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Researchers at Karolinska Institutet and UCL have identified a general factor called ‘decision acuity’ that affects young people's decision-making ability, independent of IQ, and is associated with good social functioning. The results have been published in the journal Neuron.

The timing of anemia—a common condition in late pregnancy—can make a big difference for the developing fetus, according to research at Karolinska Institutet published in JAMA Psychiatry. The researchers found a link between early anemia and increased risk of autism, ADHD and intellectual disability in the child. Anemia discovered toward the end of pregnancy did not have the same correlation. The findings underscore the importance of early screening for iron status and nutritional counselling.

Psychiatric comorbidity may play an important role in the increased risk of premature death in people with ADHD (attention-deficit/hyperactivity disorder), according to a new extensive registry study conducted at Karolinska Institutet and Örebro University in Sweden. The results, which are published in JAMA Psychiatry, suggest that improved awareness and care of psychiatric comorbidities such as substance use disorders may help reduce serious outcomes associated with ADHD.

What happens in the brain when we feel discomfort? Researchers at Karolinska Institutet in Sweden are now one step closer to finding the answer. In a new study published in the journal Molecular Psychiatry they identify which pathways in the mouse brain control behaviour associated with aversion.

Researchers at Karolinska Institutet have identified an evolutionarily preserved scent molecule in mammalian blood that attracts predators and repels prey. In the study, published in Scientific Reports, they also report that humans exposed to the smell become stressed and react to it as if they were prey.