Sixty-six psychotic children (2-20 years old) were examined with chromosomal cultures in folic acid deficient medium. Forty-seven percent showed chromosomal aberrations. (CL)

Analysis of cerebrospinal fluid of 22 psychotic children, 22 normal controls, and Ss with mental retardation, progressive encephalopathy, or meningitis revealed that psychotic Ss had raised levels of homovanillic acid. Thirteen Ss diagnosed as autistic showed isolated inrease of this metabolite. Increased concentration of mongamines was not…

Auditory brainstem responses (ABR) were compared in 24 autistic children, seven children with other childhood psychoses, and 31 normal children. One-third of the autistic Ss showed abnormal ABR indicating brainstem dysfunction and correlating with muscular hypotonia and severe language impairment. Ss with other psychoses and normal Ss showed…

Computerized tomography (CT) of the brain was used to examine 27 infantile autistic children, 9 children with other kinds of childhood psychoses, 23 children with mental retardation, and 16 normal children. Gross abnormalities were seen in 26 percent of the autism cases. (Author/SEW)

A 14-year-old with mild mental retardation and behavioral features suggestive of Asperger's syndrome is described. At the onset of puberty lethargic episodes took on a more dramatic form and became more reminiscent of cycloid/manic-depressive psychosis. Neurobiological links with and differences from the syndrome of infantile autism were found.…