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A Multitrait-Multimethod Approach to Evaluating Measurement Techniques in Developmental Research.
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