Values-Alignment Messaging Boosts Adolescents' Motivation to Control Social Media Use.

Two preregistered experiments with 2,733 U.S. high school students (age range = 13-19 years) compared the impact of different messages on adolescents' motivation to control social media use (SMU).

Is subjective well-being independently associated with mortality? A 14-year prospective cohort study in a representative sample of 25 139 US men and women.

Objectives: To examine whether the inverse association of subjective well-being with mortality is independent of self-rated health and socioeconomic status in healthy adults.

Design: A population-based prospective cohort study based on an in-person interview. Cox regression was used to examine mortality hazards for happiness alone and for a standardised summary well-being measure that included happiness, life satisfaction and negative emotions.