This paper deals with two fundamental problems that are embedded in the evaluation of school practices: (1) attributing value to outcome measures, and (2) attributing outcomes to particular practices. Ways of generating evidence regarding the value of an outcome are discussed, particularly longitudinal research that clarifies the causal relations…

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…

This report briefly summarizes the educational progress of a sample of children who took part in one of the earliest Head Start programs (1966). The report addresses the following questions: (1) Was participation in Head Start a factor in preventing retention in grade and/or special class placement? (2) Were there differences between Head Start…

The present study states as its purpose the delineation of everyday transactions with the environment of a group of children observed longitudinally in their own homes and neighborhoods from age one to three. This research is considered to have been designed to answer: (1) what types of experiences are intellectually valuable to the young child;…