Syllabus Edition

First teaching 2025

First exams 2026

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Characteristics of OCD (AQA AS Psychology): Revision Note

Exam code: 7181

Claire Neeson

Written by: Claire Neeson

Reviewed by: Raj Bonsor

Updated on

Characteristics of OCD

  • Obsessive-Compulsive Disorder (OCD) is an anxiety disorder which is characterised by persistent, intrusive thoughts and repetitive behaviours

  • Obsessions take the form of intrusive, persistent thoughts, e.g.,

    • 'Germs are everywhere; they could harm me and my family'

    • 'The outside world is a terrifying and dangerous place so I must do what I can to protect myself and my family'

  • Compulsions take the form of repetitive behaviours, e.g.,

    • 'I must wash my hands thoroughly every time I touch any sort of surface'

    • 'I must check that I've locked the door at least seven times before I go to bed'

Behavioural characteristics of OCD

  • Compulsions, which tend to be repetitive and time-consuming and are adhered to obsessively by the person with OCD, e.g.,

    • hand-washing (a highly prevalent OCD behaviour)

    • continual organising or re-arranging of food cupboards or bookshelves

    • switching a light on and off a set number of times

  • Compulsions are performed to reduce anxiety

    • Repetitive hand-washing may reassure the person with OCD that they will not contract a disease

    • Checking that the door is locked several times before bed may reassure the person that they and their family are safe

  • Avoidance is a key characteristic of OCD

    • Someone with OCD is likely to try and avoid situations that may trigger their obsessive thoughts and compulsive behaviours

      • People may avoid all social engagements due to their fear of contracting a germ-borne disease

      • Avoidance may lead to the OCD person becoming cut off from friends, family and contact with the outside world

Emotional characteristics of OCD

  • Extreme levels of anxiety, fear, and feelings of being overwhelmed

  • Guilt directed towards themselves or as a result of neglecting friends, family, work, etc.

  • Disgust directed towards themselves or the outside world

  • Depression (having more than one mental illness at a time is known as comorbidity) due to feeling 'trapped' by their obsessions and compulsions

Cognitive characteristics of OCD

  • Obsessive thoughts (these affect 90% of people with the illness)

  • The use of coping mechanisms to deal with the obsessive thoughts, e.g.,

    • identifying the obsessive thought as it occurs (e.g., 'There's that feeling of panic about germs again')

    • using a grounding object such as a pebble or wristband to remind the person that they should stop their obsessive thoughts

  • Awareness that their anxiety and fear are irrational

    • This awareness may help to control the fear (but not necessarily; fear can spiral regardless of the application of logic)

  • Catastrophising around their OCD, e.g.,

    • 'I can't find anywhere to wash my hands properly; this is terrible; I might die'

Examiner Tips and Tricks

Characteristics of OCD often come up as a multiple-choice or low-mark question in the exam.

You need to know the difference between the emotional, behavioural and cognitive characteristics of OCD, as you could get asked about any of these independently.

It is also important to be able to distinguish between obsessions and compulsions. In this case, you should use a term like "whereas" in your response.

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Claire Neeson

Author: Claire Neeson

Expertise: Psychology Content Creator

Claire has been teaching for 34 years, in the UK and overseas. She has taught GCSE, A-level and IB Psychology which has been a lot of fun and extremely exhausting! Claire is now a freelance Psychology teacher and content creator, producing textbooks, revision notes and (hopefully) exciting and interactive teaching materials for use in the classroom and for exam prep. Her passion (apart from Psychology of course) is roller skating and when she is not working (or watching 'Coronation Street') she can be found busting some impressive moves on her local roller rink.

Raj Bonsor

Reviewer: Raj Bonsor

Expertise: Psychology & Sociology Content Creator

Raj joined Save My Exams in 2024 as a Senior Content Creator for Psychology & Sociology. Prior to this, she spent fifteen years in the classroom, teaching hundreds of GCSE and A Level students. She has experience as Subject Leader for Psychology and Sociology, and her favourite topics to teach are research methods (especially inferential statistics!) and attachment. She has also successfully taught a number of Level 3 subjects, including criminology, health & social care, and citizenship.