Definition extracted with permission from Simon, Fritz, et al, Family Process, Inc.: Language of Family Therapy: A Systemic Vocabulary and Source Book (Family Process Press Series)
Undifferentiated family ego mass is a concept introduced by Murray Bowen to describe "a conglomerate emotional oneness that exists in all levels of intensity" (1966, p. 355). "On one level each family member is an individual, but on a deeper level, the central family group is as one" (1961, p. 45).
Credit