BACKGROUND: A number of studies document the benefits of face-to-face social interactions for cognitive functioning among middle-aged and older adults. Social activities in virtual worlds may confer similar if not enhanced cognitive benefits as face-to-face social activities, given that virtual interactions require the additional cognitive tasks of learning and navigating communicative tools and technology platforms. Yet, few studies have examined whether social activities in internet-based settings may have synergistic effects on cognitive functioning beyond those of face-to-face interactions. OBJECTIVE: This study examined whether internet-based social activity participation is associated with concurrent and later cognitive functioning, after adjusting for face-to-face social activity participation and sociodemographic covariates. METHODS: For cross-sectional analyses, we included 3650 adults aged 50 years and older who completed questions in the 2020 Health and Retirement Study about social activity participation, including specific internet-based social activities such as emailing or accessing social networks. Cognitive functioning was measured using the standardized cognitive tasks assessing working memory, episodic memory, and attention and processing speed. The longitudinal analyses included the 2034 participants who also completed follow-up cognitive assessments in 2022. RESULTS: Our results revealed that those with higher levels of internet-based social activity participation had higher levels of concurrent cognitive functioning than those with low levels of internet-based social activity participation, after adjusting for demographic and health-related factors and face-to-face social activity participation (b=0.44, SE 0.07; P<.001). More internet-based social activity participation also predicted better cognitive functioning 2 years later, even when adjusting for baseline cognitive functioning and other covariates (b=0.35, SE 0.09; P<.001). CONCLUSIONS: Our findings suggest that greater engagement in internet-based social activities is associated with higher levels of concurrent cognitive functioning and slower cognitive decline in middle-aged and older adults.

OBJECTIVES: Active lifestyles are related to higher levels of cognitive functioning. Fewer studies have examined the importance of engaging in different activities (activity variety) for cognitive functioning. Moreover, it is unclear whether activity variety in specific domains (i.e., cognitive, physical, or social) is important for cognitive health. The current study examined whether overall activity variety as well as variety in specific domains relate to cognitive functioning. METHODS: In Waves 2 and 3 of the Survey of Midlife Development in the United States, 3,337 adults reported their activity engagement and completed a cognitive battery. For longitudinal analyses, 2,049 participants were classified into 4 groups based on their rank ordering of activity variety across 9 years (remained high, increased, decreased, or remained low). RESULTS: Cross-sectional analyses revealed that overall activity variety was related to higher cognitive functioning over and above activity frequency; physical and social activity variety each contributed significantly and uniquely to this association. Longitudinal analyses revealed that those with consistently low overall activity variety at both waves had lower cognitive functioning at Wave 3 than those with high activity variety at either wave, after adjusting for cognitive functioning at Wave 2. Those with consistently high or increasing social activity variety had higher cognitive functioning at Wave 3 than participants with low activity variety at both waves. DISCUSSION: Findings suggest that activity variety, particularly in the social domain, is related to concurrent and future cognitive function across adulthood.

Participating in a broad and balanced range of daily activities (i.e., activity diversity) has been associated with better cognitive functioning in later life. One possible explanation for this finding is that high levels of activity diversity are merely a proxy for being more physically active, a factor robustly linked to cognitive health. The present study examined whether activity diversity has a unique association with cognitive functioning beyond physical movement. Community-dwelling older adults (N = 252, Mage = 73.55 years, SD = 6.39) completed a cognitive battery and then responded to ecological momentary assessments of their participation in 10 common activity types (e.g., reading, chores, social visits) every 3 hr for 5-6 days. They also wore accelerometers to track daily physical movement. Multiple regression models revealed that greater diversity in daily activities was related to higher cognitive functioning even after adjusting for physical movement and other covariates such as education level. This study further clarifies the unique relationship of activity diversity, beyond physical movement, with cognition. (PsycInfo Database Record (c) 2023 APA, all rights reserved).