This document discusses employee testing and selection. It covers why testing and selection is important, including improving performance and reducing costs and legal risk. It defines reliability and validity in testing. It describes the basic categories of selection tests, including cognitive abilities, motor/physical, personality, interests, and achievements tests. It discusses using work simulations like situational judgment tests and assessment centers for selection. It also covers improving background checks, such as using social media, pre-employment screenings, polygraphs, and honesty tests.