General personality tests, such as the Edwards Personal Preference Schedule, evaluate an individual on numerous personality traits. Unfortunately, such generalized test may provide some traits that are irrelevant for evaluating future salesperson success. However, some companies develop specialized test designed to measure specific personality traits felt to be important in a particular sale position, such as team building. Such test are generally thought to be a weaker approach than the others mentioned here, but they could provide useful information about candidates it properly validated by careful job analysis.