The prediction of school achievement from a behavior genetic perspective: Results from the German twin study on Cognitive Ability, Self-Reported Motivation, and School Achievement (CoSMoS)

► We investigate the behavior genetics of academic achievement, domain-specific SPAs and CA. ► Results are based on cross-sectional data from the German twin study CoSMoS. ► We confirmed the significance of genetic influences for all three variables. ► Genetic correlations between the variables were substantial. ► SPAs (German, Math) correlate with academic achievement for reasons.