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It is well known that different person have specific psychological meaning to us. We usually feel more positive to intimates kin than relatively non-intimate ones non-kin. However, until recently, the underlying mechanism about kinship remains poorly understood. Thus, we further investigated whether the degree of kinship between a perceiver and a target person leads to the perceiver’s specific electrophysiological response. Event-related brain potentials ERPs of 22 participants age: 20.8 ± 2.13 were observed when changed the degree of kinship father, uncle, acquaintance in morally laden scenarios. Our results demonstrated that the amplitudes of neural response varied among kins and acquaintance. Specifically, fronto-central positive activity at 180 - 230 ms P2 and central-parietal late positive activity at 350 - 500 ms LPC were of larger mean amplitude in response to father than to uncle and acquaintance, which are indicative of intense information processing and sensitivity to a lineal relative in moral cognitive context. Those findings showed direct evidences of consanguineous bias in moral-related contexts, which will provide valuable reference for intervention of tensioned relationship and other related disorders.


Kinship Bias, Morally Laden Scenario, P2, N2, LPC, ERPs

Cite this paper

Zou, X. and Yan, Z. 2017 Sensitivity to Kinship: From Electrophysiological Perspective. Open Journal of Social Sciences, 5, 70-81. doi: 10.4236-jss.2017.52008.

Autor: Xia Zou1, Zhixiong Yan2*



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