Practice IB Psychology (First Exam 2027) Topic 2.1 Biological Approach with authentic exam-style questions for both SL and HL students. This question bank focuses on the exact syllabus content for 2.1 Biological Approach and mirrors Paper 1, 2, 3 style where relevant.
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In a learning task, animals received a small reward for pressing a lever. Recordings showed bursts of dopamine activity when an unexpected reward arrived, and over time this activity shifted to the cue that predicted the reward.
With reference to this study, explain the role of a neurotransmitter in learning.
Researchers followed pregnant women who reported their stress levels and gave samples to measure cortisol. Infants of mothers who had higher prenatal stress and cortisol later showed, on average, stronger reactions to mild novelty and took longer to settle.
With reference to this study, explain how hormones may influence early development.
Describe the role of one neurotransmitter in human behaviour.
Describe one evolutionary explanation of one human behaviour.
One claim in the psychology of human development is that biological maturation drives adolescent behaviour. Discuss this claim with reference to one or more relevant studies.