急性心理性应激对自我参照记忆的影响

已有研究表明急性心理性应激会导致个体的自传体记忆受损,然而急性心理性应激如何影响个体加工当前的自我相关信息,还没有研究结论,本研究旨在丰富和拓展这一领域的研究,从而更加全面深入的了解急性心理性应激对自我相关信息的影响。本研究将自我参照记忆的R/K(记得/知道)范式与特里尔社会应激测试(Trier Social Stress Test:TSST)相结合,考察59名处在不同急性心理性应激状态下的被试自我参照记忆的成绩。结果发现高应激反应组自我参照的R回忆率值显著低于低应激反应组,研究结果发现,被试在特里尔社会应激测试过程中的急性心理性应激反应越强,自我参照的R回忆率越低。结果表明急性心理性应激会抑制个体对当前自我相关信息的加工,削弱了自我参照记忆。

Effect of Acute Psychosocial Stress on the Serf-referential Memory

Previous studies had found that acute psychosocial stress would impair the retrieval of the autobiographical memory. However, they rarely investigated the effect of acute psychosocial stress on the self-referential memory. So the current study was aimed to broaden this field.Fifty-nine participants were random divided into high stress group and low stress group by mean split of their heart rates responses during the stage of TSST (Trier Social Stress Test), which resulted a final dataset of thirty-two participants in the high stress group and twenty-seven participants in the low stress group. All participants finished the self-referential memory task in which participants were asked to judge whether some adjectives were appropriate to describe the self, mother and a celebrity (e.g., Lu Xun) and then were asked to recognize whether some adjectives were old or new. If participants judged an item to be an old item, they would further asked to make an R/K judgment by indicating whether ‘remembering’ (consciously recollect specific details of the item at the time it was presented, ‘R score’) or simply ‘knowing’ (feel familiar, but participants were unable to recollect details of its prior list, ‘K score’). Results showed that the recognition accuracy of R-response for self-relevance condition was higher in low stress group than that in high stress group. Further, participants' heart rates during the stage of TSST were negatively correlated with their recognition accuracy of R-response for self-relevance condition. Our findings indicate that stress-induced decreased the recognition of the self-relevance traits.