Emergence and Characterization of Sex Differences in Spatial Ability: A Meta-Analysis

TLDR

Sex differences in spatial ability are widely acknowledged, yet debate remains about their magnitude, nature, and age of onset. The study addresses three questions: the magnitude of sex differences in spatial ability, the specific spatial domains where differences occur, and the age at which they first appear. The authors employ a meta‑analysis of empirical studies to answer these questions. The meta‑analysis shows that sex differences exist in some spatial domains—large differences in mental rotation, smaller differences in spatial perception—and that these differences are present across the lifespan, highlighting links to broader gender differences.

Abstract

Sex differences in spatial ability are widely acknowledged, yet considerable dispute surrounds the magnitude, nature, and age of first occurrence of these differences. This article focuses on 3 questions about sex differences in spatial ability: What is the magnitude of sex differences in spatial ability? On which aspects of spatial ability are sex differences found? and When, in the life span, are sex differences in spatial ability first detected? Implications for clarifying the linkage between sex differences in spatial ability and other differences between males and females are discussed. We use meta-analysis, a method for synthesizing empirical studies, to investigate these questions. Results of the meta-analysis suggest that sex differences arise on some types of spatial ability but not others, that large sex differences are found only on measures of mental rotation, that smaller sex differences are found on measures of spatial perception, and that, when sex differences are found, they can be detected across the life span.