Horváth Klára, Martos János, Mihalik Béla, Bódizs Róbert
Institute of Behavioural Sciences, Semmelweis University, Budapest, Hungary.
Evol Psychol. 2011 Jun 17;9(2):244-56. doi: 10.1177/147470491100900211.
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.
我们的研究旨在检验社会大脑理论是否适用于人类个体差异。根据社会大脑理论，由于灵长类动物适应了更复杂的社会生活，相较于其体型预期，它们拥有更大的大脑。关于人类，心智理论与额叶和颞叶之间关系的研究较少。我们假设这些脑叶，以及整个大脑和新皮层与社交性人格维度相关，而社交性人格维度与个体的社会生活相关。如果我们控制体型差异和年龄的影响，我们的研究结果支持了这一假设，因为社交性与所研究的脑结构呈正相关。这些结果表明，社会大脑理论可以扩展到人类个体间差异，并且它们对人格心理学也有一些启示。
