Objective: The purpose of this article is to review the development of
concepts about the contribution of nature and nurture to brain struct
ure and mental function, and to derive the implications of these chang
ing concepts for clinical practice. Method: The literature of the past
five decades, as refracted by the author's personal experience in aca
demic psychiatry during that interval, is reviewed. Results: Psychiatr
ic theory has swung through mighty arcs in recent years but has begun
to re-equilibrate. Fifty years ago, psychoanalysis dominated the acade
mic scene; for the past two decades, reductionist biological determini
sm has held the fort. Neither position is tenable. To subscribe to eit
her is possible only by ignoring conflicting evidence. Worse, it means
short-changing patients, whose disorders do not come neatly packaged
Into ''organic'' and ''functional'' compartments Development is neithe
r predestined in the genome nor completely malleable to shaping by the
environment. Children inherit, along with their parents' genes, their
parents, their peers, and the communities they inhabit. Conclusions:
Contemporary psychiatric research conclusively demonstrates that mind/
brain responds to biological and social vectors and is jointly constru
cted by both. Major brain pathways are specified in the genome; detail
ed connections are fashioned by, and consequently reflect, socially me
diated experience in the world. Just at the time when integration at t
he level of theory is coming into sight, comprehensive patient care is
endangered by for-profit corporate managed care, which is transformin
g medical visits into commodities on a production line. Physicians and
patients must join in a coalition to protect quality, ensure access,
and build continuity into all of medical care.