The gap between knowledge generated by systematic inquiry and its even
tual use by practitioners has been a concern in social work for severa
l decades. Explanations for the gap have been identified as the orient
ation or attitudes of practitioners, the character of professional edu
cation, and the nature of scientific inquiry. The structural character
of both practice itself and its knowledge base have been overlooked a
s an explanation, By comparing legal and social work practice, we sugg
est that characteristics of social work practice and knowledge also im
pede research utilization.