A comparison is made, pointing out the parallels, between five systems of domination-racism, sexism, classism, nationalism and speciesism (the human domination of nature). In each of these, one group of (human) beings asserts its superiority over another group and thereby seems to justify the domination, exploitation and abuse of the oppressed group. An analytical model is then presented that traces the psychological development of domination behavior through four stages: (1) perception of difference and group identification, (2) pride and self-affirmation, (3) prejudice, superiority and arrogance, (4) domination, paranoia, and control. Some suggestions are made as to the conditions or events that most likely trigger the escalation from one stage to the next. This model is then applied to all five areas to arrive at a better understanding of the psychological dynamics involved. Hopefully, such an analysis may help us to devise strategies to prevent or minimize the growth of these socially destructive behavior patterns.