Frustration Responses of Single and Partnered Mothers to Prolonged Infant Crying.

Prolonged infant crying can be a trigger for maternal frustration and can even predict intrusive infant-related thoughts of harm. In this study, we compared frustration responses to prolonged infant crying between single and partnered mothers and attempted to identify variables that mediated any difference between the two groups. We also identified acoustic characteristics of infant cries that were related to higher levels of reported maternal frustration. Twenty-five single and 25 partnered mothers with infants under the age of 6 months completed several mental health questionnaires, and then rated their frustration level after listening to each of 50 consecutive 15s infant cry videos from 50 different infants. As expected, greater maternal perceived stress was associated with higher frustration ratings in response to infant crying, and this was mediated by increased maternal negative affect. Also as expected, both financial strain and low social support were associated with greater perceived stress. However, our sample of single mothers did not experience more stress than our sample of partnered mothers. Nor did they find infant crying to be more frustrating, perhaps due to a recruitment bias toward higher functioning single mothers. Finally, several cry acoustic characteristics were associated with increased maternal frustration, including higher fundamental frequency, air energy, shimmer and longer duration of expiratory phonations, as well as a longer cumulative duration of crying. Our results suggest that maternal frustration in response to infant crying may be decreased by lowering maternal stress levels, and this may be achieved by increasing social support and decreasing financial strain. [ABSTRACT FROM AUTHOR]