The sequence of development as hypothesized by Piaget has been confirmed for various groups of children by cross-sectional and longitudinal studies. Such consistency has increased interest in constructing scales based on Piaget's theory according to psychometric principles. Three major problems are discussed which present definite obstacles in the…

The Behavior Rating Scale measures behavioral skills by observing the child during the administration of other tests. The rating dimensions include independence, concentration, tractability, attitude and disposition toward testing, and overflow behavior. All are scored on a scale of 0-4, low to high. (PR)

In order to identify orientation and mobility skills essential for young blind children, a master list of skills was compiled from developmental studies and teachers' observations and formed into a scale comprised of 47 subscales, each of which had three or more items arranged in developmental order. Scaling was done by jury judgment and by full…

Developmental psychologists have not traditionally documented the psychometric properties of their observational instruments, partly because such concepts as reliability and validity are associated mainly with paper-and-pencil tests. A multitrait-multimethod correlation matrix (MTMM) was presented as a useful method for the psychometric evaluation…

Variables derived from two measures of classroom behavior, direct observation and teacher rating, were used in regression designs with measured intelligence to predict a measure of academic achievement of 69 kindergarten, first, and second grade children. Results suggest that measures of classroom behavior contribute variance to the prediction of…