A groundbreaking study reveals that genetic factors increasingly influence IQ as we age, while environmental factors are more significant during early development.

A large-scale study has found that women have a higher genetic risk for developing post-traumatic stress disorder, while unique life experiences also play a key role in developing the disorder.

ADHD and emotional problems are deeply connected, but how does this relationship evolve from childhood to adulthood? A new study reveals that their link strengthens over time, with genetics playing a crucial role in their shared developmental trajectory.

New research suggests irrational thinking is largely a reflection of lower intelligence, with both traits heavily influenced by genetics.

A new study of British twins suggests that children who receive more maternal affection grow into more open, conscientious, and agreeable adults. The findings point to lasting effects of parenting, even after accounting for genetics and shared family environment.

Nature Human Behaviour - This study uncovered genetic associations with environmental sensitivity in psychiatric and neurodevelopmental traits in an international collaboration using data from more...

A large-scale study of twins has found that long-term anxiety traits in young adults are largely shaped by genetics, while short-term changes are more influenced by life experiences. The research also identified two distinct patterns of anxiety symptoms.

A new study using twin data indicates that accelerated biological aging predicts cognitive decline from childhood to midlife—especially for those raised in lower-income households. The research sheds light on how early disadvantage may shape brain health…

Study of twins finds accelerated biological aging, amplified by early-life disadvantage, is linked to steeper IQ declines by midlife

A new study in Acta Psychologica reveals that schooling largely explains IQ differences in identical twins raised apart. When their educations are very dissimilar, their IQ scores can be as different as those between complete strangers.

A large Swedish study suggests the dramatic rise in autism diagnoses is not matched by an increase in symptoms. While ADHD traits remained stable in boys, they saw a small, statistically significant increase in girls, indicating other factors drive diagnostic…

People with more formal schooling are reliably less likely to hold authoritarian political views. A new study of Norwegian twins reveals that childhood environments and genetics largely explain this link, though education itself still plays a role.