We present three current, complementary formulations of the assimilation mo
del: (a) the schema formulation, based on cognitive developmental concepts:
(b) the voices formulation, in which assimilation is understood as the con
struction of a meaning bridge between active internal voices: and (c) the c
ognitive science formulation, which uses cognitive concepts of memory types
to understand the failure of memory in cases of warded-off and avoided exp
eriences. These views of assimilation are used to understand the varied fun
ctions that narratives (stories about real or imagined events outside of th
erapy) may play in psychotherapy, including narratives that avoid encounter
s with threatening material, narratives that approach such material indirec
tly or symbolically, narratives by which clients reexperience trauma, and n
arratives that help construct a mature understanding. (C) 1999 John Wiley &
Sons, Inc.