The APA Thesaurus offers the following definition: Analysis, evaluation or prediction of disordered or abnormal behavior, symptoms, or other aspects of psychological functioning, includes assessing the appropriateness of a particular treatment and the degree or likelihood of clinical improvement.
Preconceived definition, to form a conception or opinion of beforehand, as before seeing evidence or as a result of previously held prejudice. See more. Dictionary.com
The definition of conceited is someone who is vain or has an enlarged ego or opinion of themselves. An example of conceited is someone talking about how beautiful and popular they are. having an exaggerated opinion of oneself, one's merits, etc.; vain.