A2 Psychology- Dysfunctional Behavior

Dysfunctional behaviour.

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Diagnosis- DSM & ICD

Diagnostic tools used in the Western World.

ICD-10= The International Classification of Diseases-

  • Published by WHO ('World health organisation')
  • Existing its 10th revision
  • Consists of 10 main groups
  • Diagnoses mental and physical disorders
  • Lists a disorder and a number of symptoms of associated with the disorer- allowing for either a confident or fairly confident diagnosis to take place.
  • Has 10/11 categories and the criterea for 100 disorders

DSM= Diagnostic and statistical manual of mental disorders-

  • Consists of 5 Axis for consideration
  • Main categories for disorders are axis 1 and 2
  • Has 17 Categories and criterea for 300+ disroders
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Evaluation of tools-

  • 3 main reasons for using the systems....1. Aids communication between professionals 2. Allows groups to be compared so the causes fo disorders can be researched 3. Helps provide best treatment.
  • Reliability- Do all psychiatirists use the same systems and get the same diagnosis?? (Pedersen et al- 71% NOT 100!)
  • Validity- Does the system allow for correct doagnosis??===> draw back to AS what did Rosenhan find? Type 1 errors until pointed out then type 2 errors.
  • Usefullness- Gives us a base. What if we didn't have the systems? How would we diagnose?
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Diagnosis- Rosenhan and Seligman

Abnormal Psychology

  • Statistical infreqrency- 'abnormality' is used to refer to behvaiors that are not seen regulary in everyday activity e.g exceptionally high IQ.
  • Deviation from social norms- if society does not see the behavior as normal then it is dysfunctional, suffers from ethnocentrism.
  • Failure to function adequetly- behaviours that prevent an individual from living an independent life.
  • Deviation from ideal mental health- idea of good mental health is subjective to cultures, i,e. Jahodas criterea is very western.
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Diagnosis- Ford and Widiger

Sex bias in the diagnosis of disorders

Aim- to find out if practioners were sterotyping genders when diagosing disorders.


  • Self report- health practioners were given scenarios and asked to make daignoses based on the information
  • IV= Gender of patient
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thank you!!!!

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