Gender Differences in Population Versus Media Body Sizes: A Comparison over Four Decades

Mean body mass indices (BMIs, kg/m²)of North Americans aged 18 to 24 collected from 11national health surveys were compared to: Playboycenterfold models, Miss America Pageant winners,andPlaygirl models. The survey samples were representative of themix of different ethnic and racial groups in Canada andthe USA. No racial or ethnic information was availablefor either the Playboy women or the Miss America Pageant winners. Ninety percent of the Playgirlmen were white; 10%, black; 1.5%, Hispanic black; and.8%, American Samoan. From the 1950s to the present,while the body sizes of Miss America Pageant winners decreased significantly and the body sizes ofPlayboy centerfold models remained below normal bodyweight, the body sizes of Playgirl models and youngadult North American women and men increasedsignificantly. The increase in body size of Playgirl modelsappears to be due to an increase in muscularity, whereasthe increase in body size of young North American menand women is more likely due to an increase in body fat. Thus, in the 1990s, the body size andshape of the average young adult North American becameincreasingly different from the ideal being promoted bythe media. Furthermore the difference in male and female body sizes depicted by the media inthe 1990s was huge, whereas the difference between thebody sizes of 18- to 24-year-old North American womenand men was actually quite small. These discrepancies are discussed in relation to the differentsociocultural expectations for the two genders and theincreasing prevalence of body dissatisfaction reportedby both women and men.     

Early Behavior Problems as a Predictor of Later Peer Group Victimization: Moderators and Mediators in the Pathways of Social Risk

This study is a prospective investigation of the predictive association between early behavior problems (internalizing, externalizing, hyperactivity–impulsiveness, immaturity–dependency) and later victimization in the peer group. Teacher ratings of the behavioral adjustment of 389 kindergarten and 1st-grade children (approximate age range of 5 to 6 years-old) were obtained, using standardized behavior problem checklists. These ratings predicted peer nomination scores for victimization, obtained 3 years later, even after the prediction associated with concurrent behavior problems was statistically controlled. Further analyses suggested that the relation between early behavior problems and later victimization is mediated by peer rejection and moderated by children's dyadic friendships. Behavior problems appear to play an important role in determining victimization within the peer group, although the relevant pathways are complex and influenced by other aspects of children's social adjustment.     

The effectiveness of individual versus group induction of depressed mood.

This study is an investigation of the effectiveness of an individually administered mood induction procedure compared with an equivalent procedure administered to a group. Seventy-nine nondepressed individuals (25 men, 54 women) were randomly assigned to either a depressive or a neutral mood induction in an individual or a group setting. In each procedure, the mood induction involved the Velten self-statement procedure (E. Velten, 1968) enhanced by related mood music. Overall, both the individual and group induction procedures were effective in producing a depressed mood state, and their effectiveness was unrelated to social desirability or the sex of the participant. However, the group procedure was more vulnerable to individual differences in response, and its use in research on depression requires stringent criteria for mood change.     

On the development of communicative understandings: An early strategy for interpreting and responding to messages

Young children's apparently sophisticated understanding of language is explained by a simple heuristic which produces responses fortuitously appropriate to many of the messages directed to them. Specifically, the strategy recruits action responses to language unless some element, either linguistic or nonlinguistic, indicates otherwise. Two experiments tested for the existence of the heuristic by examining the responses of children, 19–34 months of age, to sentences susceptible of more than one interpretation. In the first experiment such sentences were spoken in as neutral a context as possible. In the second, the same sorts of sentences were presented in contexts supporting either action or informing responses. The results of both experiments indicate that young children interpret and respond to language in terms of an action-based strategy. Moreover, the observed effects of context show that even young children engage in a continuous, context-sensitive process of interpretation. The data are discussed with regard to speech act theory and its role in a developmental theory of understanding.     

The verbal helping skills of trained and untrained human service paraprofessionals

The verbal helping skills of human service paraprofessionals in a youth service agency were studied. Workers who had previously completed a 10-week systematic training program in basic helping skills were compared to untrained volunteer staff. Using simulated helping interviews, it was found that training made a significant impact on trainees' verbal helping responses. Skill level was maintained at a 2-month follow-up for certain responses whereas others returned to pretraining levels. Trainees were found to use significantly more "helpful" responses than volunteers. The need for training even carefully selected paraprofessionals is discussed.     

