Neuropsychological assessment and psychological assessment are processes of evaluating conditions that affect a person’s thinking, mood, and behavior. These assessments are tailored to focus on the presenting complaints of the individual and offered in a manner that seeks to understand the unique factors influencing his or her functioning. Psychological assessment seeks to gain a better understanding of a person’s emotional experience, behavior, and personality. It is useful to help people understand events and patterns in their lives, as well as accurately diagnose psychological conditions and make informed and individualized treatment recommendations. Neuropsychological assessment often serves these functions as well, and also involves completing a variety of tests designed to measure brain functions such as attention span, cognitive flexibility, and memory. The diagnosis of brain damage, dementia, and amnestic disorders can be reached through neuropsychological assessment.