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Ronald, Angelica; Edelson, Lisa R.; Asherson, Philip; Saudino, Kimberly J. – Journal of Abnormal Child Psychology, 2010
Behaviors characteristic of autism and ADHD emerge in early childhood, yet research investigating their comorbidity has focused on older children. This study aimed to explore the nature of the relationship between autistic-like traits and ADHD behaviors in a community sample of 2-year-olds. Twins from the Boston University Twin Project (N = 312…
Descriptors: Siblings, Attention Deficit Hyperactivity Disorder, Children, Genetics