Development of narcissism across the life span: A meta-analytic review of longitudinal studies.

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 stability. Three factors of narcissism were examined: agentic, antagonistic, and neurotic narcissism. Analyses were based on data from 51 samples, including 37,247 participants.

Rank-order stability of domain-specific self-esteem: A meta-analysis.

This meta-analysis examined the rank-order stability of domain-specific self-esteem by comprehensively synthesizing the available evidence in eight domains of self-esteem (i.e., academic, appearance, athletic, morality, romantic, social, mathematics, and verbal abilities).

The structure of metacognition in middle childhood: Evidence for a unitary metacognition-for-memory factor.

It has been debated whether children's metacognitive monitoring and control processes rely on a general resource or whether metacognitive processes are task specific. Moreover, findings about the extent to which metacognitive processes are related to first-order task performance are mixed. The current study aimed to uncover the relationships among children's monitoring (discrimination between correct and incorrect responses), control (accurate withdrawal of wrong answers), and performance across three memory-based learning tasks: Kanji learning, text comprehension, and secret code learning.

How relationship satisfaction changes within and across romantic relationships: Evidence from a large longitudinal study.

Research suggests that relationship satisfaction changes in systematic ways over the course of a relationship. In this preregistered study, we tested whether relationship satisfaction changes differently as a function of the eventual outcome of the relationship, that is, whether the relationship lasted, whether it was dissolved, and whether people began a new relationship after separation. Data came from a large longitudinal study (the Longitudinal Study of Generations), including 2,268 participants aged 16-90 years, who were assessed at up to seven waves across 20 years.