From a systemic point of view, parental changes in behavior are far more effective and efficient than any therapeutic attempts at controlling the symptoms of the schizophrenic family member.
The concept of subjective experience is absolutely critical for understanding psychiatric illnesses. We need a biographical theory in order to develop a personalized scientific account of mental illness.
Biographies of individuals have a critical and decisive consequence for their mental illness. Although those subjective experiences are not reducible to quantitative measurement, yet we can study patterns of human behavior, tracing them through generations of family history.