What is your recommendation for ability tests in making selection decisions? Any test that measures reading and writing skills can discriminate against someone whose native language is not English. Physical ability tests such as strength can discriminate against female candidates and also should be considered carefully before put into use

Adverse impact happens when job applicants in a legally protected class, for example women or racial minorities, are hired at a lower rate than non$-$protected classes. The threshold is $80\%$ of the majority hiring rate, or the $4/5$ths rule.$$

Do you think ability tests have a place in selection decisions or do you think they should be avoided when making hiring decisions? Please provide a basis for supporting your position.