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.
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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