Socioeconomic status modifies the sex difference in spatial skill

Area of Science:

• Cognitive Development
• Developmental Psychology
• Neuroscience

Background:

• Prior research often assumes a universal male advantage in spatial skills.
• This advantage is frequently attributed to inherent population-level ability differences between sexes.
• The influence of environmental factors, such as socioeconomic status (SES), on this sex difference is less understood.

Purpose of the Study:

• To investigate if the male advantage in spatial skills differs across children from varying socioeconomic status (SES) backgrounds.
• To challenge the assumption of a uniform male spatial advantage in the general population.
• To explore the implications of SES on sex-related differences in spatial abilities.

Main Methods:

• A longitudinal study tracking children across second and third grades.
• Administration of two spatial tasks involving mental transformations.
• Inclusion of a syntax comprehension task to control for verbal abilities.
• Analysis of performance differences based on sex and socioeconomic status (SES).

Main Results:

• Boys from middle- and high-SES groups demonstrated superior performance on spatial tasks compared to girls.
• No significant sex differences in spatial task performance were observed among children from low-SES backgrounds.
• As anticipated, no sex-based differences emerged in the verbal comprehension task.

Conclusions:

• The male spatial advantage is contingent upon socioeconomic status (SES), challenging its universality.
• SES acts as a significant moderator in the development or expression of sex-related differences in spatial skills.
• Future explanations for sex differences in spatial ability must account for socioeconomic and environmental influences.