Cronbach, Lee J.

Lee J. Cronbach was an influential psychologist best known for developing Cronbach’s alpha, a statistical measure used to assess the reliability or consistency of a set of test or survey items. Essentially, it evaluates whether multiple questions that aim to measure the same concept produce similar results. Cronbach's work helps researchers ensure their assessments are dependable, meaning the items work well together to accurately reflect the intended construct. His contributions have been fundamental in research design and psychological testing, fostering more accurate and meaningful measurement across various fields.