Unstructured interviews have an r2 of 0.14, meaning that they can explain only 14 percent of an employee’s performance.xxiii This is somewhat ahead of reference checks (explaining 7 percent of performance), ahead of the number of years of work experience (3 percent), and well ahead of “graphology,” or handwriting analysis (0.04 percent), which I’m stunned that anyone actually uses. Maybe some hospitals test the legibility of doctors’ handwriting.…
