G. Benshakhar et al., SEEK AND YE SHALL FIND - TEST-RESULTS ARE WHAT YOU HYPOTHESIZE THEY ARE, Journal of behavioral decision making, 11(4), 1998, pp. 235-249
Expert clinicians were given batteries of psychodiagnostic test result
s (Rorschach, TAT, Draw-A-Person, Bender-Gestalt, Wechsler) to analyze
. For half, a battery came along with a suggestion that the person suf
fers from Borderline Personality disorder, and for half, that battery
was accompanied by a suggestion that he suffers from Paranoid Personal
ity disorder. In Study 1, the suggestion was made indirectly, through
a background story that preceded the test results. In Study 2, the sug
gestion was made directly, by the instructions given. The experts saw
in the tests what they hypothesized to be there. In particular, the ta
rget diagnoses were rated higher when they were hypothesized than when
they were not. (C) 1998 John Wiley & Sons, Ltd.