Males show a small but significant advantage on WISC crystallized intelligence (gC, d = 0.14), driven mainly by the Information subtest¶

Claim · All claims
Evidence · 1 study (2 entries) · quant-synthesis r3 · q3 · i0 negligible
Currency · newest study 2022 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q3 i0 The pooled gC effect significantly favours males (d = 0.14), roughly 2 IQ points, independent of WISC version. → D. Giofrè · K. Allen · E. Toffalini · S. Caviola 2022 q3 i0 The Information subtest shows the largest gC difference favouring males (d = 0.26), while Similarities is non-significant. → D. Giofrè · K. Allen · E. Toffalini · S. Caviola 2022 (2)

Evidence¶

D. Giofrè · K. Allen · E. Toffalini · S. Caviola 2022¶

D. Giofrè · K. Allen · E. Toffalini · S. Caviola. (2022). The Impasse on Gender Differences in Intelligence: a Meta-Analysis on WISC Batteries. Educational Psychology Review. https://doi.org/10.1007/s10648-022-09705-1

q3 · i0 · quant-synthesis · r3

Meta-analysis of 41 studies (72 samples) for the gC factor; the standardization-sample estimate was virtually the same (d = 0.13), and the version moderator was not significant.

"The estimated mean effect size was significant but small, with higher scores in males than in females, d = 0.14 [0.08, 0.19], p < 0.001."

D. Giofrè · K. Allen · E. Toffalini · S. Caviola 2022 (2)¶

D. Giofrè · K. Allen · E. Toffalini · S. Caviola. (2022). The Impasse on Gender Differences in Intelligence: a Meta-Analysis on WISC Batteries. Educational Psychology Review. https://doi.org/10.1007/s10648-022-09705-1

q3 · i0 · quant-synthesis · r3

Subtest-level meta-analysis (Table 2) of gC subtests; Vocabulary (d = 0.138) and Comprehension (d = 0.096) were small but significant, Similarities was not significant.

"a notable discrepancy emerged between Information, which presented the largest estimated difference in favour of males, d = 0.26 [0.17, 0.36], and the other subtests, which presented very small to negligible estimated effect sizes"

Discussion¶

Related Claims¶

• Cognitive subdomains differ in association strength with SiN perception, from r = .18 (crystallized IQ, nonsignificant) to r = .39 (processing speed) — related
• Gender differences on WISC subtests and factors are generally smaller or unchanged with newer WISC versions, never larger — related
• Females outperform males on WISC processing speed (gS) with a medium advantage (d = -0.37), larger for Coding than Symbol search — related