Teacher-rated self-control and grit jointly explain 28.4% of the variance in school performance in standard phenotypic regression¶

Claim · All claims
Evidence · 1 study · associational r3 · q3
Currency · newest study 2023 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q3 i? In phenotypic regression of teacher ratings, self-control and grit explained 28.4% of school performance variance (R2 = 0.284). → Kevenaar 2023

Evidence¶

Kevenaar 2023¶

Kevenaar, S. T., van Bergen, E., Oldehinkel, A. J., Boomsma, D. I. & Dolan, C. V. (2023). The relationship of school performance with self-control and grit is strongly genetic and weakly causal. npj Science of Learning, 8:53. https://doi.org/10.1038/s41539-023-00198-3

q3 · i? · associational · r3

Phenotypic regression model (Model 1) fitted in OpenMx to teacher ratings of 8728 twin children, correcting for family clustering, sex, SES, and rater. The regression coefficients equalled "b SP,SC = 0.191" and "b SP,Grit = 0.331".

"we found that self-control and grit explained 28.4% of the variance in school performance (R2 = 0.284)"

Discussion¶

Learner Variables¶

• Personality Traits — predictor: learners who differ on it differ in outcomes

Related Claims¶

• Direct causal effects of self-control and grit account for only 4.4% of school performance variance, with self-control the stronger causal predictor — related
• Twin correlations indicate genetic influences on self-control, grit, and school performance, with cross-trait cross-twin correlations higher in MZ than DZ twins — related