An observational scale to record aggressive behaviors, defenses, and i
nterventions that occur during a psychotherapy group has been develope
d. Content and process items were included The content items focus on
the spoken material and are on a continuum of increasing group members
' awareness of and responsibility for their anger. The process items a
re directed to underlying pyschodynamic issues on a continuum from avo
iding anger, to indirect and then expression of anger. Leader interven
tions (responses) are also included The development of the scale; the
Aggression Observation scale for croup Psychotherapy (AOSGP), describe
d including pilot testing and reliability and validity findings.