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201.
Paul A. Estabrooks Samantha M. Harden Shauna M. Burke 《Social and Personality Psychology Compass》2012,6(1):18-40
Over the past 20 years group dynamics‐based interventions have been used to successfully increase physical activity. However, the literature is less clear on the underlying mechanisms of effectiveness. That is, what makes these group dynamics interventions work? We conducted a systematic review to identify studies that used different group dynamics strategies to promote physical activity. Seventeen studies were identified and were coded by two raters to determine the degree to which group dynamics strategies were used, the format of the programs, and any analytic procedures used to determine the causal mechanisms underlying intervention effectiveness. The results of the coding indicated that while there is no standard package of group dynamics strategies being applied across the literature‐ and regardless of the breadth of the underlying theory or the structure of the programs‐ the effect on physical activity is robust. However, few studies explicitly measured potential causal mechanisms and even fewer completed the necessary analysis to detect mediation. We concluded that future research on developing a unified theory for group dynamics with appropriate measurement tools is necessary to further enhance the effects of group dynamics on physical activity promotion. 相似文献
202.
203.
Samantha M. Freis Claire L. Morrison Jeffrey M. Lessem John K. Hewitt Naomi P. Friedman 《Developmental science》2022,25(1):e13150
Executive functions (EFs) and intelligence (IQ) are phenotypically correlated. In twin studies, latent variables for EFs and IQ display moderate to high heritability estimates; however, they show variable genetic correlations in twin studies spanning childhood to middle age. We analyzed data from over 11,000 children (9- to 10-year-olds, including 749 twin pairs) in the Adolescent Brain Cognitive Development (ABCD) Study to examine the phenotypic and genetic relations between EFs and IQ in childhood. We identified two EF factors—Common EF and Updating-Specific—which were both related to IQ (rs = 0.64–0.81). Common EF and IQ were heritable (53%–67%), and their genetic correlation (rG = 0.86) was not significantly different than 1. These results suggest that EFs and IQ are phenotypically but not genetically separable in middle childhood, meaning that this phenotypic separability may be influenced by environmental factors. 相似文献
204.
This paper highlights the development and testing of the Infant Movement Motivation Questionnaire (IMMQ), an instrument designed to evaluate qualities of infant characteristics that relate specifically to early motor development. The measurement development process included three phases: item generation, pilot testing and evaluation of acceptability and feasibility for parents and exploratory factor analysis. The resultant 27-item questionnaire is designed for completion by parents and contains four factors including Activity, Exploration, Motivation and Adaptability. Overall, the internal consistency of the IMMQ is 0.89 (Cronbach's alpha), with test–retest reliability measured at 0.92 (ICC, with 95% CI 0.83–0.96). Further work could be done to strengthen the individual factors; however it is adequate for use in its full form. The IMMQ can be used for clinical or research purposes, as well as an educational tool for parents. 相似文献
205.
Alan Silberberg Candice Allouch Samantha Sandfort David Kearns Heather Karpel Burton Slotnick 《Animal cognition》2014,17(3):609-618
Ben-Ami Bartal et al. (Science 334:1427–1430, 2011) showed that a rat in an open space (free rat) would touch the front door of a restraining tube to open its rear door, thereby enabling a rat trapped within (trapped rat) to enter a larger space that was farther away from the free rat. Since opening the rear door distanced the trapped rat from the free rat, Ben-Ami Bartal et al. argued free-rat behavior could not be motivated by the pursuit of social contact. Instead, this rat was empathically motivated, its goal being to reduce the presumed distress of the rat trapped in the restraining tube. In two experiments, we show that (a) a free rat will not learn to touch the front door to open the rear door when it is the first condition of the experiment; (b) over time, a trapped rat will often return to a restraining tube despite its presumed aversiveness; and (c) a free rat experienced in touching the front door will continue to touch it even if touching does not free the trapped rat. We explain these results and Ben-Ami Bartal et al.’s in terms of two processes, neophobia and the pursuit of social contact. When first placed in a restraining tube, neophobia causes the trapped rat to escape the tube when the rear door is opened. Across sessions, neophobia diminishes, permitting the rats’ pursuit of social contact to emerge and dominate free- and trapped-rat behavior. 相似文献
206.
