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Those of us in the business of psychological measurement use the terms reliability and validity a lot. You've probably seen those terms on the Psychology Today website (they appear thousands of times) ...

The Turkish version of the RCAC Scale demonstrated cultural relevance, validity, and reliability in assessing fertility concerns of women with cancer in this population.

In my previous blog post, I noted that reliability and validity are two essential properties of psychological measurement. Measures of intelligence, personality, vocational interests, and so forth ...