Sensitive and comprehensive client assessment entails complex conceptu
al and methodological considerations. Such activity is at the heart of
matching clients to appropriate treatments. This article begins by sp
ecifying the goals and functions of assessment to support matching. Th
is is followed by a discussion of the strategies employed in Project M
ATCH to identify matching and outcome variables. The assessment batter
y used in Project MATCH is next described. Finally, an overview of iss
ues surrounding administration of assessment measures is provided. Par
ticular attention is given to the topics of sequencing and timing of m
easures.