Psychological evaluations are often the first line of defense in treating mental illness. These tests help psychologists determine the nature and severity of a person’s mental illness while giving insights into treatment options. A clinician has a variety of assessment tools available based on the reasons for evaluation. Also, psychological testing can detect developmental delays in children, give insights into an individual’s personality, and assess intelligence and aptitude. The purpose behind many modern psychological evaluations is to try to pinpoint what is happening in someone’s psychological life that may be inhibiting their ability to behave or feel in more appropriate or constructive ways; it is the mental equivalent of physical examination. Other psychological evaluations seek to better understand the individual’s unique characteristics or personality to predict things like workplace performance or customer relationship management.