Using the right assessments is important to predict performance when selecting employees. That makes it critical to measure the right factors and using the best metrics when evaluating potential candidates. With that in mind, if you want to hire the best employee...

Using an established indicator like a candidate's GPA adds validity to their predictability of overall performance.

Using a "gut check" interview to make a final decision is typically the best approach as it determines whether the hiring manager can make a personal connection which matters more than technical qualifications.$$

Using a candidate's high GPA may not be the best indicator of a candidate's ability because it only measures one aspect of performance.$$

Personality tests are great predictors of performance because they incorporate reliable algorithms that are time tested.$$