Personality tests can be beneficial to some doctors when they are striving to diagnose psychiatric disorders, and they are informative to law enforcement when they are trying to understand the actions of a serial killer. Additionally, certain types of tests can be helpful to school systems (to keep from hiring a sex-offender, for example), or manufacturers or sellers of firearms (to keep the mentally ill from purchasing a weapon), or even to financial institutions (to ensure that millions are stolen from customers). Doctors, law enforcement, and the military (in these examples), are trained in the uses of personality tests. Continue reading...