marginally significantp = 0.052
The interaction effect (paternal parenting similarity × temperament similarity) on Time 2 positive sibling relationship quality was significant (β = 0.109 and p = 0.031) for older siblings (Model 3, AIC = 327.836, BIC = 661.230, and SSABIC = 306.822) and marginally significant for younger siblings (β = 0.056, p = 0.052; Model 4, AIC = 686.440, BIC = 1019.834, and SSABIC = 665.426).