Seriously tho - when I began my training as a mental health nurse, out of a class of 20 there were 3 with strong psychoses. Apparently this is not unusual in mental health whether it be psychologists, psychiatrists or nurses. I suspect the same proportion or thereabouts would be attracted to Typology. This rate is well above the occurrence in the population at large.
Most people who suffer from psychoses these days are 'managed' so it would only be if they stopped taking meds that you would notice.