2Running Header: Benchmark- Models of AbnormalityBenchmark- Models of AbnormalityAbnormal psychology is known as the scientific study of abnormal behavior that tends to describe, or predict behavior, it is the field that is devoted to problems, emotions, thoughts and behaviors (Comer, 2018). Abnormality can be seen to be distant from what a society standpoint or norms and culture, behavior that is seen unnormal. To understand abnormality one can see it using the models of abnormality. Using the different models of abnormality can demonstrate assumptions and set guidelines developmental Psychopathology Perspective, one can utilize this perspective by using it as a framework for development. Doing so will allow a person’s abnormalbehavior to be used using genetics a how the environment plays a role. Using each model will allow the developmental psychopathology perspective to be in use (Conner, 2018). This perspective however also uses different diagnosis in the clinic as well giving sets of attentions to clients using equifinality and multifocality. These two principles all go back to biological and structures in families as well as environments. Showing for further searching in abnormality as well as treating mental disorders. Therefore, the purpose of this paper is to identify the six models of abnormality; biological psychodynamic, cognitive-behavioral, human-existential, sociocultural (family-social and multicultural) and the developmental psychopathology perspective. While providing examples and demonstrating application and treatment of the six models of abnormality.