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711.
Research examined the effects of a supervised physical activity program on potential psychosocial mediators and determined whether changes in these psychosocial variables predicted changes in physical activity and fitness. Sedentary adolescent females were assigned to an intervention (n?=?79) or comparison (n?=?67) group. Cardiovascular fitness (cycle ergometer), physical activity (3-Day Physical Activity Recall), and psychosocial variables related to physical activity (i.e., self-efficacy, perceived barriers, social support, enjoyment) were assessed at three time points over the 9-month study. An intention-to-treat analysis showed that the intervention did not impact any of the psychosocial variables, with the exception of perceived barriers, which increased in the intervention group. Longitudinal analyses showed that improvements in fitness were associated with positive changes in global self-efficacy and exercise enjoyment. Psychosocial variables did not mediate the program's effects on fitness or activity. However, individual level changes in psychosocial variables were related to changes in cardiovascular fitness. 相似文献
712.
The relationship between affect and job performance has been the topic of previous meta-analytic investigations. However, these studies have been limited by their focus on only one form of affect, trait dimensional affect, or failure to differentiate between various forms of affect, such as state affect and emotions. The present study extends past research by meta-analytically examining the association between state dimensional affect and discrete emotions and three dimensions of job performance, task performance, organizational citizenship behavior, and counterproductive work behavior. In addition, we examined subgroup differences according to the temporal consistency of performance and affect measurement, and we reviewed studies that assessed the affect–performance link using within-person analyses in the context of experience sampling designs. 相似文献
713.
Dan Mcpherson Editor 《The American journal of family therapy》2013,41(4):361-363
Abstract This article addresses the parental alienation syndrome, which is the process by which one parent overtly or covertly speaks or acts in a derogatory manner to or about the other parent during or subsequent to a divorce proceeding, in an attempt to alienate the child or children from that other parent. 相似文献
714.
The emotional Stroop effect demonstrates that people are slower to name the ink colour of emotionally charged words than that of neutral words. Attributing this slowdown to emotionality or threat requires that the emotion and neutral words presented are equal on all extraneous variables. However, it is impossible in principle to match the two types of words on all conceivable variables. To address the problem, we presented the same set of words, polarised to be negative in one condition and neutral in another by using appropriate prime words that produced the desired valence through idiomatic two-word expressions. Across two studies, participants took longer to name the colour of the same words when they were rendered negative than when they were rendered neutral. This difference reflects a true emotional Stroop effect given the control provided for all potentially confounding variables tied to the target stimuli. The new procedure also enables researchers to calculate item-specific emotional Stroop effects for the first time. 相似文献
715.
A group of 64 Israeli twelfth-grade students of two different ethnic backgrounds participated in an experiment exploring the effects of argumentative design and social identity on the learning of a charged, ethnicity-related historical controversy. Students were divided into two learning conditions: an argumentative-disciplinary condition and a conventional textbook-based control condition. Students wrote short essays about Israel's “Melting Pot” policy of immigration absorption, prior to and after evaluation of historical sources and discussion. In the argumentative-disciplinary condition the final argumentative level of writing and the frequencies of stand and plot change were higher than in the control essays. As for confirmation bias, primary plot, stand, and argumentative level of pre-essays predicted final outcomes in the conventional textbook-based learning condition; no such relation existed in the argumentative-disciplinary condition. Narratives from the different ethnic groups differed in the frequency, direction, and degree of change, all toward improved in-group image. The design decisions toward the facilitation of argumentative activity seemed to facilitate narrative change, while social identity needs seemed to motivate it. 相似文献
716.
The twinning behaviour of Twinning-induced plasticity (TWIP) steel has been studied by analysing the grain orientation and the Taylor factor, based on microstructural and electron backscatter diffraction device observations. It is demonstrated that the Taylor factor can give an important guideline for determining the deformation mode of TWIP steel. The higher the Taylor factor, the easier the formation of twins and thus a tendency for the deformation mode to be mechanical twinning, while a low Taylor factor corresponds to a slip deformation mode. When the loading temperature is relatively low, the high Taylor factor regions increase and thus deformation twinning becomes easier while slip becomes more difficult, leading to increased tensile stress and decreased elongation. 相似文献
717.
718.
The existence and diversity of human cultures are made possible by our species-specific cognitive capacities. But how? Do cultures emerge and diverge as a result of the deployment, over generations and in different populations, of general abilities to learn, imitate and communicate? What role if any do domain-specific evolved cognitive abilities play in the emergence and evolution of cultures? These questions have been approached from different vantage points in different disciplines. Here we present a view that is currently developing out of the converging work of developmental psychologists, evolutionary psychologists and cognitive anthropologists. 相似文献
719.
Danél Olwage 《Journal of Psychology in Africa》2013,23(4):342-350
This study investigated influences of core self-evaluation traits, career decision-making difficulties and social support on student burnout and engagement. A cross-sectional design was used with a non-probability quota sample. In the multiple regression analyses, self-efficacy, inconsistent information due to internal conflict and (lack of) parental support were significant predictors of exhaustion, cynicism, vigour and dedication. Self-esteem was also a significant predictor for the two engagement dimensions. In addition, lack of information about the self, lack of information about the occupations and inconsistent information due to external conflict predicted cynicism. 相似文献
720.