title: Comorbidity: cognition and biology count!
abstract: We agree with Cramer et al. that pure cases of behavioral disorders with no symptom overlaps are rare. However, we argue that disorders do exist and the network idea is limited and limiting. Networks of symptoms are observed mainly at behavioral levels. The core deficit is commonly at the cognitive or brain levels, and there the story is completely different.
authors.affiliation: Edmond J. Safra Brain Research Center for the Study of Learning Disabilities, Department of Learning Disabilities, University of Haifa, Mount Carmel, Haifa 31905, Israel. orly.rubinsten@gmail.com
authors.forename: Orly
authors.initials: O
authors.lastname: Rubinsten
authors.forename: Avishai
authors.initials: A
authors.lastname: Henik
mesh_terms: D001289:Attention Deficit Disorder with Hyperactivity / Q000175:diagnosis* / Q000453:epidemiology; D002648:Child; D002653:Child Behavior Disorders / Q000175:diagnosis* / Q000453:epidemiology; D003071:Cognition; D015897:Comorbidity; D006801:Humans; D007859:Learning Disabilities / Q000175:diagnosis* / Q000453:epidemiology; D009483:Neuropsychological Tests