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The time it takes to truly know someone: Neurophysiological correlates of face and identity learning during the first two years

Popova, Tsvetomila; Wiese, Holger

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Abstract

How long does it take to truly know a person? To answer this question, we investigated how event-related brain potential (ERP) correlates of facial familiarity (N250) and the integration of identity-specific knowledge (Sustained Familiarity Effect, SFE) develop over time. Sixty undergraduate students from three year groups were tested with images of a university friend (with two, 14, and 26 months of familiarity for Year 1, Year 2, and Year 3 students), a highly familiar friend from home, and an unfamiliar identity. While clear ERP familiarity effects for home friends were observed in all groups, university friends yielded a clear N250 effect but only a small SFE in Year 1. Importantly, both effects significantly increased for university friends from Year 1 to Year 2, but not afterwards. Our results demonstrate that neural representations of visual familiarity and identity-specific knowledge build up over time and are fully developed by 14 months of familiarity.

Citation

Popova, T., & Wiese, H. (2022). The time it takes to truly know someone: Neurophysiological correlates of face and identity learning during the first two years. Biological Psychology, 170, Article 108312. https://doi.org/10.1016/j.biopsycho.2022.108312

Journal Article Type Article
Acceptance Date Mar 9, 2022
Online Publication Date Mar 12, 2022
Publication Date 2022-04
Deposit Date Mar 14, 2022
Publicly Available Date Aug 17, 2022
Journal Biological Psychology
Print ISSN 0301-0511
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 170
Article Number 108312
DOI https://doi.org/10.1016/j.biopsycho.2022.108312

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