Mothers' and fathers' emotion socialization (ES) practices have been widely associated with child socioemotional outcomes. To extend this research, we examined the bidirectional relationship between parent ES practices (supportive and non-supportive parenting) and internalizing behavior problems in children of Anglo and Latino parents. Participants were 182 mothers and 162 fathers and their children with or without intellectual disability (ID). We compared the stability of mother and father ES practices across child ages 4-8. We utilized cross-lagged panel modeling to examine the bidirectional relationship between parents' ES and child internalizing behavior problems. Emotion socialization practices differed across time by parent gender, with mothers displaying higher levels of supportive parenting and lower levels of non-supportive parenting than fathers. Cross-lagged panel models revealed differential relationships between child internalizing behaviors and emotion socialization practices by parent gender and by ethnicity. Implications for intervening with culturally diverse families of children with ID are discussed. (C) 2017 Elsevier Ltd. All rights reserved.