The Predictive Value of Infancy Tests in Relation to Intelligence at Five Years

Prediction from the Cattell infant intelligence scale.

“…A number of investigators have shown that various infant psychometric tests have poor prognostic value (1,2,3,7). Cattell reported some encouraging data derived from her standardization of the Cattell Infant Intelligence Scale (CIIS) particularly with respect to infants eighteen months of age and older children.…”

“…The Study subjects were infants born at Children's Hospital, Buffalo, New York within the period from 1 The Child Growth Study from which these data were derived was developed through the cooperative efforts of the Department of Pediatrics and Obstetrics of the University of Buffalo School of Medicine and the New York State Department of Health.…”

Cognitive learning in infancy and early childhood.

“…These limitations of preschool tests may also partially answer why correlations between the performances of preschool and older children on IQ tests remain persistently low (J. E. L. D. Anderson, 1939;Bayley, 1949Bayley, , 1955Honzik, Macfarlane, & Allen, 1948).…”

The infantile disorders of hospitalism and anaclitic depression.

“…His description of the Foundling Home children's development follows: "Their Developmental Quotient on admission is below that of our best category [a group of children from 'professional homes'] but much higher than that of the other two [the Nursery infants and a group of infants from an isolated fishing village]. The picture changes completely by the end of the first year, when their Developmental Quotient sinks 3 to the astonishingly low level of 72" (43, p. 58) and, "By the end of the second year the Developmental Quotient sinks* to 45 ..." (43, p. 3 Italics mine. 70).…”