The Mediating Role of Affective States in Short-Term Effects of Activity Engagement on Working Memory in Older Age

• Published in: Gerontology (Basel) Vol. 69; no. 12; pp. 1448 - 1460
• Main Authors: Luo, Minxia, Moulder, Robert Glenn, Weber, Elisa, Röcke, Christina
• Format: Journal Article
• Language: English
• Published: Basel, Switzerland 01.12.2023
• Subjects: Aged; Arousal; Behavioral Science Section: Research Article; Cognition; Emotions; Humans; Leisure Activities - psychology; Memory, Short-Term; Affective arousal; Ambulatory cognitive tasks; Lead-lag effect; Cognitive aging; Activity engagement
• ISSN: 0304-324X; 1423-0003
• DOI: 10.1159/000534130

Abstract Introduction: It has been shown that activity engagement is associated with cognitive ability in older age, but mechanisms behind the associations have rarely been examined. Following a recent study which showed short-term effects of activity engagement on working memory performance appearing 6 h later, this study examined the mediating role of affective states in this process. Methods: For 7 times per day over 2 weeks, 150 Swiss older adults (aged 65–91 years) reported their present (sociocognitive/passive leisure) activities and affective states (high-arousal positive, low-arousal positive, high-arousal negative, and low-arousal negative) and completed an ambulatory working memory task on a smartphone. Results: Multilevel vector autoregression models showed that passive leisure activities were associated with worse working memory performance 6 h later. Passive leisure activities were negatively associated with concurrent high-arousal positive affect (and high-arousal negative affect); high-arousal positive affect was negatively associated with working memory performance 6 h later. A Sobel test showed a significant mediation effect of high-arousal positive affect linking the time-lagged relationship between passive leisure activities and working memory. Additionally, sociocognitive activities were associated with better working memory performance 6 h later. Sociocognitive activities were associated with concurrent higher high- and low-arousal positive affect, which, however, were not associated with working memory performance 6 h later. Thus, a mediation related to sociocognitive activities was not found. Discussion: Passive leisure activities could influence working memory performance through high-arousal positive affect within a timeframe of several hours. Results are discussed in relation to an emotional, and possibly a neuroendocrine, pathway explaining the time-lagged effects of affective states on working memory performance.