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191.
The authors examined postural asymmetries during quiet stance and while holding evenly or unevenly distributed loads. Right-hand dominant subjects preferentially loaded their right lower limb when holding no load or a load evenly distributed in both hands, but no differences in center of pressure (CoP) were observed between the left and right limbs. However, longer CoP displacement was observed under the preferentially loaded limb, which may reflect a functional asymmetry that allows quick movement of one limb in response to a potential perturbation. When a load was held only in the nondominant hand, sample entropy decreased in the left (loaded) limb but increased in the right (unloaded) limb, suggesting the unloaded foot compensated for a loss of control flexibility in the loaded foot.  相似文献   
192.
Prior research has shown that depressive symptoms are associated with an enhanced attention toward negative stimuli and difficulty of disengaging attention from negative stimuli. The current study was an extension of a 2005 study by Koster and colleagues. A different stimulus presentation time and word set were used. The whole range of depressive symptoms was included in this sample instead of creating dichotomized groups. The Exogenous Cueing Task with negative, positive, and neutral cues was administered to 85 female undergraduate university students. Participants completed the Beck's Depression Inventory-II-NL questionnaire to measure self-reported depression. Contrary to previous findings, depressive symptoms were related to a facilitated rather than impaired attentional disengagement from negative stimuli. An explanation for the discrepancy with findings from Koster, et al. may be the different stimulus presentation time (1000 msec. instead of 500 or 1500 msec.).  相似文献   
193.
Information protocols (IP’s) were developed to describe players who learn their social situation by their experiences. Although IP’s look similar to colored multi-graphs (MG’s), the two objects are constructed in fundamentally different ways. IP’s are constructed using the global concept of history, whereas graphs are constructed using the local concept of edges. We give necessary and sufficient conditions for each theory to be captured by the other. We find that the necessary and sufficient condition for IP theory to be captured by MG theory, which we call SE, excludes relevant game situations. Hence, we conclude that IP theory remains a vital tool and cannot be replaced by MG theory.  相似文献   
194.
Two complementary bodies of literature either claim explicitly or imply that human cruelty is rooted in asymmetrical relationships. The first describes and analyzes various forms of domination and acquiescence, including colonialism, racism, imperialism, sexism, and interpersonal power dynamics, among others. The second attempts to describe what would constitute the antidote, namely symmetrical relationships of mutuality and equality. Both of these literatures counsel abandoning asymmetrical relationships in favor of the symmetrical. To the contrary, this paper argues that it is only in the context of asymmetrical relationships that humans can learn the basics of equality and mutual regard that undergird democracy. More particularly, the moral use of asymmetrical relations would be to help the young acquire, inter alias, the kinds of self-awareness and self-understanding that would enable them to function as responsible parties in symmetrical relations.  相似文献   
195.
The study investigated a potential relationship between level of executive functioning and rates of delay discounting (i.e., the subjective decrease in the value of an outcome if its delivery is delayed). University students completed an executive-functioning questionnaire and then a delay-discounting task involving four different outcomes (money, cigarettes, dating partner, body image). Results showed that the overall measure of executive functioning was a significant predictor of rates of discounting of three of the four outcomes, and approached significance for the fourth outcome. Further, different subscales of executive functioning were significantly correlated with discounting of different outcomes. These results suggest that executive functioning plays a role in discounting of delayed outcomes and that procedures designed to affect either executive function or delay discounting might result in concomitant changes in the other measure.  相似文献   
196.
Individuals with developmental disabilities have limited opportunities to participate in leisure activities, frequently due to lack of skills. The purpose of the current study was to teach three adults diagnosed with mild intellectual disability to use an iPad in the context of playing the video game Angry Birds. We used an adapted multiple baseline across participants research design to teach the task, which included opening the cover of the iPad, unlocking the device, opening Angry Birds, playing the game, and putting the iPad away. Instruction took place during breaks in a private room at a sheltered workshop. During intervention, participants had access to an activity schedule to aid in completion of the task. In some cases, extra prompts were provided to increase attention to the activity schedule. All three participants showed improvement in the target skill with intervention and gains were sustained during the maintenance phase.  相似文献   
197.
Current models of health anxiety suggest that fear resulting from false alarms to perceived threats to one's health results in the development of hypochondriasis and related disorders. Disgust has been proposed as an affective response that may function as an etiological and maintenance mechanism in health anxiety. Moreover, the way in which an individual perceives the disgust response (disgust sensitivity) may affect health anxiety, separately from their likelihood of experiencing disgust (disgust propensity). The present study utilized multiple hierarchical regression analysis to investigate the degree to which self-reported disgust sensitivity and disgust propensity differentially predict elevated health anxiety in a sample of 620 non-treatment-seeking undergraduates. Further, this effect is tested in comparison to that of anxiety sensitivity, a construct demonstrated to be strongly related to health anxiety. Analyses indicate that disgust sensitivity, rather than disgust propensity, is primarily responsible for this relation. An additional analysis tested the specificity of disgust sensitivity relative to anxiety sensitivity. Disgust sensitivity was no longer significant after including anxiety sensitivity in the model. Suggestions for further evaluation of this relation are provided. These results suggest that although disgust sensitivity may appear related to health anxiety, this relation may be confounded by anxiety sensitivity.  相似文献   
198.
Optional stopping refers to the practice of peeking at data and then, based on the results, deciding whether or not to continue an experiment. In the context of ordinary significance-testing analysis, optional stopping is discouraged, because it necessarily leads to increased type I error rates over nominal values. This article addresses whether optional stopping is problematic for Bayesian inference with Bayes factors. Statisticians who developed Bayesian methods thought not, but this wisdom has been challenged by recent simulation results of Yu, Sprenger, Thomas, and Dougherty (2013) and Sanborn and Hills (2013). In this article, I show through simulation that the interpretation of Bayesian quantities does not depend on the stopping rule. Researchers using Bayesian methods may employ optional stopping in their own research and may provide Bayesian analysis of secondary data regardless of the employed stopping rule. I emphasize here the proper interpretation of Bayesian quantities as measures of subjective belief on theoretical positions, the difference between frequentist and Bayesian interpretations, and the difficulty of using frequentist intuition to conceptualize the Bayesian approach.  相似文献   
199.
This study evaluated the effects of self‐monitoring by swimmers to improve their performance and assessed the effects of reactivity to observer presence on their performance. Seven public high school swim team members self‐monitored their behavior on dry erase boards to increase the number of assigned laps completed at practice. Reactivity to observer presence was assessed as a confederate, recorded the number of laps completed during observer absent conditions. The percentage of assigned laps completed increased during the self‐monitoring phases. The self‐monitoring and feedback phase further increased the percentage of assigned laps completed and increased the participants' mean level of reporting accuracy. The effects from the reactivity assessment were mixed across participants. Further research is needed to examine reactivity effects in sport settings. Copyright © 2014 John Wiley & Sons, Ltd.  相似文献   
200.
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