Maternal depression and children's false belief understanding

Children of depressed mothers show substantial social impairment, which increases their risk for developing depression. Theory of mind understanding forms the basis of social functioning, and is impaired in children of currently depressed mothers. Models of risk emphasize that a history of any maternal depression confers risk to later psychopathology. Therefore, we tested a novel model of the impact of lifetime maternal depression on children's false belief understanding that accounts for three primary factors that scaffold this understanding: maternal mental state talk, and children's executive functioning and language abilities. Children aged 41-48 months with a maternal lifetime history of major depressive disorder (MDD; n = 19) performed significantly more poorly on the false belief battery compared to those without (n = 44). Further, lower levels of mental state talk, child executive functioning, and child language ability were significantly associated with poorer false belief scores. However, the relation between maternal MDD and children's false belief performance was not mediated by any of these factors. These results indicate that maternal depression predicts poorer false belief understanding independently of other crucial scaffolding variables, and may be a social cognitive mechanism underlying the intergenerational transmission of depression.