Maternal Worry Socialization and Toddler Inhibited Temperament: Transactional Associations and Stability across Time.

Caregiver socialization of child emotions has consequences for both typical development and anxiety risk, with caregivers' non-supportive responses to worry perhaps especially salient to children's anxiety development. Children, in turn, impact the caregiving environment they receive through their temperament. We investigated transactional relations between maternal non-supportive responses to child worry (mother-reported) and two differently-measured child inhibited temperament indices (i.e., mother-perceived child inhibition to novelty, laboratory-observed child dysregulated fear) in a sample of 136 predominantly non-Hispanic, White mother-toddler dyads. Worry socialization and mother-reported inhibition to novelty were measured at each of three time points (toddler age 2, 3, 4 years), and dysregulated fear was measured at ages 2 and 3. Constructs showed stability across time, with effect sizes ranging from medium to large. Child inhibited temperament measures positively correlated within time point at ages 2 and 3, and laboratory-observed child dysregulated fear predicted mothers' later perceptions of their children's inhibition to novelty. At toddler age 2, mothers of children showing more dysregulated fear reported responding more non-supportively to worry. However, when controlling for one another, more mother-perceived child inhibition to novelty and less laboratory-observed child dysregulated fear at age 3 predicted mothers' greater non-supportive worry responses at child age 4. There was an indirect effect across time, such that children's greater laboratory-observed dysregulated fear predicted their mothers' heightened perceptions of inhibited temperament, which in turn predicted mothers' greater non-supportive worry responses. Findings lend support to anxiety-relevant construct stability in toddlerhood, as well as child-elicited, rather than parent-elicited, associations across time.