Definition Of Abnormality, Classification Systems And Demographics Of Psychological Disorders

3544 Words Apr 3rd, 2015 15 Pages
Definition of abnormality, classification systems and demographics of psychological disorders
The poster is going to outline the definition of abnormality and describe two diagnostic classification systems whilst referencing the diagnostic criteria for Schizophrenia and an overlook of its subtype catatonic schizophrenia.
An analysis of the validity, reliability, practicalities and ethical issues will be covered when referring to the diagnostic classification systems and lastly the demographics and statistics surrounding schizophrenia with reference to age, gender and ethnicity will be thoroughly examined
Statistical Infrequency
By using the statistical infrequency definition, a person’s way of thinking or behaviour is classified as abnormal if it is statistically unusual amongst a selected society. With this definition it is very important to decide how statistically rare a behaviour or trait is before it is classified as abnormal. For example a person who has a higher IQ level than the society’s average is then classified as abnormal but contrary to this a person would be highly regarded for their intelligence, this is due to the method failing to identify the appeal of that certain trait (Cardwell, Clark and Meldrum, 2008).
As mentioned the definition ignores desirability of some behaviours and traits, it also does not take in to account of cultural differences and it is not clear by how much a behaviour should deviate from what’s normal for it to be considered abnormal…
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