Psychological Testing » Education Articles

The accuracy, or usefulness, of a test is known as its validity. For example, suppose you wanted to develop a test to determine which of several job applicants would work well in a bank. Would an arithmetic test be a valid test of job success? .... Hence its technical name, the polygraph, a word composed of poly- (from the Greek poly, many) and -graph (from the Greek graphos, writing) in reference to the instrument's multiple recording channels. ...