A relatively new instrument, the Defense Style Questionnaire (DSQ), re
presents an efficient method by which to quantify an individual's psyc
hological defense style. We administered the DSQ to 66 women hospitali
zed for anorexia nervosa, bulimia nervosa, or concurrent anorexia and
bulimia nervosa. Contrary to our expectations, there were no consisten
t patterns of identifiable defense styles specific to these groups in
qualitative, univariate, and multivariate analyses. The failure of the
DSQ to demonstrate specificity across eating disorder subgroups sugge
sts it is not informative in regard to the pathogenesis of these speci
fic syndromes. In contrast, in a previous study, we found temperamenta
l measures to be informative. (C) 1994 by John Wiley & Sons, Inc.