkers who watched the humor ads reported higher levels of intention to change their drinking behaviors than those who watched the fear ads as well as those who were in the control group. A subsequent study examined if heavy drinkers would react more positively to humor messages that were reinforced with positive or negative slogans (Lee et al., 2004). Recent research has shown that individuals tend to remember messages with positive statements more than messages with negative statements (Butler & Berry, 2002). In addition, McGuire (1999) concluded that positive messages lead to greater recall. Positive reinforcement was classified as messages that contained positive verbs such as do, can or be; and negative reinforcement was classified as messages that contained negative verbs such as don't or can't. Lee et al., (2004) determined that heavy drinkers had higher perceptions of the risk associated with alcohol abuse and felt the messages had a higher perceived risk of excessive drinking portrayed in the messages that utilized positive reinforcement. However, heavy drinkers demonstrated a lower level of interest in the advertisements that were positively reinforced and their intent to change their drinking behavior was not influenced by either type of reinforcement; therefore, it appears that humorous, positively reinforced messages tend to be most beneficial for high risk-takers. Self-Efficacy and Drinking Behavior Albert Bandura's Social Cognitive Theory, which includes the concept of self-efficacy, has been widely applied in health research as well as clinical practices. Research has consistently shown that an individuals' self-efficacy can have a direct impact on their drinking behavior (Dorsey, Miller & Scherer, 1999; Blume, Schmaling & Marlatt, 2003). Bandura (1994) defines self-efficacy as "people's beliefs about their capabilities to produce designated levels of performance that exercise influence over events that affect their lives" (p. 71). Many behavior-changing theories utilized in health communication rely on self-efficacy as a crucial element that should be included in the health message (Fishbein & Yzer, 2003; Witte & Allen, 2000). Fishbein and Yzer (2003) propose that combining Janz & Becker's (1984) Health Belief Model, Bandura's (1997) Social Cognitive Theory and Fishbein & Ajzen's (1975) Theory of Reasoned Action leads to the three critical determinates of behavior change; attitudes towards the behavior, norms surrounding the behavior, and self-efficacy. According to Bandura's theory, self-efficacy can have an effect on multiple dimensions of peoples' lives including their health. Bandura (1995, 1997) posits that perceived self-efficacy is an important determinant of people's beliefs in their ability to cope with and their execution of direct control over health-impairing habits such as cigarette smoking, alcohol and drug abuse, and sexually transmitted diseases. Many health researchers have used Bandura's concept to help explain problematic drinking behaviors and how to treat them using clinical, college, and community samples (Oei & Morawsak 2004; Blume, Schmaling & Marlatt 2003; Hasking & Oei 2002; Oei & Burrow 2000; Dorsey, Miller & Scherer 1999; Skuttle 1999; Annis & Davis 1988). Skuttle (1999) discovered that self-efficacy scores were negatively correlated with perceived benefits from drinking and amounts of abuse within a sample obtained from an all-male treatment facility. In other words, the lower self-efficacy scores individuals had, the higher perceived benefits from drinking as well as the higher amounts of abuse they exhibited. Similar results can also be observed when utilizing college students as the experimental sample (Dorsey, Miller & Scherer, 1999; Blume, Schmaling & Marlatt, 2003). It was discovered that the students' self-efficacy had a strong effect on their drinking behaviors, and those with high self-efficacy were less likely to engage in binge-drinking. Oei & Burrow (2000) further examined drinking refusal self-efficacy to assure that drinking refusal self-efficacy was measuring self-efficacy regarding drinking behaviors rather than other types of substance abuses such as smoking or caffeine consumption. Their research once again indicated that self-efficacy was a critical factor in alcohol consumption. Of the four variables they measured; alcohol expectancy, smoking refusal self-efficacy, automatic thoughts and drinking refusal self-efficacy, only drinking refusal self-efficacy was significantly correlated with alcohol consumption. A follow-up study (Oei & Morawsak, 2004) found that self-efficacy was indeed a better predictor than alcohol expectancies for alcohol consumption. Self-efficacy predicted both amount and frequency of consumption while alcohol expectancies only predicted whether or not they would drink at all. Lee et al. (unpublished) examined the effects of self-efficacy within positively reinforced anti-alcohol abuse messages on rebellious individuals and obtained fairly promising results. Results indicated that rebellious individuals in the self-efficacy condition indicated lower alcohol expectancies and higher intentions to change their drinking behavior than individuals in the non-self-efficacy condition. A result that was not expected was that rebellious individuals in the self-efficacy condition indicated lower levels of drinking-refusal self-efficacy than individuals in the non-self-efficacy condition. The researchers propose that the self-efficacy statements lead individual's to further process the message and become more realistic about their own refusal