Why is identification seen as a stronger form of conformity than compliance but weaker than internalisation?

Identification involves both private and public acceptance of behaviour whereas compliance only involves the superficial change of just public, so is seen as weaker that identification. However indentification is temporary and will not last a long time after the individual has left the group in which the pressure originated, yet a stronger internalistation would mean one's beliefs are changed completely and will remain this way even when group influence is removed.