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MINE IS BIGGER THAN YOURS! NARCISSISM PREDICTS BIASES IN PERCEIVED HEAD SIZE

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Lyons M., Blinkhorn V., Collier E. S., Bertamini M.

Studia Psychologica

2019

vol. 61

issue 4

245 – 257

The expression big headed is often used to describe narcissists, however is it possible that this term signals a bias in how narcissists perceive themselves? We tested whether narcissistic traits predicted biases in the estimated size and weight of specific body parts, including head circumference and brain weight. In two questionnaire-based studies, participants estimated the size or weight of parts of their body. In Study 1 (n = 316), we found that the Leadership/Authority facet of narcissism significantly predicted greater estimates of head circumference in men, but lower estimates of head circumference in women. In Study 2 (n = 275), we found that when a sex-specific average head circumference was not provided, Leadership/Authority predicted greater estimates of head circumference overall. We present evidence that narcissism predicts biases in estimated head size and brain weight, but that the precise nature of these biases is dependent on the provided frame of reference for body size. These results are discussed with reference to within-sex competitive strategies, perceived intelligence and stereotypes for male and female attractiveness.

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1 Studia Psychologica

1 Bertamini M.

1 Blinkhorn V.

1 Collier E. S.

1 Lyons M.

1 2019

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MINE IS BIGGER THAN YOURS! NARCISSISM PREDICTS BIASES IN PERCEIVED HEAD SIZE