This randomized control study is designed to understand the role of a positive psychology intervention (PARK: Positive Affect Regulation sKills) in biological aging and well-being. PARK provides a series of positive emotion skills in a self-guided online format, making the program accessible and convenient. Our main aims are: Aim 1: To explore the effects of PARK on psychological well-being (e.g., depression, anxiety, positive affect). Aim 2: To explore the effects of PARK on biological age as defined by DNA methylation (DNAm) GrimAge and electrocardiogram-age (ECG-age), as well as physiological well-being in adults (e.g., cardiovascular, endocrine, musculoskeletal functioning, etc.).
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Patient-Reported Outcomes Measurement Information System (PROMIS) Positive Affect (v1.0) and PROMIS Meaning and Purpose (v1.0)
Timeframe: Baseline, 3 months, 6 months, 12 months
PROMIS Depression (v1.0), Anxiety (v1.0), Social Isolation (v2.0)
Timeframe: baseline and 3, 6, 12 months post-baseline