• Children with ADHD who take stimulant medications take longer to fall asleep, sleep shorter periods and don’t get high quality sleep, research from the University of Nebraska-Lincoln Department of Psychology showed. "We would recommend that pediatricians frequently monitor children with ADHD who are prescribed stimulants for potential adverse effects on sleep," said Katie Kidwell, a psychology doctoral student who served as the study's lead author.

• In a new study from Norway, researchers investigated the relationship between the development of ADHD symptoms in young children and rejection by peers. "ADHD predicts poor relations with peers, but do poor relations with peers affect symptoms of ADHD, forming, in effect, a vicious cycle?" asks Frode Stenseng, associate professor of psychology at the Norwegian University of Science and Technology and the study's lead author. "We found that more ADHD symptoms at age 4 predicted more rejection by peers at age 6, and reciprocally, that greater peer rejection at age 4 predicted more symptoms of ADHD at age 6. But these effects were less evident from ages 6 to 8."

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