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191.
Dotterer Hailey L. Burt S. Alexandra Klump Kelly L. Hyde Luke W. 《Journal of abnormal child psychology》2021,49(11):1431-1445
Research on Child and Adolescent Psychopathology - Callous-unemotional (CU) traits (i.e., callousness, low empathy, shallow affect) have been conceptualized as a downward extension of the... 相似文献
192.
Danielle S. Berke Jessica R. Carney Luke Rusowicz-Orazem Nora K. Kline Breanna Grunthal Jim Mintz Jeffrey S. Yarvis Alan L. Peterson Stacey Young-McCaughan Edna B. Foa Patricia A. Resick Brett T. Litz 《Behavior Therapy》2021,52(1):136-148
Aggressive behavior is prevalent among veterans of post-9/11 conflicts who have posttraumatic stress disorder (PTSD). However, little is known about whether PTSD treatments reduce aggression or the direction of the association between changes in PTSD symptoms and aggression in the context of PTSD treatment. We combined data from three clinical trials of evidence-based PTSD treatment in service members (N = 592) to: (1) examine whether PTSD treatment reduces psychological (e.g., verbal behavior) and physical aggression, and; (2) explore temporal associations between aggressive behavior and PTSD. Both psychological (Estimate = -2.20, SE = 0.07) and physical aggression (Estimate = -0.36, SE = 0.05) were significantly reduced from baseline to posttreatment follow-up. Lagged PTSD symptom reduction was not associated with reduced reports of aggression; however, higher baseline PTSD scores were significantly associated with greater reductions in psychological aggression (exclusively; ß = -0.67, 95% CI = -1.05, -0.30, SE = -3.49). Findings reveal that service members receiving PTSD treatment report substantial collateral changes in psychological aggression over time, particularly for participants with greater PTSD symptom severity. Clinicians should consider cotherapies or alternative ways of targeting physical aggression among service members with PTSD and alternative approaches to reduce psychological aggression among service members with relatively low PTSD symptom severity when considering evidence-based PTSD treatments. 相似文献
193.
Individual differences in working memory (WM) and executive control are stable, related to cognitive task performance, and clinically predictive. Between-participant differences in eye movements are also highly reliable (Carter & Luke, Journal of Experimental Psychology: Human Perception and Performance, 2018; Henderson & Luke, Journal of Experimental Psychology: Human Perception and Performance, 40(4), 1390–1400, 2014). However, little is known about how higher order individual differences in cognition are related to these eye-movement characteristics. In the present study, healthy college-age participants performed several individual difference tasks to measure WM span and executive control. Participants also performed three eye-movement tasks: reading, visual search, and scene viewing. Across all tasks, higher WM scores were related to reduced skewness in fixation duration distributions. In reading, higher WM scores predicted longer saccades. In scene viewing, higher WM scores predicted longer fixations. Theoretical and clinical implications of these findings are discussed. 相似文献
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Despite many observations of cooperation in nature, laboratory studies often fail to find careful coordination between individuals who are solving a cooperative task. Further, individuals tested are often naïve to cooperative tasks and there has been little exploration of partnerships with mixed expertise. In the current study, we examined acquisition of a cooperative pulling task in a group with both expert (N = 4) and novice (N = 11) chimpanzees (Pan troglodytes). We used five measures of competence and understanding: (1) success at the task, (2) latency to succeed, (3) efficiency, (4) uncoordinated pulling, and (5) pulling when a partner was present versus absent. We found that novices showed evidence of trial and error learning and developed competence over time, whereas the behavior of experts did not change throughout the course of the study. In addition to looking at patterns over time, we compared the performance of novices in this mixed-expertise group to an earlier study of novices in a group of all-novices. Novices in the mixed-expertise group pulled the same overall amount but for shorter periods of time, leading to higher pulling rates than individuals in the all-novice group. Taken together, these results suggest that learning in the presence of experts led to rapid and frequent success, although not necessarily careful coordination. 相似文献
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Yin Wu Eric Van Dijk Mike Aitken Luke Clark 《Cognitive, affective & behavioral neuroscience》2016,16(2):353-361
Loss aversion is a defining characteristic of prospect theory, whereby responses are stronger to losses than to equivalently sized gains (Kahneman & Tversky Econometrica, 47, 263–291, 1979). By monitoring electrodermal activity (EDA) during a gambling task, in this study we examined physiological activity during risky decisions, as well as to both obtained (e.g., gains and losses) and counterfactual (e.g., narrowly missed gains and losses) outcomes. During the bet selection phase, EDA increased linearly with bet size, highlighting the role of somatic signals in decision-making under uncertainty in a task without any learning requirement. Outcome-related EDA scaled with the magnitudes of monetary wins and losses, and losses had a stronger impact on EDA than did equivalently sized wins. Narrowly missed wins (i.e., near-wins) and narrowly missed losses (i.e., near-losses) also evoked EDA responses, and the change of EDA as a function of the size of the missed outcome was modestly greater for near-losses than for near-wins, suggesting that near-losses have more impact on subjective value than do near-wins. Across individuals, the slope for choice-related EDA (as a function of bet size) correlated with the slope for outcome-related EDA as a function of both the obtained and counterfactual outcome magnitudes, and these correlations were stronger for loss and near-loss conditions than for win and near-win conditions. Taken together, these asymmetrical EDA patterns to objective wins and losses, as well as to near-wins and near-losses, provide a psychophysiological instantiation of the value function curve in prospect theory, which is steeper in the negative than in the positive domain. 相似文献
199.
Timing in the vibrotactile modality was explored. Previous research has shown that repetitive auditory stimulation (in the form of click-trains) and visual stimulation (in the form of flickers) can alter duration judgements in a manner consistent with a “speeding up” of an internal clock. In Experiments 1 and 2 we investigated whether repetitive vibrotactile stimulation in the form of vibration trains would also alter duration judgements of either vibrotactile stimuli or visual stimuli. Participants gave verbal estimates of the duration of vibrotactile and visual stimuli that were preceded either by five seconds of 5-Hz vibration trains, or, by a five-second period of no vibrotactile stimulation, the end of which was signalled by a single vibration pulse (control condition). The results showed that durations were overestimated in the vibrotactile train conditions relative to the control condition; however, the effects were not multiplicative (did not increase with increasing stimulus duration) and as such were not consistent with a speeding up of the internal clock, but rather with an additive attentional effect. An additional finding was that the slope of the vibrotactile psychometric (control condition) function was not significantly different from that of the visual (control condition) function, which replicates a finding from a previous cross-modal comparison of timing. 相似文献
200.