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

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

Abstract The State-Trait Anxiety Inventory–Trait version (STAI-T) was developed to measure
an individual's tendency to experience anxiety, but it may lack discriminant evidence of …

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 …

Objective Post‐traumatic growth typically refers to enduring positive psychological change
experienced as a result of adversity, trauma, or highly challenging life circumstances. Critics …

Leadership is a key predictor of employee, team, and organizational creativity and
innovation. Research in this area holds great promise for the development of intriguing …

The question of what makes a good teacher has been asked by practitioners, policymakers,
and researchers for decades. However, there is no guiding framework about which qualities …

To investigate the normative trajectory of self-esteem across the life span, this meta-analysis
synthesizes the available longitudinal data on mean-level change in self-esteem. The …

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 …

Drawing on both classic and current approaches, I propose a theory that integrates
motivation, personality, and development within one framework, using a common set of …