The parts of the psychoanalyst's report I found especially interesting was this (my emphasis):
David's withdrawal from all sporting activities at around the age of 20 which he had previously enjoyed, coinciding with his emerging interest in philosophical issues together with his experimentation with drugs are suggestive of an underlying psychotic process.
I've never seen it stated so baldly before: if you are more interested in philosophy than sports, you are probably insane.
She also commented that
His manner, however, including his posture, was wooden and he lacked emotional expression. He displayed a pervasive tendancy to intellectualise...
Compare this with this bit from
Wikipedia:
Blunted affect is the scientific term describing a lack of emotional reactivity on the part of an individual. The precise boundary between the generally positive personality trait "serious" and the generally pathological "blunted affect" is impossible to describe precisely because it is culture specific and relies on subjective values.
...
One final consideration worth noting is that adults generally display less affect than children. This suggests blunting one's affect may be a normal part of maturation.
I suggest that the psychoanalyst in question was merely mis-interpreting David because she was not treating him as an adult.
This could be a matter of context. She was looking for a problem, and most of the people she sees have problems. I think she was mis-interpreting as pathological what could be described as
emotional maturity, from another perspective.