Updated for AQA 2025 Spec – Teaching from SEPTEMBER 2025 onwards

This fully editable lesson covers Biological Explanations for Obsessive-Compulsive Disorder (OCD) for AQA A-Level Psychology (2025 Specification), including genetic and neural explanations.

Students explore candidate genes, the polygenic nature of OCD, aetiological heterogeneity, serotonin and differences in brain functioning. The lesson develops AO1, AO2 and AO3 through retrieval practice, Think, Pair, Share activities, application and structured evaluation.

What’s Included:
• Fully editable lesson PowerPoint
• Retrieval and Think, Pair, Share activities
• Key-term consolidation task
• AO2 case-study application task with answers
• Detailed AO3 evaluation activity and worksheet
• Stretch and extension questions with suggested answers
• 16-mark essay-planning worksheet
• Model essay plan and model paragraph
• Plenary activity

Updated for the AQA 2025 specification, with structured opportunities to develop knowledge, application, evaluation and exam skills.

If you’re looking for the 2019 specification version of this topic, please visit my shop.