Genome-wide association studies have identified hundreds of robust genetic associations
underlying psychiatric disorders and provided important biological insights into disease …

The question of why people show individual differences in their behaviours and capacities
has intrigued researchers for centuries. Behaviour genetics offers us various methods to …

The set of methods discussed in this collection has emerged from the convergence of two
scientific fields—genetics and causal inference. In this introduction, we discuss relevant …

Much research effort is invested in attempting to determine causal influences on disease
onset and progression to inform prevention and treatment efforts. However, this is often …

During the last decade quantitative and molecular genetic research on sleep has increased
considerably. New behavioural genetics techniques have marked a new era for sleep …

Objective Parent anxiety is associated with offspring internalizing problems (emotional
problems related to anxiety and depression). This may reflect causal processes, whereby …

In this review we highlight the contributions of passive experiments that address important
exercise related questions in integrative physiology and medicine. Passive experiments …

Discussing causes in science, if we are to do so in a way that is sensible, begins at the root.
All too often, we jump to discussing specific postulated causes but do not first consider what …

Establishing causal relationships in observational studies is an important step in research
and policy decision making. The association between an exposure and an outcome can be …

Objectives We provide a brief overview of collider bias and its implications for criminological
research. Methods Owing to the nature of the topics studied, as well as the common data …