Multimedia and simulation programs are increasingly being used for anatomy instruction, yet it remains unclear how learning with these technologies compares with learning with actual human cadavers. Using a multilevel, quasi-experimental-control design, this study compared the effects of "Anatomy and Physiology Revealed" (APR) multimedia learning system with a traditional undergraduate human cadaver laboratory. APR is a model-based multimedia simulation tool that uses high-resolution pictures to construct a prosected cadaver. APR also provides animations showing the function of specific anatomical structures. Results showed that the human cadaver laboratory offered a significant advantage over the multimedia simulation program on cadaver-based measures of identification and explanatory knowledge. These findings reinforce concerns that incorporating multimedia simulation into anatomy instruction requires careful alignment between learning tasks and performance measures. Findings also imply that additional pedagogical strategies are needed to support transfer from simulated to real-world application of anatomical knowledge.

WHAT'S KNOWN ON THIS SUBJECT:Resistance exercise is known to have a robust effect on glycemic control and cardiometabolic health among children and adolescents, even in the absence of weight loss. WHAT THIS STUDY ADDS:Normalized strength capacity is associated with lower cardiometabolic risk clustering in boys and girls, even after adjustment for cardiorespiratory fitness, level of physical activity, and BMI. abstract OBJECTIVES: The purpose of this study was to determine the genderspecific independent association between muscular strength and cardiometabolic risk clustering in a large cohort (n = 1421) of children.METHODS: Principal component analysis was used to determine the pattern of risk clustering and to derive a continuous aggregate score (MetScore) from various cardiometabolic risk components: percent body fat (%BF), fasting glucose, blood pressure, plasma triglycerides levels, and HDL-cholesterol. Gender-stratified risk and MetScore were assessed by using general linear models and logistic regression for differences between strength tertiles, as well as independent associations with age, BMI, estimated cardiorespiratory fitness (CRF), physical activity, and muscular strength (normalized for body mass). RESULTS:In both boys (n = 670) and girls (n = 751), there were significant differences in cardiometabolic profiles across strength tertiles, such that stronger adolescents had lower overall risk. Age, BMI, cardiorespiratory fitness, physical activity participation, and strength were all individually correlated with multiple risk components, as well as the overall MetScore. However, in the adjusted model, only BMI (b = 0.30), physical inactivity (b = 0.30), and normalized strength capacity (b = -1.5) emerged as significant (P , .05) predictors of MetScore. %BF was the strongest loading coefficient within the principal component analysis-derived MetScore outcome. CONCLUSIONS:Normalized strength is independently associated with lower cardiometabolic risk in boys and girls. Moreover, %BF was associated with all cardiometabolic risk factors and carried the strongest loading coefficient. These findings bolster the importance of early strength acquisition and healthy body composition in childhood.

Jigsaw is a peer learning procedure based on the assumption that making "children treat each other as resources" (Aronson & Patnoe, 2011, p. 8) stimulates cooperation among equals. Using a short-term, longitudinal experimental design in 14 sections of an undergraduate human anatomy laboratory, we contrasted this perspective with the idea that Jigsaw's two-group composition actually elicits a mix of opposing social-psychological processes and outcomes. Supporting this view, students' perceptions of social interdependence and sociocognitive conflict regulation covaried over time with each other and with motivation and achievement. Likewise, rather than solely elicit cooperation, Jigsaw students initially reported higher levels of competition and individualistic efforts than students in a business-as-usual (BAU) control, and lower levels of epistemic regulation. These trends then reversed over time, but the magnitude of increasing cooperation and decreasing competition and individualistic efforts among Jigsaw students never exceeded that of BAU students. In fact, at the end of the semester, the only significant differences between Jigsaw and BAU were for relational regulation and academic achievement. Overall, these findings provide a much more complete but complicated portrait of Jigsaw social psychology and its effects over time, and so doing indicate that theory development is needed to account for mixed-motive situations that simultaneously elicit cooperative, competitive, and individualistic goals and different forms of sociocognitive conflict regulation. For practice, findings also suggest that simply distributing resources among jigsaw group members does not result in optimal outcomes, and consequently Jigsaw must change in ways that strengthen positive interdependence and decrease social comparison. Educational Impact and Implications StatementThis study suggests that Jigsaw, a classic peer learning procedure in which students are expected to combine resources and work together cooperatively actually involves a mix cooperative, competitive, and individualistic efforts as well as social comparison. Thus, even though Jigsaw increased academic achievement compared with a business-as-usual control, this study's overall pattern of results suggests that simply distributing resources among jigsaw group members does not result in optimal outcomes. Instead, it may be more appropriate to think of Jigsaw as a two-group composition that must be modified to increase cooperation and decrease social comparison.

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BackgroundThe purpose of this study was to determine the sex-specific pattern of pediatric cardiometabolic risk with principal component analysis, using several biological, behavioral and parental variables in a large cohort (n = 2866) of 6th grade students.MethodsCardiometabolic risk components included waist circumference, fasting glucose, blood pressure, plasma triglycerides levels and HDL-cholesterol. Principal components analysis was used to determine the pattern of risk clustering and to derive a continuous aggregate score (MetScore). Stratified risk components and MetScore were analyzed for association with age, body mass index (BMI), cardiorespiratory fitness (CRF), physical activity (PA), and parental factors.ResultsIn both boys and girls, BMI and CRF were associated with multiple risk components, and overall MetScore. Maternal smoking was associated with multiple risk components in girls and boys, as well as MetScore in boys, even after controlling for children’s BMI. Paternal family history of early cardiovascular disease (CVD) and parental age were associated with increased blood pressure and MetScore for girls. Children’s PA levels, maternal history of early CVD, and paternal BMI were also indicative for various risk components, but not MetScore.ConclusionsSeveral biological and behavioral factors were independently associated with children’s cardiometabolic disease risk, and thus represent a unique gender-specific risk profile. These data serve to bolster the independent contribution of CRF, PA, and family-oriented healthy lifestyles for improving children’s health.