Employee testing and selection involves using various tools and techniques to select the best candidates for jobs. This includes assessing candidates through selection processes, basic testing techniques, background and reference checks, and work samples or simulations. Careful employee selection is important for performance, costs, and legal obligations. Employers must take reasonable steps to investigate candidates' backgrounds through methods like reference checks, databases, and social media to avoid negligent hiring claims. Common tests and techniques include cognitive and physical ability tests, personality tests, work samples, honesty tests, drug screens, and assessing immigration eligibility. The goal is to fairly and legally evaluate candidates' qualifications and suitability for positions.