There is not. Anyone takes care of a person with a PD would tell you that. And the high functioning people with PDs would explain to you the all the very specif

There is not. Anyone takes care of a person with a PD would tell you that. And the high functioning people with PDs would explain to you the all the very specific deficits they have to overcome in order to function. Interviewing people in Cluster B is often an exercise in being lied to. It also requires them to have insight which is generally lacking as a clinical feature. Their caretakers are in a tough position, since they’re often the target of many manipulations gauges to engender sympathy and continued care. All in all it reveals a weakness in diagnosis and formulation of disorders by anecdote. And the clinical researchers would explain to you as much as we know regarding regarding the developmental and environmental causes of specific PDs. When they can accurately predict such outcomes from first principles even as well as they do for something like major depressive episode, schizophrenia, etc, I’ll take those claims seriously.