Knowledge and the Prediction of Behavior: The Role of Information Accuracy in the Theory of Planned Behavior

The usefulness of a combined protection motivation and self-efficacy theory as a model of health enhancement was investigated via a persuasive communications paradigm. Self-efficacy expectancy, outcome expectancy (i.e., perceived response efficacy) and outcome value (i.e., perceived social value) of a health-enhancing behavior were manipulated. As predicted, both self-efficacy expectancy and response efficacy had significant main effects on subjects' intentions to perform the health-enhancing behavior. Outcome value had no significant effect on behavioral intentions. Correlational data indicated that response efficacy was the best single predictor of intentions and that self-efficacy expectancy was also a significant predictor of intentions. Outcome value added no predictability. These results support the utility of the combined protection motivation and self-efficacy theory as a model of health enhancement.     

The Dimensional Structure of the Perceived Behavioral Control Construct1

Following concerns in the literature about the conceptualization and operationalization of the perceived behavioral control (PBC) construct within the Theory of planned behavior (Ajzen, 1985, 1991). 2 studies were conducted to examine whether questionnaire items explicitly assessing perceived difficulty and perceived control issues would attract a different pattern of responses. In applications of the theory of planned behavior to the reduction of red meat consumption and the reduction of potato chip (French fries) consumption, Principal Components Analysis showed that items reflecting perceived difficulty and items reflecting perceived control loaded onto different components. Furthermore, measures of perceived difficulty and not measures of perceived control contributed independent predictive effects in multiple regressions of respondents' behavioral intentions to make the dietary changes.     

The Process by Which Relative Autonomous Motivation Affects Intentional Behavior: Comparing Effects Across Dieting and Exercise Behaviors

A motivational model integrating self-deter-mination theory and the theory of planned behavior was tested in two samples for exercise and dieting behavior respectively. Relative autonomous motivation from self-determination theory was hypothesized to predict intentions to exercise or diet via the mediation of attitudes and perceived behavioral control (PBC) from the theory of planned behavior. It was also expected that attitudes and PBC would predict actual levels of exercise and dieting behavior via the mediation of intentions. Relations in the proposed model were expected to be invariant across the behaviors. Two samples of participants (N = 511) completed measures of the autonomous motives, attitudes, subjective norms, PBC, and intentions with respect to exercise and dieting behavior. Four weeks later, participants self-reported their behavior. Structural equation models supported the replicability of the proposed model in both behaviors. Findings supported the majority of the hypothesized effects in the proposed model across the two health behaviors. However, four effects were significantly different across the two behaviors: the effect of autonomous motives on intentions, subjective norms and PBC on intentions, and intentions on behavior. Findings extend knowledge of the processes by which psychological antecedents from the theories affect health behaviors integral to the maintenance of energy balance.

Determinants of College Women's Intentions to Tell Their Partners to Use Condoms1

In assessing college women's intentions to tell their partners to use condoms every time they have sexual intercourse, the present study examined the applicability of the theory of reasoned action (TORA, Fishbein & Ajzen, 1975), and the additional prediction contributed by Ajzen's (1985) perceived behavioral control and Triandis’(1977) emotional reaction variables. Three hundred and twelve female college students completed a questionnaire designed to measure the aforementioned constructs. Consistent with TORA, the results suggested that these women's intentions were significantly predicted from attitudes and subjective norms. Regarding the effects of the two additional variables, only emotional reaction increased the prediction of intentions beyond that explained by TORA, whereas perceived behavioral control did not improve the prediction. Both conceptual and applied implications of these findings for health interventions to increase condom use were discussed.     

Antecedents of children's physical activity intentions and behaviour: Predictive validity and longitudinal effects

Abstract

This study examined the predictive validity and time-lagged relationships in a model of children's physical activity intentions, attitudes, perceived behavioural control (PBC), behaviour and past behaviour using the Theory of Planned Behaviour (TPB; Ajzen, 1985) as a framework. In Study 1, 386 children aged 12–14 years completed measures of intentions, attitudes, subjective norm, PBC and past behaviour. Their physical activity behaviour was assessed one week later. Structural equation analyses supported the construct and predictive validity of the TPB with the exception of subjective norms which did not predict intentions. In Study 2,70 children completed measures of their physical activity attitudes, intentions, PBC and past behaviour. Attitudes, intentions, PBC and recent behaviour were re-assessed five weeks later. The cognitions demonstrated a moderate degree of stability over time and there were some cross-lagged effects between attitudes and PBC. Past behaviour demonstrated additive rather than attenuating effects. These results support the use of the TPB cognitions and past behaviour as a framework to examine children's physical activity behaviour.     

