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Jordan Belisle Kelti Owens Mark R. Dixon Albert Malkin Sam D. Jordan 《Journal of applied behavior analysis》2017,50(2):413-417
Twenty‐three university students completed a simulated slot machine task involving the concurrent presentation of two slot machines that were varied both in win density and the inclusion of a bonus round feature to evaluate the effect of embedded bonus rounds on participant response allocation. The results suggest that participants allocated a greater percentage of responses to machines with embedded bonus rounds across both dense (Bonus: M = 68.4, SD = 19.2; No Bonus: M = 51.2; 9.6) and lean (Bonus: M = 48.8, SD = 9.6; No Bonus: M = 31.6, SD = 19.2) reinforcement schedules, in which the overall reinforcement rate across all machines was held constant. 相似文献
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Student evaluations of the quality of their women's and gender studies (WGS) experience and predictors of experience quality were studied in a sample of 326 students from 23 WGS classes. Higher initial appreciation/acceptance of diversity, capacity for interpersonal relationships, and class expectations predicted more positive experience ratings. These relationships were mediated by students' alliance with their teacher and cohesion with classmates. A small proportion of students (11.6%), spread across 14 classes, did not rate their experience positively. Perceptions of teacher and classmate intolerance and bias were assessed in this subset of students. Average ratings of intolerance were slightly positive for teachers and neutral for classmates. Implications of the findings for understanding students' WGS experiences are discussed. 相似文献
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Executive function in paediatric medulloblastoma: The role of cerebrocerebellar connections
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Nicole Law Mary Lou Smith Mark Greenberg Eric Bouffet Michael D. Taylor Suzanne Laughlin David Malkin Fang Liu Iska Moxon‐Emre Nadia Scantlebury Donald Mabbott 《Journal of Neuropsychology》2017,11(2):174-200
Executive functions (EFs) are involved in the attainment, maintenance, and integration of information; these functions may play a key role in cognitive and behavioural outcomes in children treated for medulloblastoma (MB). At present, it remains unclear which EFs are most sensitive to the treatment effects for MB and whether damage to cerebrocerebellar circuitry is associated with EF. We completed a comprehensive evaluation of EF in 24 children treated for MB and 20 age‐matched healthy children (HC) and distilled these measures into components. Six components (C1–C6) were extracted from our model, reflecting dissociable constructs of EF: C1 = cognitive efficiency; C2 = planning/problem‐solving; C3 = positive cognitive emotion regulation; C4 = working memory; C5 = negative cognitive emotion regulation; and C6 = mixed cognitive emotion regulation. Group differences were found for C1, C2, C3, and C4; the MB group showed poorer performance on EF tasks and made less use of positive cognitive emotion regulation strategies relative to HC. Compromise to cerebrocerebellar microstructure – cerebro‐ponto‐cerebellar and cerebello‐thalamo‐cerebral pathways – was evident in children treated for MB compared to HC. We found that cerebrocerebellar circuitry has a mediating effect on one component of EF following treatment for MB – working memory. 相似文献
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Mallory L. Malkin Virgil Zeigler‐Hill Christopher T. Barry Ashton C. Southard 《Journal of personality》2013,81(1):1-15
Previous studies have found that narcissistic individuals are often viewed negatively by those who know them well. The present study sought to extend these previous findings by examining whether normal and pathological aspects of narcissism were associated with perceiver ratings of narcissistic characteristics and aggression. This was accomplished by having each of our undergraduate participants (288 targets) recruit friends or family members to complete ratings of the target who recruited them (1,296 perceivers). Results revealed that perceived entitlement was strongly associated with perceived aggression. Further, self‐reported levels of pathological narcissism moderated these results such that vulnerable narcissism exacerbated the association between perceived entitlement and aggression, whereas grandiose narcissism mitigated the association. The discussion will focus on the implications of these results for understanding the various features of narcissism. 相似文献