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Intelligence - nature or nurture? Researchers find a gene for intelligence and also that a bigger brain matters, yet other recent articles show how motivation affects learning.

Study of brain networks shows differences in children with OCD

Communication between some of the brain's most important centers is altered in children with obsessive-compulsive disorder, a new study shows. The results are highly consistent with observations in the clinic, said a researcher. "Children with OCD are beset by preoccupations and can't easily move on from certain tasks and behaviors. As all complex behavior arises from brain networks, being trapped in this mode must arise from impaired brain network interactions in OCD. In our previous studies we had focused on assessing the structure and the neurochemistry of the anterior cingulate. We had long suspected that brain network interactions originating in this region are impaired in the disorder. But this is the first study to clearly demonstrate this."
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