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Although the influence of stereotype threat (ST) on working self-concepts has been highlighted in recent years, its neural underpinnings are unclear. Notably, the aging ST, which largely influences older adults’ cognitive ability, mental and physical health, did not receive much attention. In order to investigate these issues, electroencephalogram (EEG) data were obtained from older adults during a modified Stroop task using neutral words, positive and negative self-concept words in aging ST vs. neutral control conditions. Results showed longer reaction times (RTs) for identifying colors of words under the aging ST compared to the neutral condition. More importantly, the negative self-concept elicited more positive late P300 amplitudes and enhanced theta band activities compared to the positive self-concept or neutral words under the aging ST condition, whereas no difference was found between these self-concepts and neutral words in the control condition. Furthermore, the aging ST induced smaller theta band synchronization and enhanced alpha band synchronization compared to the control condition. Moreover, we also observed valence differences in self-concepts where the negative self-concept words reduced early P150/N170 complex relative to neutral words. These findings suggest that priming ST could activate negative self-concepts as current working self-concept, and that this influence occurred during a late neural time course.

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Abstract. Previous research has suggested that power undermines cooperation in social dilemmas. However, the story may not be so simple. Guided by recent findings that power heightens sensitivity to unfairness, we examined the moderating effect of distributive justice on the association between power and cooperation. Across two experiments, when treated unfairly, high-power (vs. low-power) participants perceived greater unfairness. Moreover, high-power (vs. low-power) participants behaved less cooperatively not only when they interacted with the offender who treated them unfairly (Experiment 1), but also when they interacted with innocent third parties (Experiment 2). However, high-power and low-power participants showed no difference in perceived fairness and cooperation when treated fairly. These findings shed light on the association between power and cooperation by suggesting the modulating role of distributive justice, and they remind us that researchers should take participants’ personal sense of power into account when manipulating fairness.

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