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Download full textLord, Francis E. – 1967
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…
Descriptors: Behavior Rating Scales, Blindness, Exceptional Child Research, Individual Testing
Schaeffer, Gary A.; And Others – 1979
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…
Descriptors: Behavior Rating Scales, Child Development, Correlation, Developmental Psychology
