Bibliography (10):

1. Impact of valid selection procedures on work-force productivity

2. The Relationship Of Validity Coefficients To The Practical Effectiveness Of Tests In Selection: Discussion And Tables

3. Fairness in Employment Testing: Validity Generalization, Minority Issues, and the General Aptitude Test Battery

4. 1947-dubois-theclassificationprogram.pdf#page=143

5. Wikipedia Bibliography:

   1. https://en.wikipedia.org/wiki/Criterion_validity

      https://en.wikipedia.org/wiki/Criterion_validity

   2. Socioeconomic status

   3. Variance

   4. Standard error

   5. https://en.wikipedia.org/wiki/Point-biserial_correlation_coefficient

      https://en.wikipedia.org/wiki/Point-biserial_correlation_coefficient

   6. https://en.wikipedia.org/wiki/Stanine

      https://en.wikipedia.org/wiki/Stanine