Within-family cogPGS effect on crystallized intelligence was roughly half the between-family effect, indicating passive genotype-environment correlation¶

Claim · All claims
Evidence · 1 study · causal r2 · q2
Currency · newest study 2022 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q2 i? For cIQ the within-family cogPGS effect (βw = 0.08) was roughly half the between-family effect (βB = 0.15); for fIQ only the within-family effect was significant; for WM neither was significant. → Nicholas Judd 2022

Evidence¶

Nicholas Judd 2022¶

Nicholas Judd, Bruno Sauce and Torkel Klingberg. (2022). Schooling substantially improves intelligence, but neither lessens nor widens the impacts of socioeconomics and genetics. npj Science of Learning. https://doi.org/10.1038/s41539-022-00148-5

q2 · i? · causal · r2

Post hoc sibling analysis (families = 392, n = 792) estimating within- and between-family cogPGS effects. The authors attribute the null fIQ and WM findings to limited statistical power from only 392 families.

"We found cIQ's within-family effect ( βw = 0.08, pFDR = 0.009) to be roughly half of the between-family effect ( βB = 0.15, pFDR = 0.009)."

Discussion¶

Related Claims¶

• Schooling showed no significant interaction with cogPGS or SES on any intelligence domain, and Bayesian ROPE analysis found interaction effects under 0.05 SD with 95% probability — related
• CogPGS and SES each showed large, independent, positive effects on all three intelligence domains — related