<prompt> All of the following are characteristics of Rett syndrome EXCEPTAutistic behaviorMicrocephalyPeculiar wringing motion of the handsAutosomal recessive inheritance  <response>: The genetics of Rett syndrome has not yet been determined. Although it is thought to be a genetic syn-drome, no inheritance pattern and no enzymatic deficiency or other metabolic explanation has been established for Rett syndrome. The other characteristics autistic behavior, microcephaly, peculiar wringing motion of the hand, dementia are common in patients with this disorder. 