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Table 1 Individual-based PP interventions evaluated in randomized-controlled trials

From: Psychological well-being as part of the public health debate? Insight into dimensions, interventions, and policy

Positive Psychology (PP) intervention Psychological well-being and other psychosocial outcomes effectively changed Example references
Gratitude (e.g., gratitude for positive events, counting blessings, gratitude visit, or gratitude letter) Life satisfaction (↑), optimism (↑), positive affect (↑), happiness (↑), depression symptoms (↓), negative affect (↓) A1- A5
Best possible self Life satisfaction (↑), optimism (↑), positive affect (↑) A4, A6-A8
Acts of kindness Life satisfaction (↑), optimism (↑), anxiety symptoms (↓), social connection (↑) A5, A9
Use of character strengths Happiness (↑), depressive symptoms (↓) A3
Savoring or capitalizing on positive events Positive affect (↑), life satisfaction (↑), depression symptoms (↓) A10
Forgiveness Positive affect (↑), anxiety symptoms (↓), depression symptoms (↓) A11, A12
Mindfulness Positive affect (↑), post-traumatic growth (↑), perceived stress (↓), depression symptoms (↓), anxiety symptoms (↓), quality of life (↑) A13-A16
Multicomponent PP interventions (i.e., two or more interventions as those reported above, provided across several sessions) Positive affect (↑), depression symptoms (↓), anxiety symptoms (↓), quality of life (↑) A17-A23
  1. Note. ↑= increase; ↓=decrease