4.5 Article

Maternal Response to Positive Affect Moderates the Impact of Familial Risk for Depression on Ventral Striatal Response to Winning Reward in 6-to 8-Year-Old Children

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DOI: 10.1016/j.bpsc.2021.12.014

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  1. National Institute of Mental Health [K01MH099220]

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Offspring of depressed parents show reduced neural response to winning reward in the ventral striatum. Neural reward alterations may emerge earlier than expected, as early as 6-8 years old, particularly in the context of maternal discouragement of child positive emotion. Clinical interventions that focus on coaching mothers to encourage child positive emotions could support child reward-related brain development.
BACKGROUND: A growing body of research has demonstrated that adolescent offspring of depressed parents show diminished responding in the ventral striatum to reward. More recent work has suggested that altered reward responding may emerge earlier than adolescence in offspring at familial risk for depression, although factors associated with neural alterations in childhood remain poorly understood. METHODS: We tested whether 6- to 8-year-old children, 49% at heightened risk for depression via maternal history, showed altered neural responding to winning reward. We evaluated whether maternal socialization of positive emotion moderated the association between familial risk and child neural response to reward. Participants were 49 children 6 to 8 years of age (24 with a maternal history of recurrent or chronic depression, 25 with no maternal history of any psychiatric disorder). Children underwent functional magnetic resonance imaging while completing the Doors Guessing Task, a widely used reward guessing task. Mothers reported their use of encouraging and dampening responses to child positive affect. RESULTS: Findings demonstrated that children at high familial risk for depression showed lower ventral striatum responding to winning reward relative to low-risk children, but only when mothers used less encouragement or greater dampening responses to their child's positive emotion expressions. CONCLUSIONS: Neural reward alterations in the ventral striatum may emerge earlier than previously thought, as early as 6 to 8 years of age, specifically in the context of maternal discouragement of child positive emotions. Clinical interventions that focus on coaching mothers on how to encourage child positive emotions may be beneficial for supporting child reward-related brain development.

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