Sources of a Person's Differences

The following table gives Wolfensberger’s analysis of sources of difference:

Sources	Examples
1. Physical characteristics, viewed mostly as non-responsible A. Primarily inherent: Physical features Congenital handicaps Age B. Primarily acquired: Physical features Secondary handicaps	Height Albinism Old age Institutional shuffle Amputation
2. Behavior, viewed mostly as responsible A. Overt: Acts Attire Social associations Physical associations B. Covert: Beliefs Ideas	Crime, addictions Out-dated fashions Counter-culture membership Residence, possessions Delusions Atheism
3. Descent, nationality, attribution, viewed as non-responsible	Caste