Abstract

IntroductionAlthough social anxiety symptoms and exposure to maternal major depressive disorder (MDD) have each been conceptualized as key contributors to the development of depression symptoms in youth, these risk factors have not been integrated into a single model of risk. The current study evaluated a two-hit model of risk to determine whether the impact of social anxiety on prospective changes in youth depressive symptoms is stronger among youth exposed to maternal MDD than among those of never-depressed mothers. MethodsParticipants were youth (aged 8–14 at baseline, 50.4% girls, 80.9% Caucasian) and their biological mothers recruited from the community in the United States. Of the mothers, 129 had a history of MDD during their youth's lifetime and 117 had no lifetime history of MDD. At the initial assessment, mothers completed diagnostic interviews and youth completed self-report measures of social anxiety and depressive symptoms. Participants were reassessed every 6 months for 2 years during which youth again completed the symptom measures. ResultsResults of hierarchical linear modeling revealed that levels of social anxiety predicted prospective increases in depressive symptoms among offspring of mothers with a history of MDD, but not among those of never-depressed mothers. Depressive symptoms did not predict prospective changes in social anxiety (alone or in interaction with maternal MDD). ConclusionsThese results provide preliminary evidence for an integrated model of risk such that social anxiety symptoms may be a particularly strong risk factor for the subsequent development of depression symptoms among youth with exposure to maternal MDD.

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