abilities. Hypotheses The purpose of this study was to further investigate the effects of self-efficacy statements in humorous, positively and negatively reinforced anti-alcohol abuse messages based on individuals' sensation seeking tendencies. Based on the existing literature, it was suspected that high sensation seekers would exhibit less defensive reactions to the messages with self-efficacy statements and greater intentions to change their drinking behaviors than to the messages without self-efficacy statements. It was also expected that high sensation seekers in the negative reinforcement condition would react more defensively, thereby indicating less liking and less intention to change their behavior than individuals in the positive condition with no self-efficacy component. H1: High sensation seekers in the positive condition and the positive with self-efficacy condition will indicate higher levels of perceived humor portrayed in the ads than the negative with self-efficacy condition. H2: High sensation seekers in the positive with self-efficacy condition will indicate higher risk perceptions of drinking than high sensation seekers in the positive condition and negative with self-efficacy condition while no differences are expected among low sensation seekers. H3: High sensation seekers in the positive with self-efficacy condition will indicate higher alcohol expectancies than high sensation seekers in the positive condition and negative with self-efficacy condition. H4: High sensation seekers in the negative with self-efficacy condition will indicate lower levels of liking than high sensation seekers in the positive condition and positive with self-efficacy condition. H5: High sensation seekers in the positive with self-efficacy condition will exhibit higher levels of intention to change their drinking behavior than those in the positive condition and those in the negative with self-efficacy condition will exhibit the lowest levels of intention in comparison. Method The purpose of this study was to examine the effects of self-efficacy statements within positively and negatively reinforced anti-substance abuse advertisements on rebellious individuals. The experiment utilized a 2 x 3 post-test only design. The three conditions were positive, positive with self-efficacy, and negative with self-efficacy conditions. A total of 115 college students from a large Northwestern university participated in the study for extra credit in a communication course. Developing the Stimuli Six ads that had been used in a previous study (Lee et al., unpublished) were used. The ads had been previously coded by three trained coders and in analysis of Lee et al.'s (unpublished) study were found to have high perceived levels of humor. The six ads are titled "Slash," "Pit Crew," "Drink Responsibly," "Guys in the Desert," "You Know When to Stop," and "Responsibility Matters." In the positive condition, the ads were not altered at all from how they appeared on television and all included positive reinforcement, meaning they all included statements which utilized positive verbs such as "do" or "can". In the positive with self-efficacy condition a self-efficacy statement was added, and in the negative self-efficacy condition any positive statements in the voice-overs were removed and a negative reinforcement and self-efficacy statement were added. Positive with Self-Efficacy Manipulation The messages used in the positive with self-efficacy condition were manipulated in include a visual self-efficacy statement. The statements were added onto the existing ad instead of on a separate screen so they would appear as realistic as possible. The statements used were as follows: "Only You Control the Situation," "You Can Break The Myth," "Drink Responsibly, You Can Change," "You Can Make a Better Choice," "You Can Make a Difference Too," and "You're in Charge." "Only You Control the Situation" was used in the "You Know When to Stop" ad and was preceded by a graphic which read "Knowing When to Stop is a Good Thing." "You Can Break the Myth" was used with the "Guys in the Desert" ad and was preceded by a graphic which read "Alcohol, it's Not as Cool as You Think." "Drink Responsibly, You Can Change" was used with the "Drink Responsibly" ad and had no other writing with it. "You Can Make a Better Choice" was used with "Slash" and was preceded by a graphic that read "Drink Intelligently." "You Can Make a Difference Too" was used with the "Responsibility Matters" ad and was preceded by a graphic which read "We All Make a Difference." "You're in Charge" was used with the "Pit Crew" ad and was preceded by a graphic which read "Drink Intelligently." Voice-overs in "Drink Responsibly," "Slash," and "Pit Crew" all contained additional responsible drinking messages. Negative with Self-Efficacy Manipulation The same ads were used in the negative with self-efficacy condition, but the responsible drinking voice-overs and graphics were removed and self-efficacy statements and negative reinforcements were added. Negative reinforcement is defined as statements that contain negative verbs such as "don't." As with the positive with self-efficacy condition, the statements and reinforcements were added directly onto the ads so they would appear to be as realistic as possible. "Don't Drink – Only You Control the Situation" was used with "You know When to Stop" which was preceded by a graphic which read "Knowing When to Stop is a Good Thing." "Don't be Fooled – You Can Break The Myth" was used with "Guys in the Desert" which was preceded with a graphic which read "Alcohol, It's Not as Cool as You Think." "Don't Drink Too Much – You Can Change" was used with "Drink Responsibly" and had no other writing with it. "Don't Drink – You Can Make a Better Choice" was used with "Slash" and the "Drink Intelligently" tagline and responsible drinking voice-over was removed. "Don't Be That Guy – You Can Make a Difference" was used with "Responsibility Matters" and was preceded with a graphic that read "We All Make a Difference." "Don't Drink – You're in Charge" was used with "Pit Crew" and the "Drink Intelligently" tagline and drink responsibly voice-over was removed. Experimental Procedure Upon arrival, students were greeted and randomly assigned to one of the conditions. At the beginning of the experiment, the participants were given a survey designed to measure their risk-taking tendencies (Ferguson et al, 1991; Lee et al, 2002), their general self-efficacy (Schwarzer & Fuchs, 1995), and drinking refusal self-efficacy (Young & Oei, 1996). After completing the pretest survey, the participants were asked to watch either the tape with the positive reinforcements which had not been altered, n = 39, the tape with the positive reinforcements and self-efficacy statements, n = 37, or the tape with the negative reinforcements and self-efficacy statements, n = 37. After watching the ads, participants were asked to answer Likert scale questions (on a scale of 0 to 9) regarding their drinking refusal self-efficacy, fear of drinking portrayed in the ads, risk perceptions involved with drinking, alcohol expectancies, liking of the ads, and intention to change their drinking behaviors. Data Analysis Creating the Sensation Seeking Scale Five items from Zuckerman's (1979) Disinhibition sub-scale of sensation seeking which loaded onto one factor was use to measure participant's sensation seeking tendencies. The items included: "I like people who are partiers," "Having alcohol is the key to having a really good party," "I am rebellious," "I like wild parties," and "I'm likely to do drugs when I party." The Cronbach's alpha score for the five items is .76, 52% of variance explained. Participants with sensation seeking factor scores in the top 40 percent of all participants were classified as high sensation seekers and participants in the lowest 40 percent of all participants were classified as low rebellious. Participants with scores in the middle 20 percent were not used in the analysis in order to be able to examine the more extreme cases. Dependant variables Participants were asked several Likert scale (0 to 9) questions to assess participants drinking refusal self-efficacy, fear perceptions, risk perceptions, alcohol expectancies, liking and intention to change their drinking behavior. A factor analysis was conducted and a summed factor score was used to measure each dependant variable. Perceptions of Fear Five items loaded onto one factor was used to measure perceptions of fear in the post test survey. The items included; "These ads made me think a great deal about the dangers of drinking," "These ads scare me about the dangers of drinking," "I found myself feeling very frightened when I watched these ads," "Ads like these truly make me afraid to drink," and "These ads remind me of how risky it is to drink." The Cronbach's alpha score for the five items was .79, with 46% of variance explained. Risk Perceptions Four items loaded onto one factor was used to measure perceptions of risk in the post test survey. The items included; ; "I consider myself to be at risk of becoming an alcoholic," "I drink too much," "I consider myself to be at risk of getting in an automobile accident due to my drinking," and "I consider myself to be at risk of getting alcohol-related injuries." The Cronbach's alpha score for the four items was .72 with 41% of variance explained. Alcohol Expectancies Five items loaded onto one factor was used to measure alcohol expectancies in that post test survey. The items included; "Drinking helps people fit in better in social occasions," "Drinking helps people relax in social occasions," "Drinking makes people relaxed," "People who enjoy drinking are relaxed, easy-going people," and "Drinking makes people happy." The Cronbach's alpha score for the five items was .82 with 49% of variance explained. Liking Five items loaded onto one factor was used to measure liking of the ads in the post test survey. The items included; "I like these ads very much," "These ads are cool," "I can relate myself to the ads," "The portrayals in the ads are possible," and "I had a strong emotional reaction to these ads." The Cronbach's alpha score for these items was .79 with 45% of variance explained. Intention to Change Behavior Four items loaded onto one factor was used to measure intention to change their drinking behavior in the post test survey. The items included; "I drink too much," "People I care about are upset that I drink a lot," "My drinking behavior concerns those who care about me," and "I plan on changing my drinking habits very soon." The Cronbach's alpha score for the four items was .72 with 58% of variance explained.
