Presymptomatic testing is more controversial, because in many cases little can be done to prevent or ameliorate the condition. Milner et al. (1999) reported that in a mixed sample of psychiatric faculty and residents (n=57), Alliance for the Mentally Ill members (n=65), and undergraduates (n=105), half of persons who suffered from mental illness and family members, and a third of respondents who had a friend with a mental illness, said they would have wanted to know of the condition earlier in life. Psychiatrists, too, are divided over presymptomatic testing. If there were a genetic test with a high predictive probability (>95% chance of having a disorder given a positive test result), only a minority of psychiatrists attending a CME course said they would use it to test asymptomatic adults with a family history of schizophrenia (45%), bipolar disorder (43%), or panic disorder (29%) (Finn et al., 2005). However, other surveys have found higher rates of interest in presymptomatic genetic testing. In a survey by Jones et al. (2002), 69% of psychiatrist trainees (n=32), 79% of patients in a general practice
