Data from a variety of infant intelligence scores make clear that it is not possible to consider (1) that infant intelligence is a measurable, stable and unitary construct, (2) that there is a general g factor easily discernible in infancy, (3) that there is stability of scores both within and across scales, or (4) that there is predictability…

AN INVESTIGATION AND EVALUATION OF TOTAL INFANT AND PRESCHOOL MENTAL TESTING SITUATIONS AND SOME CONCLUSIONS AS TO THE CURRENT NEEDS IN THIS AREA ARE PRESENTED. THESE APPROACHES ARE MADE TO THE PROBLEM. FIRST, THE THEORETICAL THINKING ON THE NATURE OF INTELLIGENCE AND HOW IT DEVELOPS IN CHILDREN IS TRACED. THERE HAS BEEN DISAGREEMENT OVER THE…

Stochastic difference equations of the Box-Jenkins form provide an adequate family of models on which to base the stochastic theory of human growth processes, but conventional time series identification methods do not apply to available data sets. A method to identify structure and parameters of stochastic difference equation models of human…

The nature of the relations between traditional psychometric and Piagetian instruments is analyzed, in order to provide information relevant to the question of which type of test or combination of them will provide the most useful information to those seeking to construct and maintain optimal learning environments. Four hypotheses are posed: (1)…

The stability of the Kaufman Assessment Battery for Children (K-ABC) was studied by examining its performance over a 5-year interval with 16 non-handicapped children aged 45 to 61 months at the beginning of the study. Global scale stability coefficients (corrected for restriction in range) for Time 1 testing (age 4 years) and Time 4 testing (age 9…

Results of the research reported in this paper suggest that the development of mentally handicapped preschool children may not be measurable in distinct cognitive, social/emotional, physical motor, and language areas. This research further indicates that a testing instrument designed to measure the generalized factors of intelligence and social…