Issue Salience, Perceived Efficacy and Perceived Risk: A Study of the Origins of Anti-Nuclear War Activity

One hundred eleven college students participated in this two-session experiment designed to explore the origins of anti-nuclear war activism. In Session 1 participants completed questionnaires assessing a number of background characteristics and attitudes, the most important of which for this study's purpose was a measure of perceived political efficacy in the nuclear realm. One week later both the salience of the nuclear weapons issue and participants' sense of personalized risk were experimentally manipulated in a 2 × 2 × 2 (salience × risk × measured efficacy) design. Dependent measures were a behavioral intentions questionnaire and an actual opportunity to sign a petition which participants did not recognize as part of the experiment. High salience significantly increased both anti-nuclear war behavioral intentions and actual behavior as predicted. Individuals who felt highly efficacious were also significantly more likely to take action than others as predicted. A similar relation between efficacy and behavioral intentions was not found, although a salience by efficacy interaction was. Personalized risk influenced only behavioral intentions. Finally, the relative impact of these three variables and of other background and attitudinal variables measured in the first session was explored using regression techniques.     

Studying, Practicing, and Mastering: A Test of the Model of Goal-Directed Behavior (MGB) in the Software Learning Domain

The present study tested the model of goal-directed behavior (MGB). The model proposes that behavioral intentions to perform instrumental behaviors are primarily motivated by desires to perform the acts. In turn, desires mediate the effects of attitudes, subjective norms, perceived control, and anticipated emotions on intentions. Construct validity for MGB variables is assessed, and the predictive utility of the MGB is compared with that of the theory of planned behavior (TPB). College students ( N = 102) provided measures for MGB and TPB variables while participating in a training program to use statistical software. We focused on two goal-related instrumental behaviors: studying handbooks and practicing with the package. The results show that the MGB accounts for a greater proportion of variance in intentions and instrumental behaviors than does TPB. Although desires mediate most of the effects of other predictors on intentions to perform the instrumental behaviors, it is proposed that when the behavior is normatively relevant, or when self-efficacy appraisals play a major role, subjective norms and perceived behavioral control may directly affect intentions.     

Adolescents’Motivations for Viewing Graphic Horror

This study identifies four motivations adolescents report for viewing graphic horror films: gore watching, thrill watching, independent watching, and problem watching. On the basis of a uses and gratifications model of media effects, it is argued that viewing motivations are predictors of responses to graphic horror. This study also seeks to extend Zillmann's excitation-transfer model of media effects to predict under what conditions viewing-generated arousal is transferred to positive or negative affect. The dispositional characteristics of fearfulness, empathy, and sensation seeking are found to be related to different viewing motivations, providing a viewing-related personality profile for the four different types of adolescent viewers. The four viewing motivations are found to be related to viewers’cognitive and affective responses to horror films, as well as viewers’tendency to identify with either the killers or victims in these films. Directions for future research addressing the role of viewing motivations in the relationship between violent media, cognitive and affective responses, and subsequent behavioral aggression are discussed.     

Ethical Intentions and the Theories of Reasoned Action and Planned Behavior1

This study compares the explanatory power of Fishbein and Ajzen's (1991) theory of reasoned action, Ajzen's (1975) theory of planned behavior, and a modified version of the theory of planned behavior, which includes a measure of moral obligation, to predict insurance agents' e]thical intentions toward their clients. Two hundred and forty-five insurance agents in the U.S. were sent surveys, and with 59% of them responding, results suggest that the modified version of the theory of planned behavior best explains agents' e]thical intentions. Theoretical considerations and suggestions for future research, highlighting the perceived behavioral control and moral obligation constructs, are provided.     

Extending Technology Acceptance Model to the E‐recruitment Context in Iran

Using a sample of 332 job applicants in Iran, this study integrates Technology Acceptance Model (TAM) and signaling theory to explain factors influencing applicants' behavioral intentions to apply for jobs online. Of the two main constructs of TAM, perceived usefulness was found to have a significant impact on applicants' behavioral intentions, while perceived ease of use was not. Based on the signaling theory, impression of the organizational website appeared to create interests in organization as a potential employer; hence, prompt applicants to apply for jobs. These results extend our understanding of the online recruitment in different context and provide further insights with regard to possible effects of website features on applicants' attractions toward organizations operating in Iran.     

