Well, researchers don't know exactly. The construct of shyness is like the construct graviton in theoretical physics, which is hypothesized to play a role in gravitational force.

Cite this: Cross-Sectional and Longitudinal Construct Validity of Two Rotator Cuff Disease-Specific Outcome Measures - Medscape - Mar 13, 2006.

If you think you have construct validity but you only have predictive validity, you may be able to make correct predictions based on the results of your measurement, but your predictions will not ...

Lissitz and Samuelsen (2007) have proposed a framework that seemingly deems construct validity evidence irrelevant to supporting educational test meaning. The author of this article agrees with ...

Cite this: Cross-Sectional and Longitudinal Construct Validity of Two Rotator Cuff Disease-Specific Outcome Measures - Medscape - Mar 13, 2006.

This paper addresses the problem of construct validity in measures of life satisfaction and well-being through an analysis of unsolicited comments made by respondents during face-to-face interviews.

Construct validity was assessed for each of the five-selected nutrient profiling systems by testing whether healthy foods (that is, identified as eligible by the system) make healthy diets, and ...

Taking the measure of net promoter score: An assessment of construct and predictive validity Susana Jaramillo, George Deitz, John D. Hansen, and Emin Babakus Although the lay appeal of the Net ...