Two 160-item experimental forms of multidimensional personality test to assess vocational potential of clients of limited literacy (third grade reading level) were developed and administered to clients at rehabilitation centers and at centers for the retarded. Using the 16 Personality Factors Test as a model, items were constructed to do the following: yield meaningful self-descriptions and personality description patterns that match known ones; determine if matching patterns are sufficiently similar to permit the transfer of previous knowledge to the use of new patterns; and establish the stability of new found patterns. Data analysis consisted of the oblique simple structure criterion and analysis by item packages. Results with 325 clients, whose literacy levels and verbal sophistication were below the sixth grade level (including 216 who completed both forms), implied that items meeting the above standard were derived. Eight analyses revealed the factors which indicated whether a person is outgoing, emotionally stable, impulsive, assertive, enthusiastic, conscientious, venturesome, tender minded, aloof, suspicious, imaginative, shrewd, apprehensive, self sufficient, self disciplined, or tense. (LE)