During Blumberg's 1991 trial, Dr. William S. Logan, director of the Law and Psychiatry Department at the Menninger Clinic and a nationally recognized authority on forensic psychiatry, revealed that Blumberg had undergone psychiatric treatment for schizophrenic delusions and tendencies. He was hospitalized numerous times during his adolescence where twelve psychiatrists diagnosed him variously as schizophrenic, delusional, paranoid, or compulsive. Dr. Logan also revealed that a history of psychiatric illness was in Blumberg’s family.