Past research syntheses provided evidence that personality traits are both stable and
changeable throughout the life span. However, early meta-analytic estimates were …

Debates about the benefits of self-esteem have persisted for decades, both in the scientific
literature and in the popular press. Although many researchers and lay people have argued …

How does subjective well-being (SWB) develop across the life span? Theories and previous
empirical research suggest heterogeneous conclusions regarding this question. Therefore …

Theorists have long assumed that people's self-esteem and social relationships influence
each other. However, the empirical evidence has been inconsistent, creating substantial …

Previous research has not led to any agreement as to the normative trajectory of relationship
satisfaction. In this systematic review and meta-analysis, we summarize the available …

Objectives Evidence concerning physical activity and mental health remains less well
documented for children and adolescents. An updated review of systematic reviews and …

Objective This study aimed to determine the impact of COVID-19 lockdown on social
network sites (SNS) use and to explore whether SNS use is associated with body image …

While there is some evidence for changes in personality traits, life satisfaction, and self-
esteem as a function of life events, effects have been small and inconsistent across studies …

Individuals experience loneliness when they perceive a deficiency in the quality or quantity
of their social relationships. In the present meta-analysis, we compiled data from 75 …

This meta-analytic review investigated the development of narcissism across the life span,
by synthesizing the available longitudinal data on mean-level change and rank-order …