Numerous theories in social and health psychology assume that intentions cause behaviors. However, most tests of the intention- behavior relation involve correlational studies that preclude causal inferences. In order to determine whether changes in behavioral intention engender behavior change, participants should be assigned randomly to a treatment that significantly increases the strength of respective intentions relative to a control condition, and differences in subsequent behavior should be compared. The present research obtained 47 experimental tests of intention-behavior relations that satisfied these criteria. Meta-analysis showed that a medium-to-large change in intention (d = 0.66) leads to a small-to-medium change in behavior (d = 0.36). The review also identified several conceptual factors, methodological features, and intervention characteristics that moderate intention-behavior consistency.

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Does changing behavioral intentions engender behavior change? A meta-analysis of the experimental evidence.

The Scope of Body Image Disturbance - the Big Picture An Overview of Assessment and Treatment Strategies Sociocultural Theory - the Media and Society Social Comparison Processes Appearance-Related Feedback Interpersonal Factors Peers, Parents and Perfect Strangers Feminist Perspectives Sexual Abuse and Sexual Harassment Behavioural Aspects of Disturbance - Conditioning, Context and Avoidance Cognitive Processing Models Future Directions - Integrative Theories, Multidimensional Assessment and Multicomponent Interventions

Exacting Beauty: Theory, Assessment, and Treatment of Body Image Disturbance

In this study, 306 individuals in 3 age groups--adolescents (13-16), youths (18-22), and adults (24 and older)--completed 2 questionnaire measures assessing risk preference and risky decision making, and 1 behavioral task measuring risk taking. Participants in each age group were randomly assigned to complete the measures either alone or with 2 same-aged peers. Analyses indicated that (a) risk taking and risky decision making decreased with age; (b) participants took more risks, focused more on the benefits than the costs of risky behavior, and made riskier decisions when in peer groups than alone; and (c) peer effects on risk taking and risky decision making were stronger among adolescents and youths than adults. These findings support the idea that adolescents are more inclined toward risky behavior and risky decision making than are adults and that peer influence plays an important role in explaining risky behavior during adolescence.

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Peer influence on risk taking, risk preference, and risky decision making in adolescence and adulthood: an experimental study.

Objective
The effect of experimental manipulations of the thin beauty ideal, as portrayed in the mass media, on female body image was evaluated using meta-analysis.

Method
Data from 25 studies (43 effect sizes) were used to examine the main effect of mass media images of the slender ideal, as well as the moderating effects of pre-existing body image problems, the age of the participants, the number of stimulus presentations, and the type of research design.

Results
Body image was significantly more negative after viewing thin media images than after viewing images of either average size models, plus size models, or inanimate objects. This effect was stronger for between-subjects designs, participants less than 19 years of age, and for participants who are vulnerable to activation of a thinness schema.

Conclusion
Results support the sociocultural perspective that mass media promulgate a slender ideal that elicits body dissatisfaction. Implications for prevention and research on social comparison processes are considered. © 2002 by John Wiley & Sons, Inc. Int J Eat Disord 31: 1–16, 2002.

The effect of experimental presentation of thin media images on body satisfaction: a meta-analytic review.

Research suggests that exposure to mass media depicting the thin-ideal body may be linked to body image disturbance in women. This meta-analysis examined experimental and correlational studies testing the links between media exposure to women's body dissatisfaction, internalization of the thin ideal, and eating behaviors and beliefs with a sample of 77 studies that yielded 141 effect sizes. The mean effect sizes were small to moderate (ds = -.28, -.39, and -.30, respectively). Effects for some outcome variables were moderated by publication year and study design. The findings support the notion that exposure to media images depicting the thin-ideal body is related to body image concerns for women.

The role of the media in body image concerns among women: A meta-analysis of experimental and correlational studies.

