Intra-group regulations in teams and organizations are sometimes diffi
cult to change even if they appear irrational and do not function well
. They may indicate the presence of collective ideologies within teams
and can be understood as an expression of interpersonal defense. Grou
p ideologies may become part of the identity of the individual group m
embers. Being member of a group and sharing a collective ideology stab
ilizes individual identity; at the same time reality perception and ra
nge of thinking in the individual are narrowed. If supervisors and the
rapists consider both aspects of ideologies, they may approach some in
terpersonal defenses in groups and teams in a different way. A psychoa
nalytic concept of identity may contribute to an understanding of deve
lopments in large scale organizations and in society.