Optimal sampling strategies for characterizing behavior and affect from ambulatory audio recordings.

Advances in mobile and wearable technologies mean it is now feasible to record hours to days of participant behavior in its naturalistic context, a great boon for psychologists interested in family processes and development. While automated activity recognition algorithms exist for a limited set of behaviors, time-consuming human annotations are still required to robustly characterize the vast majority of behavioral and affective markers of interest. This report is the first to date which systematically tests the efficacy of different sampling strategies for characterizing behavior from audio recordings to provide practical guidelines for researchers.

Momentary work worries, marital disclosure, and salivary cortisol among parents of young children.

Objective: To investigate whether worries about work are linked to people's own cortisol levels and their spouses' cortisol levels in everyday life and whether marital factors may moderate these links. Although research has shown that satisfying marriages can buffer the physiological effects of everyday stress, the specific mechanisms through which marriage influences the processing and transmission of stress have not yet been identified.

Methods: Thirty-seven healthy married couples completed baseline measures and then provided saliva samples and indicated their worries about work for six times a day from a Saturday morning through a Monday evening.