Torrents-Rodas David, Fullana Miquel A, Bonillo Albert, Andión Oscar, Molinuevo Beatriz, Caseras Xavier, Torrubia Rafael
Department of Psychiatry and Forensic Medicine, Institute of Neurosciences, School of Medicine, Universitat Autònoma de Barcelona, Catalonia, Spain.
Psychophysiology. 2014 Jul;51(7):697-705. doi: 10.1111/psyp.12213. Epub 2014 Mar 28.
We studied the temporal stability of individual differences in the acquisition and generalization of fear. Seventy-one participants were tested in two almost identical fear-acquisition and fear-generalization sessions (separated by 8 months). Acquisition and generalization were measured by the fear-potentiated startle, the skin conductance response, and online expectancies of the unconditioned stimulus. To control for the effects of previous experience, different stimuli were used for half of the participants in Session 2. Acquisition and generalization did not differ across sessions or as a function of the stimuli used in Session 2, and a significant proportion of individual differences in these processes was stable over time (generalizability coefficients ranged from 0.17 to 0.38). When the same stimuli were used, acquisition measures showed compromised stability. The results are discussed in terms of their theoretical and applied implications.
我们研究了恐惧习得与泛化中个体差异的时间稳定性。71名参与者在两个几乎相同的恐惧习得和恐惧泛化环节接受测试（间隔8个月）。通过恐惧增强惊吓反应、皮肤电反应以及对无条件刺激的在线预期来衡量习得和泛化。为控制先前经验的影响，在第二个环节中，一半参与者使用了不同的刺激。习得和泛化在各环节之间以及作为第二个环节中所使用刺激的函数时并无差异，并且这些过程中相当一部分个体差异随时间保持稳定（泛化系数范围为0.17至0.38）。当使用相同刺激时，习得测量显示稳定性受损。我们从理论和应用意义方面对结果进行了讨论。
