Motivated goal pursuit and working memory: Are there age-related differences?

摘要

The influence of motivated behaviors linked to achievement goal pursuit on age-related differences in working memory (WM) has not been extensively investigated. In this study, younger and older participants completed a classical 2-back working memory task that included different types of goal-relevant stimuli. In particular, in Experiment 1 we used euro banknotes as stimuli, whereas in Experiment 2 we used Neapolitan playing cards. In Experiment 3, we directly compared working memory performance for euros and Neapolitan playing cards. We chose stimuli to induce different motivated behaviors linked to the pursuit of achievement goals (e.g., mastery, self-referential vs. performance, normative-based) and to examine their effects on working memory performance. Results showed how older adults were able to recognize target stimuli as well as younger adults when stimuli were goal-relevant. However, Neapolitan playing cards produced a greater number of errors, especially in the older adults. Finally, in Experiment 4, the same pattern of results occurred when motivated behavior was promoted using a dispositional induction technique. Our results show that motivated behaviors evoked by qualitatively diverse achievement goals can modulate WM performance in aging.