Collaboration with a married partner has been suggested as a potential strategy to help acquire and retain new skills in older adulthood. Yet, few studies have evaluated how older married couples work together when problem-solving through cognitive-based tasks. The present study involved a usability analysis of the performance and interaction of 40 healthy, community-dwelling older adults, or 20 older married couples, while using an in-vehicle global positioning system (GPS) for the first-time in a laboratory setting. Results suggest that couples utilize different interactive strategies that affect performance. Understanding how older married couples work together could inform strategies that facilitate collaborative learning in older adulthood. (Contains 4 tables and 2 figures.)