Research consistently demonstrates the active use of cell phones, whether talking or texting, to be distracting and contributes to diminished performance when multitasking (eg, distracted driving or walking) Recent research also has indicated that simply the presence of a cell phone and what it might represent (ie, social connections, broader social network, etc) can be similarly distracting and have negative consequences in a social interaction Results of two studies reported here provide further evidence that the “mere presence” of a cell phone may be sufficiently distracting to produce diminished attention and deficits in task-performance, especially for tasks with greater attentional and cognitive demands The implications for such an unintended negative consequence may be quite wide-ranging (eg, productivity in school and the work place)

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The Mere Presence of a Cell Phone May be Distracting

Three studies examined the impact of a physical attractiveness contrast effect on self-evaluations. Self-ratings of attractiveness by men and women exposed to highly attractive same-sex stimulus persons (negative contrast) were lower than those of peons not so exposed; attractiveness self-ratings were enhanced by exposure to unattractive stimulus persons (positive contrast). Global self-esteem was not influenced by a negative contrast effect; however, an adverse affect was observed on a more specific assessment of social self-esteem based on interpersonal competence. Corresponding increases in public self-consciousness occurred. 77e positive contrast effect was associated with marginally increased social self-esteem but not with heightened public self-consciousness. The potential role of public self-consciousness in mediating the attractiveness contrast effect is considered

Physical Attractiveness Contrast Effect: Implications for Self-Esteem and Evaluations of the Social Self

This study focused on assessing the concurrent validity of Horney's ideas about the personalities of hypercompetitive individuals based on her theory of neurosis. One hundred and sixty university men and women provided data by responding to a test battery of personality inventories containing measures of hypercompetitive attitudes and several theoretically relevant constructs. The results strongly support Horney's contentions. Stepwise multiple regression analysis indicated that hypercompetitive individuals were high in narcissism, Type E orientation, and several aspects of sensation seeking. The discussion centered on hypercompetitiveness as a mental health problem in American society and on the scale's utility in the diagnosis of the problem and in the assessment of therapeutic change in clients.

Personality Correlates of the Hypercompetitive Attitude Scale: Validity Tests of Horney's Theory of Neurosis

Three studies examined the relative influence of two social-cognitive processes, risk perception and prototype perception, on the willingness of young adults to engage in unprotected sex. In the first two studies, despite participants' expressed intentions to engage in protected sex, perceived risk and prototype perception processes were independently predictive of their willingness to engage in unprotected sex. In a third study, prototype perception and risk perception independently predicted willingness to engage in unprotected sex, which, in turn, predicted actual contraceptive behavior 6 months later. Although the two constructs have some commonality reflecting a social comparison basis, results from all three studies suggest that they embody some unique or independent processes that can be differentially elicited. Theoretical and practical implications of the results are considered.

Risk Perception and Prototype Perception: Independent Processes Predicting Risk Behavior

Adherence to an attractiveness ideal was considered as a possible mediator of a physique contrast effect among Caucasian women. Following exposure to photographs of models typifying idealized thin physiques, women displayed decreased self-esteem and increased self-consciousness, social physique anxiety, and body dissatisfaction. Although women with low adherence to an attractiveness ideal seemed to be advantaged by having greater self-esteem, less self-consciousness, and lower physique anxiety or dissatisfaction than their high adherence counterparts, these women did not display any unique resistance to the contrast effect. High affirmation of an attractiveness ideal was associated with exceptionally high potential for disordered eating. Eating disorder potential did not show influence of the contrast effect, but long-term implications were considered.

Bill Thornton

Papers

The Mere Presence of a Cell Phone May be Distracting

Physical Attractiveness Contrast Effect: Implications for Self-Esteem and Evaluations of the Social Self

Personality Correlates of the Hypercompetitive Attitude Scale: Validity Tests of Horney's Theory of Neurosis

Risk Perception and Prototype Perception: Independent Processes Predicting Risk Behavior

Physique Contrast Effect: Adverse Impact of Idealized Body Images for Women