Samantha DePasque Swanson Elizabeth Tricomi 《Cognitive, affective & behavioral neuroscience》2014,14(2):610-620
The striatum plays a critical role in learning from reward, and it has been implicated in learning from performance-related feedback as well. Positive and negative performance-related feedback is known to engage the striatum during learning by eliciting a response similar to the reinforcement signal for extrinsic rewards and punishments. Feedback is an important tool used to teach new skills and promote healthful lifestyle changes, so it is important to understand how motivational contexts can modulate its effectiveness at promoting learning. While it is known that striatal responses scale with subjective factors influencing the desirability of rewards, it is less clear how expectations and goals might modulate the striatal responses to cognitive feedback during learning. We used functional magnetic resonance imaging to investigate the effects of task difficulty expectations and achievement goals on feedback processing during learning. We found that individuals who scored high in normative goals, which reflect a desire to outperform other students academically, showed the strongest effects of our manipulation. High levels of normative goals were associated with greater performance gains and exaggerated striatal sensitivity to positive versus negative feedback during blocks that were expected to be more difficult. Our findings suggest that normative goals may enhance performance when difficulty expectations are high, while at the same time modulating the subjective value of feedback as processed in the striatum. 相似文献
207.
Michelle N. Shiota Samantha L. Neufeld Alexander F. Danvers Elizabeth A. Osborne Oliver Sng Claire I. Yee 《Social and Personality Psychology Compass》2014,8(3):104-117
While positive emotion can be conceptualized broadly as a response to the potential for reward, the environment offers different kinds of rewards, and these are best approached in somewhat different ways. A functional approach to positive emotion differentiation distinguishes among several different types of rewards with strong implications for adaptive fitness and posits the existence of “discrete” positive emotions that promote an adaptive response to each reward. A taxonomy of eight positive emotions, dubbed the “PANACEAS” taxonomy based on an acronym of the first letter of each of the eight constructs, is presented as an example of this approach. Positive emotion constructs defined through functional analyses are useful for guiding empirical research, especially for identifying prototypical eliciting stimuli, and generating hypotheses about the implications of different positive emotions for a variety of outcomes. Research findings are reviewed that support the importance of positive emotion differentiation in understanding the effects of positive emotions on cognition, physiology, and behavior. Advantages of the functional approach are discussed, as well as implications of the approach for evaluating major theories of the structure of emotion. 相似文献
208.
Rachel S. White Teresa Marino Carper Samantha L. Scott Melissa Middleton Kimberly Renk Amie Grills-Taquechel 《Journal of child and family studies》2014,23(8):1510-1518
When experiencing natural disasters, coping is important. Individuals who have behavior problems may use less effective coping, however. This study sought to better understand the relationship between emerging adults’ behavior problems and coping following hurricanes. Using a sample of 193 emerging adults, correlations suggested that emerging adults who reported more behavior problems also endorsed higher levels of avoidant coping. More specifically, multivariate analyses of variance and subsequent post hoc analyses indicated that emerging adults who were experiencing relatively low levels of both internalizing and externalizing behavior problems endorsed avoidant coping significantly less often relative to those emerging adults who were experiencing relatively high levels of internalizing behavior problems only and those who were experiencing relatively high levels of both types of behavior problems. These results suggested that those who experience behavior problems following hurricanes may benefit from interventions that could improve the coping that they utilize. 相似文献
209.
In this study, heterosexual (n = 95) and nonheterosexual (n = 84) women were asked to rate figure drawings and computer-generated images of women that varied in body fat, waist-to-hip ratio, and breast size in terms of self, ideal, and cultural ideal; discrepancy indices, indicating body dissatisfaction, were created for each body aspect. Nonheterosexual women had significantly higher body mass indices (BMIs) than heterosexual women, but when the effects of BMI were controlled, participants evidenced similar perceptions of their bodies, their ideal bodies, and the female cultural ideal, as well as similar levels of body dissatisfaction for body fat, waist-to-hip ratio, and breast size. The results of this study suggest that being a member of a society that highly values a thin, curvaceous, relatively large-breasted body puts women, regardless of sexual orientation, at risk for body dissatisfaction. 相似文献
210.
Samantha A. Reina Lauren B. Shomaker Mira Mooreville Amber B. Courville Sheila M. Brady Cara Olsen Susan Z. Yanovski Marian Tanofsky-Kraff Jack A. Yanovski 《Body image》2013,10(2):182-190
Parental feeding practices and sociocultural pressures theoretically influence eating behavior. Yet, whether these factors relate to eating in the absence of hunger (EAH) is unknown. We assessed if sociocultural pressures were associated with EAH among 90 adolescents (Mage = 15.27, SD = 1.39; 48% female). Parents completed the Child Feeding Questionnaire. Adolescents completed the Perceived Sociocultural Pressures Scale, Sociocultural Attitudes Towards Appearance Questionnaire-3, and Multidimensional Body Self-Relations Questionnaire-Appearance Scales. On two occasions, EAH was assessed as snack food intake after adolescents ate to satiety. Controlling for body composition and demographics, parental restriction and family pressure to be thin were associated with greater EAH. Media pressure was related to more EAH in girls. Appearance orientation and preoccupation with becoming overweight mediated links between sociocultural pressures and EAH. Findings support the notion that sociocultural pressures and their links to body image may contribute to the course of disinhibited eating behaviors during adolescence. 相似文献