Xia Ruixue, Shao Honghong, Cui Lili, Zhang Peiying, Xue Junwei, Zhou Aibao, Li Shifeng
School of Psychology, Northwest Normal University, Lanzhou, China; Key Laboratory of Behavioral and Mental Health of Gansu Province, Lanzhou, China.
School of Psychology, Northwest Normal University, Lanzhou, China; Key Laboratory of Behavioral and Mental Health of Gansu Province, Lanzhou, China.
Neurosci Lett. 2021 Jan 23;744:135625. doi: 10.1016/j.neulet.2021.135625. Epub 2021 Jan 6.
Previous studies studies indicate that individuals tend to integrate positive information into their self-concept. However, whether such self-positivity bias would still be observed without an explicit self-related cue is unknown. In the present study, 29 participants were asked to evaluate a series of positive and negative trait adjectives, after the participants were presented with their own name or another name subliminally. During the task, their electroencephalograms were recorded. The results showed participants responded faster to positive traits than to negative traits in the self-name cue conditions. In addition, both the latencies and the amplitudes of the N400 showed significant interaction between name-cue and valence in N400 (240-440 ms) amplitudes. The earlier N400 latencies and smaller N400 amplitudes were associated with positive traits in the self-name cue. These results suggested that the self-positivity bias can also be observed in a subliminally presenting self-cue, indicating the robustness of self-positivity bias.
以往的研究表明，个体倾向于将积极信息整合到他们的自我概念中。然而，在没有明确的自我相关线索的情况下，这种自我积极偏见是否仍然会被观察到尚不清楚。在本研究中，29名参与者在被阈下呈现自己的名字或另一个名字后，被要求对一系列积极和消极的特质形容词进行评价。在任务过程中，记录他们的脑电图。结果显示，在自我名字线索条件下，参与者对积极特质的反应比对消极特质的反应更快。此外，N400的潜伏期和波幅在N400（240 - 440毫秒）波幅上显示出名字线索和效价之间的显著交互作用。在自我名字线索中，较早的N400潜伏期和较小的N400波幅与积极特质相关。这些结果表明，在阈下呈现自我线索时也能观察到自我积极偏见，这表明自我积极偏见具有稳健性。
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