Fig. 2: Genetic effects on music reward sensitivity are partly separate from music perceptual abilities and general reward sensitivity.

a Cholesky decomposition of the significant contributions to music reward sensitivity; note that the environmental path from music perceptual abilities to music reward sensitivity is not significant, indicating only overlapping genetic causes (see Supplementary Fig. 5 for the complete path-diagram). Estimates under the square root represent the phenotypic variance explained by the respective variance components. Model estimates are provided as Source Data. b Variance decomposition shows that genetic factors (A) explain individual differences in music reward sensitivity (in orange) well beyond shared genetic factors associated with general perceptual and affective processes (in red and yellow, respectively). Environmental factors (E) that contribute significantly to music reward sensitivity in green and turquoise. Notes on structural equation models: one-headed arrow represents regression paths partitioned in additive genetic and non-common environmental paths; greyed one-headed arrows represent non-significant paths. Other abbreviations and symbols are as in Fig. 1.