Note. There was a significant correlation between Affective Mutuality (mean of mean-centered 15- & 18-month ratings) and Empathy (mean of standardized 24- & 30-month ratings) for children with the GG rs53576 genotype, r(35) = .37, p = .02, but not for children with at least one A allele, r(39) = -.03, p = .87.