This study reports new validity evidence relating to the Emotional Availability Scales, the most popular observational measure of parent-child relationships. Results challenged the emotional availability theory, underscoring the importance of empirical validations of assessment measures.

Background The effects of maternal depression on mother‐infant relationship quality likely vary according to depression heterogeneity. We investigated the effects of different presentations of major depression on mother‐infant emotional availability (EA). Methods Data were obtained from 115 mother‐infant dyads from a longitudinal pregnancy cohort. Disorders, symptoms, and antidepressant use were assessed in pregnancy and postpartum, and EA was observed 6‐month postpartum. Major Depressive Disorder (MDD) and Generalized Anxiety Disorder (GAD) were assessed using the Structured Clinical Interview for the DSM‐5. A series of multivariate analyses of covariance analyses' examining the effects of disorder on EA were conducted. Results After controlling for maternal age, antidepressant use, and postpartum depressive symptoms, MDD accounted for 20% of the variance in EA. In the MDD/GAD group, 93% of interactions were rated as emotionally unavailable, nearly threefold the comparison group rate. Conclusions Findings demonstrate that different presentations of major depression are associated with observed differences in mother‐infant EA.

Objective: Poorer mother–infant interaction quality has been identified among women with major depression; however, there is a dearth of research examining the impact of bipolar disorder. This study sought to compare mother–infant emotional availability at 6 months postpartum among women with perinatal major depressive disorder, bipolar disorder and no disorder (control). Methods: Data were obtained for 127 mother–infant dyads from an Australian pregnancy cohort. The Structured Clinical Interview for the DSM-5 was used to diagnose major depressive disorder ( n = 60) and bipolar disorder ( n = 12) in early pregnancy (less than 20 weeks) and review diagnosis at 6 months postpartum. Prenatal and postnatal depressive symptoms were measured using the Edinburgh Postnatal Depression Scale, along with self-report psychotropic medication use. Mother and infant’s interaction quality was measured using the Emotional Availability Scales when infants reached 6 months of age. Multivariate analyses of covariance examining the effects of major depressive disorder and bipolar disorder on maternal emotional availability (sensitivity, structuring, non-intrusiveness, non-hostility) and child emotional availability (responsiveness, involvement) were conducted. Results: After controlling for maternal age and postpartum depressive symptoms, perinatal disorder (major depressive disorder, bipolar disorder) accounted for 17% of the variance in maternal and child emotional availability combined. Compared to women with major depressive disorder and their infants, women with bipolar disorder and their infants displayed lower ratings across all maternal and child emotional availability qualities, with the greatest mean difference seen in non-intrusiveness scores. Conclusions: Findings suggest that perinatal bipolar disorder may be associated with additional risk, beyond major depressive disorder alone, to a mother and her offspring’s emotional availability at 6 months postpartum, particularly in maternal intrusiveness.