Optimize Hire pre-employment tests evaluate candidates on traits proven by decades of research to predict success at work.  Below, we outline the best and worst predictors of job performance based on the research of the top industrial and organizational psychologists in the world. Sometimes people are surprised by these findings and it’s common for companies to use bad predictors to evaluate candidates. If this is you, consider re-evaluating your process and adopt a strategy to screen candidates based on data-driven solutions.