Ageing Together: Interdependence in the Memory Compensation Strategies of Long-Married Older Couples.

People live and age together in social groups. Across a range of outcomes, research has identified interdependence in the cognitive and health trajectories of ageing couples. Various types of memory decline with age and people report using a range of internal and external, social, and material strategies to compensate for these declines. While memory compensation strategies have been widely studied, research so far has focused only on single individuals. We examined interdependence in the memory compensation strategies reported by spouses within 58 older couples. Couples completed the Memory Compensation Questionnaire, as well as an open-ended interview about their memory compensation practices. We found that internal, intra-individual memory compensation strategies were not associated within couples, but external, extra-individual strategies showed interdependence. Individuals' scores on material/technological compensation strategies were positively correlated with their partners'. Reported reliance on a spouse was higher for men and increased with age. Our open-ended interviews yielded rich insights into the complex and diverse resources that couples use to support memory in day-to-day life. Particularly evident was the extent of interaction and coordination between social and material compensation, such that couples jointly used external compensation resources. Our results suggest that individuals' reports of their compensation strategies do not tell the whole story. Rather, we propose that older couples show interdependence in their memory compensation strategies, and adopt complex systems of integrated material and social memory compensation in their day-to-day lives.

Here's looking at you: eye gaze and collaborative recall.

In everyday life, we remember together often. Surprisingly, research reliably shows costs of collaboration. People remember less in groups than the same number of individuals remember separately. However, there is evidence that some groups are more successful than others, depending on factors such as group relationship and verbal communication strategies. To understand further the characteristics of more successful vs. less successful collaborative groups, we examined whether non-verbal eye gaze behaviour was associated with group outcomes. We used eye tracking glasses to measure how much collaborating dyads looked at each other during collaborative recall, and examined whether individual differences in eye- and face-directed gaze were associated with collaborative performance. Increased eye- and face-directed gaze was associated with higher collaborative recall performance, more explicit strategy use, more post-collaborative benefits, and increased memory overlap. However, it was also associated with pre-collaborative recall, indicating that gaze during collaboration may at least partially reflect pre-existing abilities. This research helps elucidate individual differences that underlie the outcomes of collaborative recall, and suggests that non-verbal communication differentiates more vs. less successful collaborative groups.