Dawel Amy, McKone Elinor, O'Kearney Richard, Sellbom Martin, Irons Jessica, Palermo Romina
ARC Centre of Excellence in Cognition and its Disorders.
Research School of Psychology.
Personal Disord. 2015 Jul;6(3):216-228. doi: 10.1037/per0000108. Epub 2015 Feb 23.
Three theoretical explanations for the affective facet of psychopathy were tested in individuals with high levels of callous unemotional (CU) traits. Theory 1 (Blair) proposes specific difficulties in processing others' distress (particularly fear). Theory 2 (Dadds) argues for lack of attention to the eyes of faces. Theory 3 (Newman) proposes enhanced selective attention. The theories make contrasting predictions about how CU traits would affect cueing of attention from eye-gaze direction in distressed (i.e., fearful) faces; eye-gaze direction in nondistressed (i.e., happy, neutral) faces; and nonsocial stimuli (arrows). High CU adults (n = 33) showed reduced attentional cueing compared with low CU adults (n = 75) equally across all conditions (eye-gaze in distressed and nondistressed faces, arrows). The high CU group's ability to suppress following of eye-gaze emerged with practice while the low CU group showed no such reduction in gaze-cueing with practice. Overall accuracy and RTs were not different for the low and high CU groups indicating equivalent task engagement. Results support an enhanced selective attention account-consistent with Newman and colleagues' Response Modulation Hypothesis--in which high CU individuals are able to suppress goal-irrelevant social and nonsocial information. The current study also provides novel evidence regarding the nature of gaze-following by tracking practice effects across blocks. While supporting the common assumption that following of gaze is typically mandatory, the results also imply this can be modified by individual differences in personality.
针对具有高度无情无感(CU)特质的个体,对精神病态情感方面的三种理论解释进行了测试。理论1(布莱尔)提出在处理他人痛苦(尤其是恐惧)方面存在特定困难。理论2(达兹)认为是缺乏对面部眼睛的关注。理论3(纽曼)提出增强的选择性注意。这些理论对于CU特质如何影响来自痛苦(即恐惧)面孔的目光注视方向、非痛苦(即快乐、中性)面孔的目光注视方向以及非社会性刺激(箭头)所引发的注意提示做出了不同预测。与低CU成年人(n = 75)相比,高CU成年人(n = 33)在所有条件下(痛苦和非痛苦面孔中的目光注视、箭头)的注意提示均减少。高CU组抑制跟随目光注视的能力随着练习而出现,而低CU组在练习后目光提示没有这种减少。低CU组和高CU组的总体准确性和反应时间没有差异,表明任务参与程度相当。结果支持了一种增强的选择性注意解释——与纽曼及其同事的反应调节假说一致——即高CU个体能够抑制与目标无关的社会和非社会信息。本研究还通过跟踪各块之间的练习效果,提供了关于目光跟随本质的新证据。虽然支持目光跟随通常是强制性的这一普遍假设,但结果也表明这可以因个体人格差异而改变。