Personality disorders are chronic and persistent behavioral and emotional disturbances that are often difficult to treat. Some professionals have argued that these disorders are not mental disorders at all, but personality stylesthat these individuals are just oID or unusual. Review your textbook and a minimum of two peer-reviewed references and discuss the diagnostic and measurement challenges and issues related to personality disorders. What classification approach is currently used in the DSM? Explain this approach. Identify and discuss relevant research on the causation, diagnosis, and treatment of personality disorders.Your assignment should be at least a 23-page paper in Word format. Apply APA standards to citation of sources and include a cover page and reference page. Use the following file naming convention: LastnameFirstInitial_M4_A2.doc.By , deliver your assignment to the .