Pletzer Belinda, M Ortner Tuulia
Department of Psychology, University of Salzburg, Salzburg, Austria; Centre for Cognitive Neuroscience, University of Salzburg, Salzburg, Austria.
Department of Psychology, University of Salzburg, Salzburg, Austria.
Biol Psychol. 2016 Sep;119:46-53. doi: 10.1016/j.biopsycho.2016.06.012. Epub 2016 Jul 1.
Personality assessment has been challenged by the fact that different assessment methods (implicit measures, behavioral measures and explicit rating scales) show little or no convergence in behavioral studies. In this neuroimaging study we address for the first time, whether different assessment methods rely on separate or overlapping neuronal systems. Fifty nine healthy adult participants completed two objective personality tests of risk propensity: the more implicit Balloon Analogue Risk Task (BART) and the more explicit Game of Dice Task (GDT). Significant differences in activation, as well as connectivity patterns between both tasks were observed. In both tasks, risky decisions yielded significantly stronger activations than safe decisions in the bilateral caudate, as well as the bilateral Insula. The finding of overlapping brain areas validates different assessment methods, despite their behavioral non-convergence. This suggests that neuroimaging can be an important tool of validation in the field of personality assessment.
不同的评估方法（内隐测量、行为测量和外显评定量表）在行为研究中显示出很少或几乎没有趋同性，这一事实对人格评估提出了挑战。在这项神经影像学研究中，我们首次探讨了不同的评估方法是依赖于独立的还是重叠的神经元系统。59名健康成年参与者完成了两项关于风险倾向的客观人格测试：更具内隐性的气球模拟风险任务（BART）和更具外显性的掷骰子任务（GDT）。观察到两项任务在激活以及连接模式上存在显著差异。在两项任务中，与安全决策相比，冒险决策在双侧尾状核以及双侧脑岛中均产生了显著更强的激活。尽管行为上缺乏趋同性，但重叠脑区的发现验证了不同的评估方法。这表明神经影像学可以成为人格评估领域中一种重要的验证工具。
