Relations of Maternal Borderline Personality Disorder Features With Preschooler Executive Functioning and Theory of Mind.

Although children of mothers who have elevated borderline personality disorder (BPD) features are a high-risk group, there remains little research examining developmental mechanisms that place these offspring at risk for emerging psychopathology. The current study included 68 mother-preschooler dyads, in which mothers with elevated BPD features were oversampled. Preschoolers (aged 3 and 4 years) completed a battery of executive functioning (EF) and theory of mind (ToM) measures. Accounting for several covariates (family income, maternal depression, child age, and child cognitive ability), maternal BPD features were associated with preschoolers' poorer EF and, although not associated with the overall ToM measure, were associated with affect perspective taking, a component of ToM.