The Influence of Chronically Accessible Autonomous and Controlling Motives on Physical Activity Within an Extended Theory of Planned Behavior

An extended theory of planned behavior ( Ajzen, 1991 ), incorporating the post‐decisional phase of behavior and constructs from self‐determination theory ( Deci & Ryan, 1985 ), was tested for physical activity using a prospective survey design. Participants (N = 172) completed measures of intentions, attitudes, subjective norms, perceived behavioral control (PBC), self‐determined motivation, continuation intentions, and chronically accessible physical activity motives. Participants completed a self‐report measure of physical activity 3 weeks later. Path analysis supported the predictive utility of the proposed model. Importantly, the effect of continuation intentions of success on physical activity behavior was moderated by chronically accessible physical activity motives. Findings underscore the importance of taking into account continuation intentions, self‐determined motivation, and individuals' chronically accessible motives when developing physical‐activity‐promoting interventions.     

From psychological need satisfaction to intentional behavior: testing a motivational sequence in two behavioral contexts

The present study tested a motivational sequence in which global-level psychological need satisfaction from self-determination theory influenced intentions and behavior directly and indirectly through contextual-level motivation and situational-level decision-making constructs from the theory of planned behavior. Two samples of university students (N = 511) completed measures of global-level psychological need satisfaction, contextual-level autonomous motivation, and situational-level attitudes, subjective norms, perceived behavioral control, intentions, and behavior in two behavioral contexts: exercise and dieting. A structural equation model supported the proposed sequence in both samples. The indirect effect was present for exercise behavior, whereas both direct and indirect effects were found for dieting behavior. Findings independently supported the component theories and provided a comprehensive integrated explanation of volitional behavior.     

Predicting Mothers' Intentions to Limit Frequency of Infants' Sugar Intake: Testing the Theory of Planned Behavior1

This study examines the ability of the Theory of Planned Behavior to account for mothers' intentions to limit the frequency of their infants' sugar consumption. One group of mothers (experimental) was exposed to a dental health education program designed to promote this behavior, the other (control) group was not. Each group of mothers was interviewed twice; the intervention was delivered to mothers in the experimental group immediately after their first interview. The interviews incorporated measures of the key constructs in the Theory of Planned Behavior (attitudes to behavior, subjective norms, perceived behavioral control, and behavioral intentions). Results indicated that the addition of perceived behavioral control resulted in small but significant increments in the amount of explained variance in intentions, thereby supporting the theory. Although the change in intentions to perform the advocated behavior was not significantly greater in the experimental group than in the control group, there was a significant change in attitudes to the behavior in the experimental group but no such change in the control group. Moreover, amount of change in behavioral intentions was significantly correlated with amount of change in attitudes, but not with amount of change in subjective norms or perceived behavioral control. Analysis of behavioral beliefs indicated that the attitude change reflected a change in a specific behavioral belief that was targeted in the intervention. Further analyses focused on the role played by direct experience of the behavior and show that such experience tended to enhance the role of perceived behavioral control in intention formation, apparently because mothers who have older children have discovered that they have relatively little control over frequency of child's sugar consumption. The implication of these results for the Theory of Planned Behavior are discussed.     

Fallout From The Day After. The Impact of a TV Film on Attitudes Related to Nuclear War1

A household survey utilizing a quasi-experimental design was undertaken to assess the impact of the TV movie. The Day After, on a number of psychologically and politically important variables such as the salience of the issue of nuclear war and individuals' beliefs about the efficacy of their own political actions in helping to prevent such a war. Respondents were initially surveyed 2 weeks prior to the movie's airing and were resurveyed afterwards. Contrary to the impression conveyed by reports of a number of public opinion polls, which focussed on attitudes toward government policies, we found that The Day After and the surrounding controversy had a substantial impact on many dimensions including the salience of nuclear war, feelings of personal efficacy, affect related to the idea of a nuclear war, intentions to engage in anti-nuclear behavior, estimates of the probability that a nuclear war would occur, and beliefs about the likelihood and desirability of survival. Two general conclusions emerged. First, many of the effects occurred for the entire sample rather than only for those who watched the film, suggesting that the widely publicized controversy that surrounded the movie contributed to its impact. Second, reactions appeared to be depressive in nature. Compared to the pre-airing responses, the post-airing survey found more passive affective reactions to the idea of nuclear war, decreased estimates of the chances of survival, a decreased desire to survive, and a decreased sense of personal efficiacy. Nonetheless, respondents, especially those who watched The Day After, were more likely to intend to engage in antinuclear war activities after the film than before.     

