Psychiatr News July 6, 2007
Volume 42, Number 13, page 2
© 2007 American Psychiatric Association
Nash Suggests Schizophrenia May Serve Adaptive Function
Mark Moran
Brilliant mathematician John Nash, Ph.D., who has had paranoid
schizophrenia since the late 1950s, shares his experiences with mental illness
and his thoughts on why mental illness exists in the human species.
The recovery movement,
focusing on a patient's attributes and aptitudes rather than on pathology, has
had no more potent a symbol than John Nash, Ph.D.
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John Nash, Ph.D.: "A possible, but perhaps questionable, inference
is that humans are notably subject to mental illness because there was a need
for diversity in the patterns of human mental functions."
Credit: David Hathcox
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The world-renowned mathematician, whose long struggle with schizophrenia
was the subject of the Oscar-winning film "A Beautiful Mind," has
offered vivid proof that while patients may not be "cured" of
schizophrenia, they can live fruitful and productive lives.
And, as in the case of Nash, they may sometimes dazzle the world with their
accomplishments.
At APA's 2007 annual meeting in San Diego in May, Nash spoke to a
jammed-to-the-rafters crowd in an address that had to be delayed to clear the
aisles of people who couldn't find seats.
Applying his specialized understanding of "game theory" to an
analysis of mental illness and his own experience with psychosis, the
79-year-old Nobel Laureate suggested that severe mental illness exists in
nature as a consequence of the diversification of species, and that it may
serve the needs of adaptation by its not infrequent association with
genius.
It is a line of thinking that has been followed by such renowned
psychiatric researchers as Nancy Andreasen, M.D., and Kay Redfield Jamison,
Ph.D.
Nash's remarks were made at the William C. Menninger Memorial Lecture
following the convocation of APA's 2006 fellows and distinguished fellows.
"When there are large populations and behavior of a complex
structure, it observably turns out that the individuals of a species can have
quite varied forms of behavior and that they may serve the interests of a nest
or family or tribe in quite varied fashions," Nash told psychiatrists.
"In some varieties of ants there are specialized members of a nest that
are 'warrior ants,' and these are quite specialized in their function. And
with the bees, only the queen and the haploid drones function directly in the
genetics of reproduction, and most of the hive are 'worker bees.'
"It is conceivable that the susceptibility of humans to depression or
to bipolar disorder may correlate positively specifically with the composition
of poetry," Nash said. He noted that the American poet Robert Lowell was
hospitalized at McLean Hospital near Boston at the same time that Nash was
admitted for schizophrenia.
"One thing about diversity in natural species that is well understood
by evolutionary biologists is that the natural phenomenon of mutations serves
to prepare a species for adaptation to changing conditions or for improved
adaptation to an existing level of environmental circumstances," Nash
said. "This is a topic that has been studied in game theory.... If
species are considered as players in a game that continually repeats, and if
the species are provided with the possibility of change through mutation of
their playing behavior,... then the effect is that the players or species can
be shown to naturally evolve so as to get better payoffs from the
game.
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APA President Pedro Ruiz, M.D., applauds John Nash, Ph.D., at the
conclusion of his lecture at the Convocation of Distinguished Fellows at APA's
2007 annual meeting. Ruiz, who invited Nash to speak at the meeting, praised
the Nobel Prize–winning mathematician as a "role model and
symbol" that people with mental illness can function successfully in
society and have much to contribute.
Credit: David Hathcox
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"So a possible, but perhaps questionable, inference is that humans
are notably subject to mental illness because there was a need for diversity
in the patterns of human mental functions," Nash said.
Nash earned a Ph.D. in mathematics from Princeton University, and from 1951
until 1959 was a faculty member at the Massachusetts Institute of Technology.
He was hospitalized in 1959 after exhibiting signs of paranoid
schizophrenia.
A year later he returned to Princeton and spent the next decade in and out
of psychiatric hospitals; he also became something of a legendary figure on
the Princeton campus, scrawling arcane equations on blackboards in the middle
of the night. Despite having stopped taking medication, by the 1990s friends
and acquaintances began to observe that he appeared to be recuperating.
In 1991 he remarried the woman he had first met and married at MIT, but
whom he had divorced when she had him forcibly hospitalized. In 1994 Nash
received the Nobel Prize in recognition of his early work on game theory.
Outgoing APA President Pedro Ruiz, M.D., was responsible for bringing Nash
to the meeting.
"This is a man who has had a very serious psychiatric illness yet who
has made outstanding contributions to humanity and the world at large,"
Ruiz said. "With the emphasis on recovery and full functionality on the
part of the mentally ill, Nash is an ideal role model and symbol. He
demonstrates to the public at large that there is great potential for the
mentally ill to function and contribute." 
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