It is widely believed that the insight-oriented psychotherapies provide the
ir clients with valid methods of self-exploration that lead to bona fide se
lf-knowledge. II also is widely believed that clients' insights must be tru
e in order to be therapeutically effective. Both these claims are implausib
le. I argue that because clients face significant epistemic pressures in th
e therapeutic encounter, the insight-oriented psychotherapies are highly su
sceptible to generating placebo insights, that is, illusions. deceptions, a
nd adaptive self-misunderstandings that convincingly mimic veridical insigh
t but have no genuine explanatory power. The insight-oriented psychotherapi
es also are highly susceptible to generating therapeutic artefacts that app
ear to confirm the insights acquired by clients. The powerful treatment met
hods to which clients are subjected generate some of the very psychological
and behavioral facts that clients claim to "discover" in their exploration
s. This impugns the scientific status of the insight-oriented psychotherapi
es. (C) 2001 John Wiley & Sons, Inc.