Lack of awareness of mental disorder in schizophrenia has been increas
ingly identified by researchers during recent years due to a resurgenc
e: of interest in the subject. In addition, better measurement methods
have led to more valid and detailed investigations on insight in schi
zophrenia. Poor insight was been reported as a common phenomenon which
may have both nosological and prognostic value. Specifically, due to
recent studies indicating that lack of insight in schizophrenia may le
ad to poor treatment outcome, research focused on this phenomenon coul
d lead to increasingly effective and efficient treatment strategies. H
owever, many past and present studies reporting a correlation between
insight and outcome in schizophrenia demonstrate significant theoretic
al or methodological limitations which may limit the implications and
generalization of findings. This article lists and critically analyzes
historical and contemporary research focusing on insight, illness, an
d outcome in schizophrenia. The role of insight is outlined, as are cu
rrent methods for assessing awareness of mental disorder in schizophre
nia. Cumulative research in this area is then reviewed, in terms of hy
potheses, methods, conclusions, and limitations. Finally, suggestions
for future research in this area are delineated.