title: Classification of elective mutism.
mesh_terms: D000293:Adolescent; D002648:Child; D002667:Child Reactive Disorders / Q000523:psychology; D002675:Child, Preschool; D006801:Humans; D007804:Language Development; D009155:Mutism / Q000145:classification / Q000523:psychology*; D009769:Object Attachment; D010324:Passive-Aggressive Personality Disorder / Q000523:psychology; D010698:Phobic Disorders / Q000523:psychology