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Clark, Lee Anna; Watson, David – Psychological Assessment, 1995
Basic principles that should be followed by anyone developing a scale are reviewed, with emphasis on verbally mediated measures. The essential first step is a clear conceptualization of the target construct. Item development and ensuring unidimensionality follow. Factor analysis can be crucial in establishing unidimensionality and discriminant…
Descriptors: Concept Formation, Construct Validity, Factor Analysis, Item Banks