Social Neuroscience Laboratory, Department of Psychological and Brain Sciences, University of Delaware, Newark, DE 19716, USA.
Soc Cogn Affect Neurosci. 2018 Sep 4;13(7):719-740. doi: 10.1093/scan/nsy043.
Stress engendered by stereotype threatening situations may facilitate encoding of negative, stereotype confirming feedback received during a performance among women in science, technology, engineering and mathematics (STEM). It is unclear, however, whether this process is comprised of the same neurophysiological mechanisms evident in any emotional memory encoding context, or if this encoding bias directly undermines positive self-perceptions in the stigmatized domain. A total of 160 men and women completed a math test that provided veridical positive and negative feedback, a memory test for feedback, and math self-enhancing and valuing measures in a stereotype threatening or neutral context while continuous electroencephalography activity and startle probe responses to positive and negative feedback was recorded. Indexing amygdala activity to feedback via startle responses and emotional memory network connectivity elicited during accurate recognition of positive and negative feedback via graph analyses, only stereotype threatened women encoded negative feedback better when they exhibited increased amygdala activity and emotional memory network connectivity in response to said feedback. Emotional memory biases, in turn, predicted decreases in women's self-enhancing, math valuing and performance. Findings provide an emotional memory encoding-based mechanism for well-established findings indicating that women have more negative math self-perceptions compared with men regardless of actual performance.
刻板印象威胁情境所产生的压力可能会促进女性在科学、技术、工程和数学(STEM)领域的表现中对负面的、符合刻板印象的反馈进行编码。然而,目前尚不清楚这一过程是否包含任何情绪记忆编码背景中明显存在的相同神经生理机制,或者这种编码偏差是否直接破坏了被污名化领域的积极自我认知。共有 160 名男性和女性在刻板印象威胁或中性情境下完成了一项数学测试,该测试提供了真实的正反馈和负反馈、对反馈的记忆测试,以及数学自我增强和重视措施,同时记录了连续的脑电图活动和对正反馈和负反馈的惊跳探测反应。通过惊吓反应索引杏仁核活动以反馈,并通过图形分析在准确识别正反馈和负反馈时引出情绪记忆网络连通性,只有在对反馈表现出更高的杏仁核活动和情绪记忆网络连通性时,受到刻板印象威胁的女性才能更好地对负反馈进行编码。情绪记忆偏差反过来又预测了女性自我增强、重视数学和表现的下降。这些发现为已经确立的发现提供了一种基于情绪记忆编码的机制,即无论实际表现如何,女性对数学的自我认知都比男性更消极。