Prediction of goal-directed behavior: Attitudes,intentions, and perceived behavioral control

A proposed theory of planned behavior, an extension of Ajzen and Fishbein's (1980, Understanding attitudes and predicting social behavior. Englewood-Cliffs, NJ: Prentice-Hall) theory of reasoned action, was tested in two experiments. The extended theory incorporates perceived control over behavioral achievement as a determinant of intention (Version 1) as well as behavior (Version 2). In Experiment 1, college students' attendance of class lectures was recorded over a 6-week period; in Experiment 2, the behavioral goal was getting an “A” in a course. Attitudes, subjective norms, perceived behavioral control, and intentions were assessed halfway through the period of observation in the first experiment, and at two points in time in the second experiment. The results were evaluated by means of hierarchical regression analyses. As expected, the theory of planned behavior permitted more accurate prediction of intentions and goal attainment than did the theory of reasoned action. In both experiments, perceived behavioral control added significantly to the prediction of intentions. Its contribution to the prediction of behavior was significant in the second wave of Experiment 2, at which time the students' perceptions of behavioral control had become quite accurate. Contrary to expectations, there was little evidence for interactions between perceived behavioral control and the theory's other independent variables.     

Predictors of Young People's Charitable Intentions to Donate Money: An Extended Theory of Planned Behavior Perspective

An extended theory of planned behavior (TPB) was used to predict young people's intentions to donate money to charities in the future. Students (N = 210; 18–24 years) completed a questionnaire assessing their attitude, subjective norm, perceived behavioral control (PBC), moral obligation, past behavior, and intentions toward donating money. Regression analyses revealed that the extended TPB explained 61% of the variance in intentions to donate money. Attitude, PBC, moral norm, and past behavior predicted intentions, representing future targets for charitable‐giving interventions.     

Expressing Emotions as Evidence in Osteoporosis Narratives: Effects on Message Processing and Intentions

This study examined the use of different narratives expressing positive or negative emotions, and varying the narrator's perspective on the arousal of discrete emotions, dominant cognitions, perceived evidence quality, and perceived message effectiveness related to osteoporosis behavioral intentions. Formative research led to the creation of narratives and selection of positive and negative emotions expressed. A 4 × 3 between‐subjects posttest design revealed positive relationships between judgments of evidence quality and perceptions of message effectiveness for predicting behavioral intentions toward osteoporosis prevention. In addition, arousing the emotions of fear and/or hope cued processing of osteoporosis narratives. The theoretical implications of these findings for the use of narratives as evidence and the application of findings for osteoporosis health messages are discussed.     

Investigating the predictive validity of implicit and explicit measures of motivation on condom use,physical activity and healthy eating

The literature on health-related behaviours and motivation is replete with research involving explicit processes and their relations with intentions and behaviour. Recently, interest has been focused on the impact of implicit processes and measures on health-related behaviours. Dual-systems models have been proposed to provide a framework for understanding the effects of explicit or deliberative and implicit or impulsive processes on health behaviours. Informed by a dual-systems approach and self-determination theory, the aim of this study was to test the effects of implicit and explicit motivation on three health-related behaviours in a sample of undergraduate students (N?=?162). Implicit motives were hypothesised to predict behaviour independent of intentions while explicit motives would be mediated by intentions. Regression analyses indicated that implicit motivation predicted physical activity behaviour only. Across all behaviours, intention mediated the effects of explicit motivational variables from self-determination theory. This study provides limited support for dual-systems models and the role of implicit motivation in the prediction of health-related behaviour. Suggestions for future research into the role of implicit processes in motivation are outlined.     

Social Cognitions and Past Behavior as Predictors of Behavioral Intentions Related to Cardiovascular Health

The present study assessed the usefulness of social cognitions shared by several health behavior models for predicting behavioral intentions regarding cardiovascular health, independent of past/current behavior. Over 800 adolescents were administered a cross-sectional survey measuring intentions (regarding cigarette use, fat consumption, physical exercise), social cognitions (severity, vulnerability, benefits, self-efficacy), and past/current behavior. Hierarchical regression analyses, controlling for past/current behavior, showed a varied predictive profile across behavioral intentions. Severity estimates predicted intended cigarette use and fat consumption, while perceived benefits predicted intended physical activity. However, self-efficacy predicted intentions consistently. Collectively, social cognitions contributed an additional 0.8%, 2.5%, and 11. 6%, of the variance in smoking, dietary fat, and exercise intentions, over and above past/current behavior. Theoretical and practical implications are considered.