INFORMATION WAS GATHERED ON SUBJECTS' NUMBER OF ADMISSIONS DURING THE INVESTIGATION PERIOD, CIVIL STATUS, AGE AT ADMISSION, TYPE OF CRIMINALITY, AGE AT FIRST CRIMINALITY, ALCOHOL ABUSE, DRUG ABUSE, DIAGNOSIS, AND STATURE. SCORES WERE AVERAGED AND COMPARED. THERE IS A SIGNIFICANTLY HIGHER FREQUENCY OF CHARACTER DISORDER AND CRIMINALITY IN PATIENTS WITH A HEIGHT OF 181 CENTIMETERS OR MORE THAN IN THEIR SHORTER COUNTERPARTS. THESE TALLER PATIENTS HAVE A COMPARATIVELY PRONOUNCED DISPOSITION TO CHARACTER DISORDER AND CRIMINALITY ACCORDING TO REGISTERED CRIMINALITY SCORES, WITH A MEAN AGE AT FIRST OFFENSE OF 10-14 YEARS. THERE IS A HIGH FREQUENCY OF SEXUAL CRIMINALITY AMONG ALL SUBJECTS, BUT NO STATISTICALLY SIGNIFICANT DIFFERENCE BETWEEN THE FREQUENCY OF THIS TYPE OF BEHAVIOR OR ANY OTHER TYPE OF CRIMINALITY FOR THE SHORTER AND TALLER PATIENTS. IT IS SUGGESTED THAT THE FINDINGS REGARDING THE TALLER PATIENTS MIGHT BE EXPECTED ON THE BASIS OF STUDIES SHOWING PATIENTS WITH THE XYY SYNDROME TO BE TALL AND HAVE A COMPARATIVELY PRONOUNCED DISPOSITION TO CHARACTER DISORDER AND CRIMINALITY. TABULAR DATA AND REFERENCES ARE PROVIDED. (DAG)