Development of strategies for recalling letter sequences

Kindergarten, second-grade, and fourth-grade children (6, 8, and 10 years of age, respectively) were asked to recall letter sequences on a task that required the use of: (a) a verbal strategy; (b) a positional strategy; or (c) either strategy. Additional trials, allowing either strategy, were interspersed among those requiring a verbal or positional strategy; strategy use was determined from performance on these interspersed trials. The results show that children at all grade levels attempted to use a task-appropriate strategy. Performance on the verbal task showed a more marked developmental increase than did performance on the positional task. A second experiment replicated the first with the interspersed trials removed. A third experiment was designed to determine whether letter names interfered with older children's efficient use of a positional strategy. Even with this source of interference removed, the developmental pattern of Experiments 1 and 2 was replicated. There was a Sex by Condition interaction in Experiments 2 and 3 which showed that males do better in the condition requiring a positional strategy, and females do better in the condition requiring a verbal strategy.     

Finding groups using model-based cluster analysis: heterogeneous emotional self-regulatory processes and heavy alcohol use risk

Model-based cluster analysis is a new clustering procedure to investigate population heterogeneity utilizing finite mixture multivariate normal densities. It is an inferentially based, statistically principled procedure that allows comparison of nonnested models using the Bayesian information criterion to compare multiple models and identify the optimum number of clusters. The current study clustered 36 young men and women on the basis of their baseline heart rate and heart rate variability (HRV), chronic alcohol use, and reasons for drinking. Two cluster groups were identified and labeled the high alcohol risk and normative groups. Compared to the normative group, individuals in the high alcohol risk group had higher levels of alcohol use and more strongly endorsed disinhibition and suppression reasons for use. The high alcohol risk group showed significant HRV changes in response to positive and negative emotional and appetitive picture cues, compared to neutral cues. In contrast, the normative group showed a significant HRV change only to negative cues. Findings suggest that individuals with autonomic self-regulatory difficulties may be more susceptible to heavy alcohol use and use of alcohol for emotional regulation.     

An analysis of age differences in perceptual speed

Tests of the generalized slowing hypothesis have demonstrated the strong predictive power of tests of perceptual comparison speed in accounting for age differences across a range of cognitive domains. The goals of this study were to determine whether short-term memory (STM) and perceptual demands contribute to age differences on two commonly used tests of perceptual comparison speed, the letter and pattern comparison tests, and to test whether these task components account for unique variance in predicting age differences in working memory and reasoning. Results showed that, after controlling for visual contrast sensitivity and a general slowing factor, age differences increased with increases in both STM load and perceptual degradation. Only STM load, however, accounted for a significant portion of the relationship of age with higher level cognition. We concluded that perceptual comparison tests are dependent on multiple age-sensitive abilities, not all of which are related to age differences in higher level cognition.     

Parents’ Monitoring Knowledge Attenuates the Link Between Antisocial Friends and Adolescent Delinquent Behavior

Developmental trajectories of parents’ knowledge of their adolescents’ whereabouts and activities were tested as moderators of transactional associations between friends’ antisociality and adolescent delinquent behavior. 504 adolescents (50% female) provided annual reports (from ages 12 to 16) of their parents’ knowledge and (from ages 13 to 16) their own delinquent behavior and their friends’ antisociality. Parents also reported the adolescents’ delinquent behavior. Growth mixture modeling was used to identify two sub-groups based on their monitoring knowledge growth trajectories. Adolescents in the sub-group characterized by decreasing levels of parents’ knowledge reported more delinquent behavior and more friend antisociality in early adolescence, and reported greater increases in delinquent behavior and friend antisociality from early to middle adolescence compared to adolescents in the sub-group characterized by increasing levels of parents’ knowledge. Transactional associations consistent with social influence and social selection processes also were suppressed in the increasing knowledge sub-group as compared to the decreasing knowledge sub-group. Findings of this study were presented at the 2005 biennial meeting of the Society for Research in Child Development.     

Social information processing mediates the intergenerational transmission of aggressiveness in romantic relationships.

This study explored the K. A. Dodge (1986) model of social information processing as a mediator of the association between interparental relationship conflict and subsequent offspring romantic relationship conflict in young adulthood. The authors tested 4 social information processing stages (encoding, hostile attributions, generation of aggressive responses, and positive evaluation of aggressive responses) in separate models to explore their independent effects as potential mediators. There was no evidence of mediation for encoding and attributions. However, there was evidence of significant mediation for both the response generation and response evaluation stages of the model. Results suggest that the ability of offspring to generate varied social responses and effectively evaluate the potential outcome of their responses at least partially mediates the intergenerational transmission of relationship conflict.