A test with a validity coefficient of .25 is considered good under which condition?

A test with a validity coefficient of .25 is considered good under which condition?

• A. Only when base rates are low
• B. When many applicants apply
• C. In all hiring contexts
• D. When selection ratio is high

Answer: (B)

A modest validity coefficient is most valuable when there are many applicants. When a large pool applies, the selection ratio is low, meaning you hire only a small fraction of candidates. In that situation, even a small correlation between test scores and job performance helps you screen out more low-potential applicants and identify potential high performers, making the test’s predictive value more impactful in the overall hiring outcome. If the applicant pool is small or you’re hiring most applicants (high selection ratio), a .25 validity contributes less to improving decisions, so it wouldn’t be considered as good.

A modest validity coefficient is most valuable when there are many applicants. When a large pool applies, the selection ratio is low, meaning you hire only a small fraction of candidates. In that situation, even a small correlation between test scores and job performance helps you screen out more low-potential applicants and identify potential high performers, making the test’s predictive value more impactful in the overall hiring outcome. If the applicant pool is small or you’re hiring most applicants (high selection ratio), a .25 validity contributes less to improving decisions, so it wouldn’t be considered as good.