Drinking Refusal Self-Efficacy Drinking refusal self-efficacy was measured in the pretest through five items from Young & Oei's (1996) drinking refusal self-efficacy scale which was slightly modified by a communication professor and three graduate students. The five items loaded onto one factor and included the items: "I can control how much I drink at a party," "I have control over my drinking behavior," "I can stop drinking whenever I want," "I can control how much I drink more than the average person," and "I can stop drinking even if my friends insist that I drink." The Cronbach's alpha score for the five items is .75, with 40% of variance explained. Results The General linear model was used to test the hypotheses. The participants' drinking refusal self-efficacy scores were statistically controlled through out the hypothesis testing. H1: High sensation seekers in the positive condition and the positive with self-efficacy condition will indicate higher levels of perceived humor portrayed in the ads than the negative with self-efficacy condition. There was a significant condition effect, F (1, 82) = 55.07, p < .01, for perceived humor, regardless of their levels of sensation seeking tendency. Further analysis using simple t-tests confirmed that the participants who were in the positive condition, n = 16, M = .38, S.D. = -.93, as well as the positive with self-efficacy condition, n = 15, M = .31, S.D. = .76, exhibited higher levels of perceived humor than those who were in the negative with self-efficacy condition, n = 13, M = -.28, S.D. = .92, t (27) = 1.9, p < .05. Therefore, this hypothesis was supported. In addition, it was found that the high sensation seekers, n = 44, M = .16, S.D. = .90, perceived humor more than the low sensation seekers, n = 45, M = -.22, S.D. =.98, F(1, 82) = 41.82, p < .01, regardless of the condition. H2: High sensation seekers in the positive with self-efficacy condition will indicate higher risk perceptions of drinking than those high sensation seekers in the positive condition and negative with self-efficacy condition while no differences are expected among low sensation seekers. There was a significant condition effect, F (1, 67) = 18.43, p = .01 for risk perceptions of drinking. A simple t-test indicated a significant condition effect, t (29) = 1.98, p < .05, in that high sensation seekers in the positive condition, n = 15, M = .71, S.D. = .99, indicated higher risk perceptions than high sensation seekers in the positive with self-efficacy condition, n= 16, M = .10, S.D. = .69, which was the opposite of what was predicted. There were no significant t-test results between high sensation seekers in the positive with self-efficacy condition and the negative with self-efficacy condition, t (26) = -1.06, p = .15. Simple t-test results indicate that there was no significant difference between low sensation seekers in the positive condition and the negative with self-efficacy condition, t (17) = .63, p = .27, or the positive with self-efficacy condition and the negative with self-efficacy condition, t (23) = -.93, p = .18, or the positive condition and the positive with self-efficacy condition, t (18) = 1.52, p = .07. Therefore this hypothesis was partially supported. Again, it was found that the high sensation seekers, n = 42, M = .44, S.D. = .91, perceived more risks of drinking than the low sensation seekers, n = 32, M = -.30, S.D. = .63, F(1, 67) = 82.36, p < .01, regardless of the condition. -- Insert Figure 1 Here -- H3: High sensation seekers in the positive with self-efficacy condition will indicate higher alcohol expectancies than high sensation seekers in the positive condition and negative with self-efficacy condition. There was no significant condition effect, F(1, 83) = .65, p = .30 for alcohol expectancies, therefore this hypothesis was not supported; however there was a significant sensation seeking effect, F (1, 83) = 24.51, p < .05. Further analysis using simple t-tests revealed a significant difference between high and low sensation seekers, t (89) = -4.70, p < .01. Results indicate that high sensation seekers, n = 46, M = .44, S.D. = .75, indicated higher alcohol expectancies than low sensation seekers, n = 45, M = -.43, S.D. = 1.00. H4: High sensation seekers in the negative with self-efficacy condition will indicate lower levels of liking than high sensation seekers in the positive condition and positive with self-efficacy condition. There was not a significant condition effect, F(1, 80) = 4.86, p = .14, for liking of the ads, therefore this hypothesis was not supported; however, post hoc analysis revealed a significant , p < .05, difference between the high sensation seekers in the positive with self-efficacy condition, n = 15, M = .30, S.D. = .94, and high sensation seekers in the negative with self-efficacy condition, n = 13, M = -.43, S.D. = .97. No significant sensation seeking effect was found, F (1,80) = .95, p = .42. H5: High sensation seekers in the positive with self-efficacy condition will exhibit higher levels of intention to change their drinking behavior than those in the positive condition and those in the negative with self-efficacy condition will exhibit the lowest levels of intention in comparison. There was a significant condition effect, F (1, 67) = 15.32, p < .05 for intention to change their drinking behavior. However it should be noted that a simple t-test indicated a near significant condition effect, t (25) = 1.41, p = .08 between high sensation seekers in the positive condition, n = 15, M = .61, S.D. = .99, and high sensation seekers in the negative with self-efficacy condition, n = 12, M = .03, S.D. = 1.13. T-test results between low sensation seekers in the positive condition, n = 7, M =.06, S.D. = .78, and the low sensation seekers in the positive with self-efficacy condition, n = 13, M = -.49, S.D. = .57, indicated significant differences, t (18) = 1.80, p <.05. There were also significant differences, t (17) = 2.91, p = .01, between low sensation seekers in the positive condition, n = 15, M = .61, S.D. = .99, and