Scientific Study of Personality IntroductionThis paper will define personality and provide an overview of the definition of personality; it will discuss the three most commonly used methods used in the research of personality the methods that will be discussed are studies, correlational design, and experimental designs or true experiments. This paper also explain each method differs, it also include what type of information each method provides, this paper will conclude with what advantages and disadvantages of each method. Psychologists’ definition of personalityAccording to the APA.org personality refers to individual differences in characteristics patterns of thinking, feeling, and behavior (APA.org, n.d.). The study of personality focuses on two broad areas: one is the understanding of individual differences in particular personality characteristics, such as sociability and irritability (APA.org, n.d.). The other is the understanding of how the various parts of a person come together as a whole (APA.org, n.d.). An overview of the definition of personality In order to give an overview of the definition of personality it is better to start with the meaning of personality, the word personality comes from the Latin word persona, which is referred to as a theatrical mask work by performers in order to either project different roles or to disguise their identities (Cherry, 2015). An overview of the definition of personality is a simple one: personality refers to a person’s thoughts, feelings, and behaviors. Personality is what makes an individual unique and different from everyone else. Case Studies Clinicians feel that case studies and clinical research is the best method to truly delve into a person’s personality as it enables the clinician to dissect any fragment of personality. This is the method that is used when treating a person and/or developing a personality theory. When a professional treats the patient using this method it gives them the ability to come back at a later time and develop a more detailed theory. This method like any other methods has its advantages and disadvantages, case studies and research can accomplish a lot of goals that are outlined in different approaches. This approach can create new knowledge, test a hypothesis, and may also solve problems. When this method is used the clinician or researcher can conduct the study while avoiding the issues with statistics and issues that may be found in empirical approaches (Schwartz, Cieciuch, & Vecchione, 2012).