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Neurotransmission

The process of neurotransmission and its influence on human behaviour.

How often is this tested?

Tested 5 times in the last 7 years — 2.2% of all P1 past-paper questions (5 of 228).

Most often tested as Essay: Discuss (22 marks).

Based on OwlsPrep's analysis of official CIE IB_PSYCH past papers (2019–2025).

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