Intelligence—the ability to learn, reason and solve problems—is at the forefront of
behavioural genetic research. Intelligence is highly heritable and predicts important …

Personality psychology, which seeks to study individual differences in thoughts, feelings,
and behaviors that persist over time and place, has experienced a renaissance in the last …

Most theories and hypotheses in psychology are verbal in nature, yet their evaluation
overwhelmingly relies on inferential statistical procedures. The validity of the move from …

Abstract The use of Linear Mixed-effects Models (LMMs) is set to dominate statistical
analyses in psychological science and may become the default approach to analyzing …

Intelligence is associated with important economic and health-related life outcomes 1.
Despite intelligence having substantial heritability 2 (0.54) and a confirmed polygenic …

In this target article, we argue that personality processes, personality structure, and
personality development have to be understood and investigated in integrated ways in order …

Psychological scientists have recently started to reconsider the importance of close
replications in building a cumulative knowledge base; however, there is no consensus about …

Behavior genetics is the study of the relationship between genetic variation and
psychological traits. proposed “Three Laws of Behavior Genetics” based on empirical …

Individual differences in human intelligence, as assessed using cognitive test scores, have a
well-replicated, hierarchical phenotypic covariance structure. They are substantially stable …

This new edition provides an accessible guide to advances in neuroscience research and
what they reveal about intelligence. Compelling evidence shows that genetics plays a major …