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121.
We evaluated 2 3-component multiple-schedule sequences-a response interruption and redirection (RIRD) treatment sequence and a no-interaction control sequence-using a multielement design. With this design, we were able to evaluate the immediate and subsequent effects of RIRD on 2 participants' vocal stereotypy. For both participants, RIRD produced an immediate decrease in vocal stereotypy and did not result in a subsequent increase. 相似文献
122.
Feasibility and Preliminary Outcomes of a School-Based Mindfulness Intervention for Urban Youth 总被引:1,自引:0,他引:1
Tamar Mendelson Mark T. Greenberg Jacinda K. Dariotis Laura Feagans Gould Brittany L. Rhoades Philip J. Leaf 《Journal of abnormal child psychology》2010,38(7):985-994
Youth in underserved, urban communities are at risk for a range of negative outcomes related to stress, including social-emotional
difficulties, behavior problems, and poor academic performance. Mindfulness-based approaches may improve adjustment among
chronically stressed and disadvantaged youth by enhancing self-regulatory capacities. This paper reports findings from a pilot
randomized controlled trial assessing the feasibility, acceptability, and preliminary outcomes of a school-based mindfulness
and yoga intervention. Four urban public schools were randomized to an intervention or wait-list control condition (n = 97 fourth and fifth graders, 60.8% female). It was hypothesized that the 12-week intervention would reduce involuntary
stress responses and improve mental health outcomes and social adjustment. Stress responses, depressive symptoms, and peer
relations were assessed at baseline and post-intervention. Findings suggest the intervention was attractive to students, teachers,
and school administrators and that it had a positive impact on problematic responses to stress including rumination, intrusive
thoughts, and emotional arousal. 相似文献
123.
Catherine G. Collins Sharon K. Parker 《Journal of Occupational & Organizational Psychology》2010,83(4):1003-1023
Teams that have positive beliefs about their capability tend to perform more effectively. However, relatively little is known about the nature and change of different types of team capability beliefs. Team potency and team efficacy are two approaches to understanding team capability beliefs, but few studies have considered these beliefs simultaneously. We investigate their distinctiveness and relative predictive power. Additionally, we propose two types of team efficacy: team outcome efficacy and team process efficacy. In two longitudinal samples of executive MBA study teams (sample 1, N=213 individuals in 41 teams; sample 2, N=360 individuals in 89 teams), we showed that team potency, team outcome efficacy, and team process efficacy are factorially distinct and measure invariant at four time points over 7 months (except for high levels of team outcome efficacy for which factorial invariance emerged). We also show differential predictive validity. Team outcome efficacy was the strongest predictor of objective team performance, whereas team process efficacy was the best predictor of citizenship behaviours. Team potency predicted both outcomes, albeit more weakly. Collectively, the findings show the value of a more fine‐grained approach to teams' capability beliefs, including a new validated measure of team process efficacy. 相似文献
124.
Thompson BM Baratta MV Biedenkapp JC Rudy JW Watkins LR Maier SF 《Learning & memory (Cold Spring Harbor, N.Y.)》2010,17(11):591-599
Activation of the infralimbic region (IL) of the medial prefrontal cortex (mPFC) reduces conditioned fear in a variety of situations, and the IL is thought to play an important role in the extinction of conditioned fear. Here we report a series of experiments using contextual fear conditioning in which the IL is activated with the GABAa antagonist picrotoxin (Ptx) during a single extinction session in the fear context. We investigate the impact of this manipulation on subsequent extinction sessions in which Ptx is no longer present. First, we demonstrate that a single treatment with intra-IL Ptx administered in a conditioned fear context greatly accelerates the rate of extinction on the following days. Importantly, IL-Ptx also enhances extinction to a different fear context than the one in which IL-Ptx was administered. Thus, IL-Ptx primes extinction learning regardless of the fear context in which the IL was initially activated. Second, activation of the IL must occur in conjunction with a fear context in order to enhance extinction; the extinction enhancing effect is not observable if IL-Ptx is administered in a neutral context. Finally, this extinction enhancing effect is specific to the IL for it does not occur if Ptx is injected into the prelimbic region (PL) of the mPFC. The results indicate a novel persisting control of fear induced by activation of the IL and suggest that IL activation induces changes in extinction-related circuitry that prime extinction learning. 相似文献
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127.
Adverse impact evaluations often call for evidence that the disparity between groups in selection rates is statistically significant, and practitioners must choose which test statistic to apply in this situation. To identify the most effective testing procedure, the authors compared several alternate test statistics in terms of Type I error rates and power, focusing on situations with small samples. Significance testing was found to be of limited value because of low power for all tests. Among the alternate test statistics, the widely-used Z-test on the difference between two proportions performed reasonably well, except when sample size was extremely small. A test suggested by G. J. G. Upton (1982) provided slightly better control of Type I error under some conditions but generally produced results similar to the Z-test. Use of the Fisher Exact Test and Yates's continuity-corrected chi-square test are not recommended because of overly conservative Type I error rates and substantially lower power than the Z-test. 相似文献
128.
We investigated the social implications of signing an informed consent form (ICF) on participant behavior. ICF research fails to consider that the decision to participate in research is a process that occurs in a social and cultural context. Understanding the meaning of giving consent in this social context is critical. In separate experiments, we found significantly greater agreement to return to complete a study and persistence at a task in participants who signed the ICF versus those who did not. Signing the ICF may be putting participants at risk of induced compliance with study protocols, rather than empowering them to withhold consent or withdraw. Future research should investigate the psychosocial factors affecting participants' decision making in the informed consent process. 相似文献
129.
Karen E. Dill Brian P. Brown Michael A. Collins 《Journal of experimental social psychology》2008,44(5):1402-1408
The violent video game literature has previously not extended to the domain of violence against women. The current investigation tested the effects of exposure to sex-typed video game characters versus images of professional men and women on judgments and attitudes supporting aggression against women. Results showed experimental effects of short-term exposure to stereotypical media content on sexual harassment judgments but not on rape myth acceptance. A significant interaction indicated that men exposed to stereotypical content made judgments that were more tolerant of a real-life instance of sexual harassment compared to controls. Long-term exposure to video game violence was correlated with greater tolerance of sexual harassment and greater rape myth acceptance. This data contributes to our understanding of mass media’s role in socialization that supports violence against women. 相似文献
130.
J. Collins 《Synthese》2006,153(1):69-104
Prinz (Perceptual the Mind: Concepts and Their Perceptual Basis, MIT Press, 2002) presents a new species of concept empiricism,
under which concepts are off-line long-term memory networks of representations that are ‘copies’ of perceptual representations
– proxytypes. An apparent obstacle to any such empiricism is the prevailing nativism of generative linguistics. The paper critically assesses
Prinz’s attempt to overcome this obstacle. The paper argues that, prima facie, proxytypes are as incapable of accounting for
the structure of the linguistic mind as are the more traditional species of empiricism. This position is then confirmed by
looking in detail at two suggestions (one derived from recent connectionist research) from Prinz of how certain aspects of
syntactic structure might be accommodated by the proxytype theory. It is shown that the suggestions fail to come to terms
with both the data and theory of contemporary linguistics. 相似文献