Reliability, Construct Validation, and Scale Construction
from Part IV - Understanding What Your Data Are Telling You About Psychological Processes
Published online by Cambridge University Press: 12 December 2024
Adequate measurement of psychological phenomena is a fundamental aspect of theory construction and validation. Forming composite scales from individual items has a long and honored tradition, although, for predictive purposes, the power of using individual items should be considered. We outline several fundamental steps in the scale construction process, including (1) choosing between prediction and explanation; (2) specifying the construct(s) to measure; (3) choosing items thought to measure these constructs; (4) administering the items; (5) examining the structure and properties of composites of items (scales); (6) forming, scoring, and examining the scales; and (7) validating the resulting scales.
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