Early styles of interaction in mother-twin infant dyads and maternal mental health.

Transition to parenthood is considered a critical process for mothers of twins. There are, however, few studies on the subject. This study aims to evaluate the differences between mother-twin infant dyads and mother-singleton infant dyads with regard to maternal depression, anxiety, parenting stress, and the quality of mother-infant interaction. Mothers of twin infants (N = 40) were compared to mothers of singletons (N = 72). At infant 3 months, maternal depression, anxiety, and parenting stress were assessed via a questionnaire and styles of interaction with the Care-Index. The results indicated that mothers of twins (vs mothers of singletons) had significantly higher state anxiety and higher scores on the Difficult Child Scale of the Parenting Stress Index at infant 3 months. No significant differences between the two groups were found with regard to maternal depression. Mothers of twins had significantly lower sensitivity and were more unresponsive than mothers of singletons. Twin infants had significantly more difficult and compliant behaviours than singleton infants. Assisted reproductive treatment (ART) and prematurity had no effect on any of the examined variables. State anxiety was shown to partially mediate the relationship between twin parenthood and maternal sensitivity and to completely mediate the relationship between twin parenthood and infant difficult style. Maternal unresponsiveness was shown to be exclusively linked to being the parent of twins. The study shows that twin parenthood has a significant effect on maternal mental health and on the quality of mother-infant interaction and highlights the importance of early prevention programmes for twin parents.