Self-determination theory (SDT) is a theoretical framework for addressing human motivation
and wellness that has been actively and increasingly researched over 4 decades. As a …

Achievement emotions are emotions linked to academic, work, or sports achievement
activities (activity emotions) and their success and failure outcomes (outcome emotions) …

Cross-lagged models are by far the most commonly used method to test the prospective
effect of one construct on another, yet there are no guidelines for interpreting the size of …

We present a three-dimensional taxonomy of achievement emotions that considers valence,
arousal, and object focus as core features of these emotions. By distinguishing between …

The relationship between social media use and life satisfaction changes across adolescent
development. Our analyses of two UK datasets comprising 84,011 participants (10–80 years …

We draw on genetics research to argue that complex psychological phenomena are most
likely determined by a multitude of causes and that any individual cause is likely to have …

This study reports the most comprehensive assessment to date of the relations that the
domains and facets of Big Five and HEXACO personality have with self-reported subjective …

Decades of research document individual differences in prosocial behavior using controlled
experiments that model social interactions in situations of interdependence. However …

Effect sizes are underappreciated and often misinterpreted—the most common mistakes
being to describe them in ways that are uninformative (eg, using arbitrary standards) or …

A recurring claim in the literature is that active social media use (ASMU) leads to increases
in well-being, whereas passive social media use (PSMU) leads to decreases in well-being …