low sensation seekers in the negative with self-efficacy condition, n = 12, M = -.73, S.D. = .41. Therefore this hypothesis was partially supported. --Insert Figure 2 Here -- Discussion This study examined the effects of self-efficacy statements within positively and negatively reinforced humorous anti-abuse messages, and results show that manipulating self-efficacy statements within the taglines in the ads influence how individuals processes humorous anti-alcohol abuse messages. The most consistent result appeared to be the participants' preference for the positively reinforced messages as opposed to the negatively reinforced messages. The participants perceived the positively reinforced messages with or without the self-efficacy statements more humorous than the negatively reinforced messages with self-efficacy statements. However, the participants who watched the positively reinforced self-efficacy ads perceived risk associated with drinking less than those who watched the negatively reinforced self-efficacy messages or those who watched the positively reinforced messages without the self-efficacy statements while liking the positively reinforced messages with the self-efficacy statements more than the negatively reinforced self-efficacy messages. In fact, the participants who watched the positively reinforced messages without the self-efficacy statements exhibited higher levels of intention to change their behaviors than those who watched the other two types. In addition, the high sensation seekers were more likely to like the ad messages, perceived risk associated with drinking, had higher alcohol expectancy, and higher intention to change behavior than the low sensation seekers. The findings suggest that message designers need to focus on the use of positive reinforcements in humorous anti-alcohol abuse messages when trying to reach college students, particularly high sensation seekers. This may be because sensation seekers tend to respond better to positive stimuli than negative stimuli in that the negative reinforcements such as "Don't' drink" or "Don't be stupid" may trigger their defensive reactions. However, the original assumption, based on the finding from Lee & Hively (2004), that the self-efficacy statements in the positively reinforced messages would exhibit significant advantages over the positively reinforced messages without the self-efficacy statements was not supported in this study and that fact calls for further research in the area. There are, however, several limitations that should be considered with caution. First of all, the results of this study are based only on short-term effects of the message manipulations in that the findings should not be considered as long-term effects of the media exposure. Therefore, a follow-up study which examines participants' responses after a set period of time (e.g. a week later), may provide useful insights in terms of possible residual effects of different types of reinforcements in humorous anti-alcohol abuse media messages. Another possible limitation is related to the artificial assignment of participants to high and low sensation seeking tendency. Because this study was conducted with college students, it is difficult to generalize the results of this study to the general public because the participants were relatively categorized as high and low based on this sample. However, several significant findings regarding sensation seeking tendency address this concern and indicate that sensation seeking tendency is indeed a useful construct to identify risk-takers. However, the fact that no interaction effects were found in this study indicates that individuals' sensation seeking tendency itself is not sufficient to understand how risk-takers interpret messages differently in comparison with non-risk-takers. Lee and Ferguson (2002) argued that individuals' different types of risk-taking behaviors should be considered when designing messages since different types of risk-taking tendency influence how they perceive different media messages. In particular, individuals' rebellious risk-taking tendency, tendency to rebel against perceived intents or norms (Ferguson, et al., 1991), was found to be useful in terms of understanding this target group's psychology (Lee, et al., 2002; Lee & Chen, 2004; Lee & Shannon, in press) and information processing. Future study in this avenue may present fruitful insights on how to design messages effectively targeting highly rebellious risk-takers. In conclusion, positive reinforcements (in taglines) in humorous anti-alcohol abuse ads appear to be more effective in convincing sensation seekers to think of their risk-taking behaviors and increase the susceptibility of recommended actions in media messages than negative reinforcements. However, efforts to identify effective ways to design messages targeting this audience should continue. Such efforts will lead us to more effective ways to communicate with young adults, particularly for the promotion of a healthier lifestyle. References Annis, H.M., & Davis, C. S. (1988). Assessment of expectancies. In D.M. Donovan & G.A. Marlatt (Eds.). Assessment of addictive behaviors. (pp. 84-111). New York, NY, US: Guilford Press. Austin, E. W., & Meili, H. K. (1994). Effects of interpretations of televised alcohol portrayals on children's alcohol beliefs. 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Figure 1 Risk perceptions by condition and sensation seeking
Figure 2 Intention to change behavior by condition and sensation seeking
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