References
- Cattell , R. B. 1940 . A culture-free intelligence test: I . J. Educ. Psychol , 31 : 161 – 179 .
- Cattell , R. B. , Feingold , S. N. and Sarason , S. B. 1941 . A culture-free intelligence test: II. Evaluation of cultural influence on test performance . J. Educ. Psychol , 32 : 81 – 100 .
- Davis , A. 1951 . Social-class Influences Upon Learning , 100 Cambridge, Mass : Harvard Univ. Press .
- Davis , A. and Eells , K. 1953 . Davis-Eells Games: Manual , 72 Yonkers-on-Hudson : World Book .
- Davis , W. A. and Havichurst , R. J. 1948 . The measurement of mental systems (Can intelligence be measured?) . Sci. Mo. , 66 : 301 – 316 .
- Eells , K. , Davis , A. Havighurst , R. J. Intelligence and Cultural Differences , 151 388 Chicago : Univ. Chicago Press .