title: An evolutionary and developmental perspective.
authors.affiliation: Child Study Center, Yale University School of Medicine, New Haven, Connecticut 06520-7900, USA. james.leckman@yale.edu
authors.forename: James F
authors.initials: JF
authors.lastname: Leckman
mesh_terms: D000223:Adaptation, Psychological; D005075:Biological Evolution; D001921:Brain / Q000254:growth & development* / Q000503:physiopathology; D044127:Epigenesis, Genetic; D006239:Haplotypes; D006801:Humans; D009771:Obsessive-Compulsive Disorder / Q000235:genetics / Q000503:physiopathology*; D012919:Social Behavior; D012931:Social Environment