The role of moral norms as a determinant of intentions to engage in bystander intervention to prevent sexual assault.

Bystander interventions (BIs) primarily focus on increasing a sense of community and responsibility among students. This study examined moral norms as a determinant of intentions towards BI, within the Theory of Planned Behavior (TPB). College students at two universities (n = 291) completed an online survey measuring TPB constructs (e.g., intentions, perceived norms) and moral norms. Results indicated that moral norms were significantly associated with intentions toward BI, and appeared to be a valuable addition to the overall perceived norms construct. In addition, the law, parents, peers, and religion were identified as significant determinants of moral norms. Promoting collective responsibility to engage in BI and including a moral imperative to act in message development could increase the impact of BI.

The Causal Influence of Perceived Social Norms on Intimate Partner Violence Perpetration: Converging Cross-Sectional, Longitudinal, and Experimental Support for a Social Disinhibition Model.

Across three studies, we develop a model of the direct and indirect paths through which the perceived prevalence (perceived descriptive norms [PDN]) of intimate partner violence (IPV) among peers may influence individuals' likelihood of engaging in IPV. Study 1 replicated and extended previous cross-sectional research by demonstrating a positive longitudinal association between PDN and subsequent IPV perpetration. Study 2 further showed the influence of PDN on IPV perpetration to be mediated through its relation to perceived peer acceptance of IPV (perceived injunctive norms [PIN]), which in turn predicted personal IPV acceptance. Study 3 built on this model using an experimental paradigm to show that increasing PDN leads to corresponding increases in PIN and, in turn, personal IPV acceptance, which both predicted IPV perpetration. Furthermore, the effects of PIN on personal IPV acceptance and IPV propensity were strongest for dominance-oriented individuals. Results bear important implications for social norms-based interventions for IPV.

Social Norms for Intimate Partner Violence: A Replication With College Students.

This study replicated prior research on college students' perceived descriptive norms (i.e., prevalence estimates) for intimate partner violence (IPV). In this study, male and female college students were instructed to estimate the prevalence of physical forms of IPV for "typical students" of their same gender on campus. Perpetrators of IPV-both male and female-made higher estimates than nonperpetrators. When compared to actual prevalence rates, both perpetrators and nonperpetrators overestimated the prevalence of IPV on campus. Findings have implications for prevention programs that address social norms.

"Drunkorexia": Understanding eating and physical activity behaviors of weight conscious drinkers in a sample of college students.

OBJECTIVE: Behaviors of weight conscious drinkers (BWCD) include disordered eating, excessive physical activity (PA), and heavy episodic drinking. Considering that approximately 25% of the college students report BWCD, it is important to investigate what characteristics increase the likelihood of college students engaged in BWCD for both moderate and vigorous PAs. PARTICIPANTS: A total of 510 college students were recruited from a large, public southeastern university. METHODS: Participants completed a cross-sectional survey during the spring 2015 semester. RESULTS: Of 510 respondents, 11.2% reported moderate PA-based BWCD and 14.7% reported vigorous PA-based BWCD. Weight loss intention, BMI and Greek affiliation predicted both moderate and vigorous BWCD. CONCLUSIONS: Study findings suggest that Greek-affiliated students and students with weight loss intentions might be at an increased risk for BWCD. Along with promoting lower levels of alcohol consumption, college practitioners should consider discussing issues of weight and body image with college students as they relate to maladaptive drinking behavior.

Bystander interventions for sexual assault and dating violence on college campuses: Are we putting bystanders in harm's way?

OBJECTIVE: The present study investigated the well-being of bystanders who witness and intervene in sexual assault and dating violence situations on campus. PARTICIPANTS: Participants were 321 young men and women from a large university in the southeastern United States. METHODS: Participants completed a survey at the end of the Spring semester of 2015 about risky situations they had witnessed, with follow-up questions about their responses to the situations (eg, whether they intervened or not) and feelings about their responses. Participants also completed standardized measures of posttraumatic stress disorder and depression. RESULTS: Over 90% of the participants reported witnessing at least 1 of the risky events presented to them, and approximately 50% reported intervening in events. Intervening was associated with positive feelings, but traumatic stress symptoms were related to witnessing events and intervening. CONCLUSIONS: Results have direct implications for developing appropriate training programs for bystander intervention programs on college campuses.

Systematic Review of Dietary Interventions Targeting Sleep Behavior.

OBJECTIVES: Nearly 9 million Americans use prescription sleep aids to induce or maintain sleep; however, the long-term effects of these medications are unknown. Considering the number of individuals reporting insufficient sleep, nonpharmacologic methods for improving sleep are needed. DESIGN: A systematic review of published studies was conducted to determine the efficacy of nutritional intake as a modality for improving sleep behavior. Inclusion criteria for the review were interventions (both in vivo and in natura), using any quantitative design, employing a dietary intervention as the primary treatment variable, targeting sleep behavior, in nonclinical human populations age 18-50 years. RESULTS: A total of 21 studies (17 in vivo and 4 in natura) met the inclusion criteria and were included in the systematic review. CONCLUSIONS: The evidence for nutrition as treatment modality for improving sleep is mixed. Nearly half of the in vivo trials suggested a significant change in a primary sleep variable of interest. However, a majority of these trials relied on small sample sizes of healthy sleepers and manipulated nutrition in an acute fashion. Among the in natura studies, macronutrient composition appeared to have no effect. However, the small number of studies mainly recruited healthy sleepers, and most had limited control of the diet of participants.

Theory of reasoned action and theory of planned behavior-based dietary interventions in adolescents and young adults: a systematic review.

BACKGROUND: Childhood obesity has reached epidemic proportions in many nations around the world. The theory of planned behavior (TPB) and the theory of reasoned action (TRA) have been used to successfully plan and evaluate numerous interventions for many different behaviors. The aim of this study was to systematically review and synthesize TPB and TRA-based dietary behavior interventions targeting adolescents and young adults. METHODS: THE FOLLOWING DATABASES WERE SYSTEMATICALLY SEARCHED TO FIND ARTICLES FOR THIS REVIEW: Academic Search Premier; Cumulative Index to Nursing and Allied Health (CINAHL); Education Resources Information Center (ERIC); Health Source: Nursing/Academic Edition; Cochrane Central Register of Controlled Trials (CENTRAL); and MEDLINE. Inclusion criteria for articles were: 1) primary or secondary interventions, 2) with any quantitative design, 3) published in the English language, 4) between January 2003 and March 2014, 5) that targeted adolescents or young adults, 6) which included dietary change behavior as the outcome, and 7) utilized TPB or TRA. RESULTS: Of the eleven intervention studies evaluated, nine resulted in dietary behavior change that was attributed to the treatment. Additionally, all but one study found there to be a change in at least one construct of TRA or TPB, while one study did not measure constructs. All of the studies utilized some type of quantitative design, with two employing quasi-experimental, and eight employing randomized control trial design. Among the studies, four utilized technology including emails, social media posts, information on school websites, web-based activities, audio messages in classrooms, interactive DVDs, and health-related websites. Two studies incorporated goal setting and four employed persuasive communication. CONCLUSION: Interventions directed toward changing dietary behaviors in adolescents should aim to incorporate multi-faceted, theory-based approaches. Future studies should consider utilizing randomized control trial design and operationalize variables. More research is needed to identify the optimal TPB and TRA modalities to modify dietary behaviors.