Genetic Differences Behind Toddler Activity Also Linked to ADHD Risk, Study Finds IndiaMedToday Genetic differences affecting infant's activity also associated with ADHD, study finds ET HealthWorld Genome-wide association studies of infant and toddler temperament in European and multi-ancestry populations Nature Toddler Temperament Is Genetic—And Linked to ADHD and Autism Technology Networks Genetic markers for ADHD influence early toddler activity levels News-Medical