Appearance vs. health motives for exercise and for weight loss

Objective

This study had three primary aims: (1) to investigate differences between restrained and unrestrained eaters in their reasons for exercise and their motives for losing weight; (2) to investigate the association of appearance and health motives for exercise and for losing weight with body image concerns; and (3) to determine whether appearance motives for exercise and for losing weight mediate the link between internalized societal standards of attractiveness and body image concerns.

Design

Cross-sectional survey.

Method

205 women completed measures of dietary restraint, reasons for exercise, motivation for losing weight, internalization of societal standards of attractiveness, and body image concerns.

Results

Unrestrained eaters were more motivated to exercise and to lose weight for health reasons than for appearance reasons, whereas restrained eaters were equally motivated by appearance and health reasons. Appearance-based motives for exercising and for losing weight were positively associated with body image concerns, whereas health-related reasons for exercise were negatively associated with body image concerns. Furthermore, in a multiple mediation analysis, appearance motives for weight loss mediated the relation between internalization of societal standards of attractiveness and body image concerns, but appearance reasons for exercise did not.

Conclusion

These findings indicate that appearance-based motives for exercise and weight loss are associated with negative outcomes. Efforts to promote exercise and weight management should emphasize the health benefits rather than the implications for appearance.     

3D Multiple Object Tracking Boosts Working Memory Span: Implications for Cognitive Training in Military Populations

Recently, there has been much theoretical and applied interest in the prospects of cognitive training for improving cognition. NeuroTracker is a relatively recent training device for improving dynamic attention in athletes by training 3D multiple-object tracking skills. We examined its effectiveness for improving working memory (WM) span in members of the Canadian Armed Forces (CAF) by randomly assigning participants to the experimental (NeuroTracker), active control (adaptive dual n-back task), or passive control (no contact) conditions. NeuroTracker training resulted in significant gains in verbal, visual, and matrix span. No gain was observed in the active or passive control group. These results suggest that NeuroTracker could be a useful training tool for increasing WM span in military samples. Future studies could examine the effects of NeuroTracker training on militarily relevant performance measures that draw on WM span.     

An Investigation of Neuronal Integrity in Severe Paediatric Traumatic Brain Injury

Magnetic Resonance Spectroscopy (MRS) and its association with neuropsychological functioning was examined in the chronic injury phase of paediatric traumatic brain injury (TBI). Fifteen children, aged 10-16 years, with severe TBIs were compared with 15 controls, matched for age and gender. The TBI group was found to have significantly lower levels of N-acetyl aspartate (NAA) and Choline (Cho) in the right frontal lobe and generally displayed reduced performances on neuropsychological tests. A correlation between metabolites and reaction times was also obtained. Findings indicate a role of proton MRS as a measure of neuronal integrity following severe paediatric TBI and suggest a potential association of MRS with specific neuropsychological impairments.     

Just Think About It: Mindfulness, Sexism, and Prejudice Toward Feminists

This study examined the relation between mindfulness, sexist motivations and beliefs, and prejudice toward women who violate traditional gender roles—namely feminists. In a preliminary study, 672 (251 men, 421 women) undergraduates from a United States Midwestern university completed a measure of mindfulness and warmth toward feminists and consistent with hypotheses, more mindfulness was associated with more warmth toward feminists. Extending this initial finding to the main study, 653 (273 men, 380 women) undergraduates from a U.S. Midwestern university completed measures of mindfulness, motivation to respond without sexism, ambivalent sexism, and warmth toward feminists. Consistent with hypotheses, compared to women participants, men participants were lower on internal motivation to respond without sexism, higher on hostile and benevolent sexism and less warm toward feminists. Also consistent with hypotheses, for men participants, more mindfulness was associated with higher internal motivation to respond without sexism, less benevolent sexism, and more warmth toward feminists. In contrast, for women participants, more mindfulness was only associated with less hostile sexism. Finally, a path analysis revealed that the positive relation between mindfulness and warmth toward feminists for men participants was partially mediated by more internal motivation to respond without sexism (i.e., a significant indirect effect), but not by less sexist beliefs. Implications for mindfulness, sexism, and prejudice more generally are discussed.     

