References
- Cattell , P. 1940 . The Intelligence of Infants , New York : Psych. Corp. .
- Doll , E. 1953 . The Measurement of Social Competence , New York : Educational Publishers .
- Escalona , S. 1950 . The Use of Infant Tests for Predictive Purposes . Bull. Menn. Clin. , 14 : 117 – 128 .
- Gesell , A. and Amatruda , C. 1947 . Developmental Diagnosis , New York : Hoeber .
- Griffiths , R. 1954 . The Abilities of Babies , London : Univ. of London .
- Simon , A. 1954 . Paper presented at the Conference of the American Assoc. of Orthopsychiatry . 1954 , New York .
- Soddy , K. , ed. 1955 . Mental Health and Infant Development , Vol. 1 , London : Routledge & Kegan Paul .