R. Elliott and M. M. Wexler (1994) have introduced the Session Impacts
Scale, and W. B. Stiles, S. Reynolds, G. E. Hardy, A. Rees, M. Barkha
m, and D.A. Shapiro (1994) have undertaken a new factor analysis of th
e Session Evaluation Questionnaire with a British sample of clients. T
hese 2 measures of session-level psychotherapy effects have great pote
ntial as research tools. In this comment on the 2 articles, issues of
retest reliability, the connection of session-level measures to resear
ch strategies based on other units of analyses, and suggested uses of
the SIS and the SEQ are discussed. The importance of context-sensitive
session impact research and of a comprehensive theory relating sessio
n impacts to therapy outcome is also stressed.