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Gender differences in individual variation in academic grades fail to fit expected patterns for STEM
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Gender differences in individual variation in academic grades fail to fit expected patterns for STEM
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Journal Article
Gender differences in individual variation in academic grades fail to fit expected patterns for STEM
2018
Overview
Fewer women than men pursue careers in science, technology, engineering and mathematics (STEM), despite girls outperforming boys at school in the relevant subjects. According to the ‘variability hypothesis’, this over-representation of males is driven by gender differences in variance; greater male variability leads to greater numbers of men who exceed the performance threshold. Here, we use recent meta-analytic advances to compare gender differences in academic grades from over 1.6 million students. In line with previous studies we find strong evidence for lower variation among girls than boys, and of higher average grades for girls. However, the gender differences in both mean and variance of grades are smaller in STEM than non-STEM subjects, suggesting that greater variability is insufficient to explain male over-representation in STEM. Simulations of these differences suggest the top 10% of a class contains equal numbers of girls and boys in STEM, but more girls in non-STEM subjects.
Men are over-represented in the STEM (science, technology, engineering and mathematics) workforce even though girls outperform boys in these subjects at school. Here, the authors cast doubt on one leading explanation for this paradox, the ‘variability hypothesis’.
Publisher
Nature Publishing Group UK,Nature Publishing Group,Nature Portfolio
Subject
/ 706/689
/ Academic Performance - statistics & numerical data
/ Adult
/ Child
/ Engineering - statistics & numerical data
/ Female
/ Girls
/ Humanities and Social Sciences
/ Humans
/ Male
/ Mathematics - statistics & numerical data
/ Science
/ Students - statistics & numerical data
