Is the social brain theory applicable to human individual differences? Relationship between sociability personality dimension and brain size

Klára Horváth, János Martos, Béla Mihalik, Róbert Bódizs

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Our study intends to examine whether the social brain theory is applicable to human individual differences. According to the social brain theory primates have larger brains as it could be expected from their body sizes due to the adaptation to a more complex social life. Regarding humans there were few studies about the relationship between theory of mind and frontal and temporal brain lobes. We hypothesized that these brain lobes, as well as the whole cerebrum and neocortex are in connection with the Sociability personality dimension that is associated with individuals' social lives. Our findings support this hypothesis as Sociability correlated positively with the examined brain structures if we control the effects of body size differences and age. These results suggest that the social brain theory can be extended to human interindividual differences and they have some implications to personality psychology too.

Original languageEnglish
Pages (from-to)244-256
Number of pages13
JournalEvolutionary Psychology
Volume9
Issue number2
Publication statusPublished - Aug 2 2011

Keywords

  • Brain size
  • MRI
  • Sociability
  • Social brain theory
  • ZKPQ

ASJC Scopus subject areas

  • Social Psychology
  • Behavioral Neuroscience

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