- Undergraduate students, Nassau Community College, USA, 1970
- N = 67
- Non Response:
- 4%, 3% refusal, 1% incomplete information
Questionnaires administered in class and daily records kept at home during 28 days
- Authors's label
- Our Classification
- Breskin 15-item Rigidity Test, scored for the number of pairs out of 15 pairs in which the 'good fit' figure was chosen (see Breskin, 1968).