Standardizing elements like distance and net height in a serving assessment primarily supports which psychometric properties?

• A. Validity and reliability
• B. Face validity
• C. Predictive validity
• D. Discriminant validity

Answer: (A)

Standardizing how the test is conducted—keeping distance, net height, and other conditions the same for everyone—removes extra sources of variation that could affect scores. When the administration is uniform, differences in scores more accurately reflect differences in serving ability rather than differences in setup or procedure, which makes the results more reliable (consistent across trials and test-takers). It also supports validity, because the test is measuring the intended serving skill under a controlled context, reducing confounding factors that could distort what the score represents. Concepts like face validity, predictive validity, or discriminant validity aren’t as directly improved by standardization in the testing procedure itself.