Multilevel Models for Examining Individual Differences in Within-Person Variation and Covariation Over Time

Heterogeneity of variance may be more than a statistical nuisance—it may be of direct interest as a result of individual differences. In studies of short-term fluctuation, individual differences may relate to the magnitude of within-person variation as well as to level of an outcome or its covariation with other processes. Although models for heterogeneous variances have been utilized in group contexts (i.e., dispersion models), they are not usually applied in examinations of intraindividual variation. This work illustrates how an extension of the multilevel model for heterogeneous variances can be used to examine individual differences in level, between- and within-person covariation, and magnitude of within-person variation of daily positive and negative mood in persons with dementia.     

Demand Characteristics and Self-Report Measures of Imaginary Audience Sensitivity: Implications for Interpreting Age Differences in Adolescent Egocentrism

Self-consciousness during early adolescence has been explained as an outcome of adolescent egocentrism, in which adolescents create an imaginary audience (IA) of attentive, critical peers. The possibility that such self-consciousness might result from contact with peers who are more attentive and critical than those encountered during childhood or adulthood has not been considered. Study I tested whether young adults, who are not theoretically susceptible to IA, could be made to receive high scores on IA and self-consciousness measures by having them complete a procedure in 1 of 3 laboratory conditions—a critical audience, a noncritical audience, or no audience. However, participants in the critical-audience condition received significantly lower IA and self-consciousness scores than participants in the no-audience condition did. Study 2 tested whether the directions given to Study I participants might have been responsible for the unexpected findings. Results indicated that participants instructed to give mature-sounding responses received lower IA/self-consciousness scores than did those asked to report their honest opinions. Together, the results of Studies 1 and 2 indicated that survey measures of IA are subject to demand characteristics and highlighted the need to interpret with caution age differences in IA as traditionally assessed.     

Gamelike features might not improve data

Many psychological experiments require participants to complete lots of trials in a monotonous task, which often induces boredom. An increasingly popular approach to alleviate such boredom is to incorporate gamelike features into standard experimental tasks. Games are assumed to be interesting and, hence, motivating, and better motivated participants might produce better data (with fewer lapses in attention and greater accuracy). Despite its apparent prevalence, the assumption that gamelike features improve data is almost completely untested. We test this assumption by presenting a choice task and a change detection task in both gamelike and standard forms. Response latency, accuracy, and overall task performance were unchanged by gamelike features in both experiments. We present a novel cognitive model for the choice task, based on particle filtering, to decorrelate the dependent variables and measure performance in a more psychologically meaningful manner. The model-based analyses are consistent with the hypothesis that gamelike features did not alter cognition. A postexperimental questionnaire indicated that the gamelike version provided a more positive and enjoyable experience for participants than the standard task, even though this subjective experience did not translate into data effects. Although our results hold only for the two experiments examined, the gamelike features we incorporated into both tasks were typical of—and at least as salient and interesting as those usually used by—experimental psychologists. Our results suggest that modifying an experiment to include gamelike features, while leaving the basic task unchanged, may not improve the quality of the data collected, but it may provide participants with a better experimental experience.     

Memory for Emotional Content from Entertainment Film: The Role of Subtitles,Sex, and Empathy

A major component of consuming filmed entertainment is vicariously experiencing emotions of the filmed characters, yet little is known about how this occurs. Four experiments assessed memory for emotions felt by characters in extended film clips from either a contemporary farce (Overboard) or a historical drama (Sense and Sensibility) under various conditions of native or foreign language in the dialogue or subtitles. English-speaking participants watched a clip and then assessed on 6-point scales specific positive and negative affect felt by characters at various points during the film. Both positive and negative affect felt by characters in both films were perceived and remembered better in conditions with English sound or subtitles than in conditions with no English channel, although, unexpectedly, spoken dialogue or subtitles alone were equally effective at conveying emotion. Overall, emotion memory from the contemporary farce was better than from the historical drama and was surprisingly good even in conditions with no English, especially for the farce. Conditions with only sound, subtitles, or pictures were very comparable to each other. Participants higher in trait fantasy empathy remembered emotions better. The components of an eventual model of emotional comprehension were sketched.     

Need for closure is associated with urgency in perceptual decision-making

Constant decision-making underpins much of daily life, from simple perceptual decisions about navigation through to more complex decisions about important life events. At many scales, a fundamental task of the decision-maker is to balance competing needs for caution and urgency: fast decisions can be more efficient, but also more often wrong. We show how a single mathematical framework for decision-making explains the urgency/caution balance across decision-making at two very different scales. This explanation has been applied at the level of neuronal circuits (on a time scale of hundreds of milliseconds) through to the level of stable personality traits (time scale of years).