Animal research / animal models – IB Psychology Study Notes

Comprehensive IB Psychology study notes on Animal research / animal models. Covers key theories, research studies, and evaluation points for the 2027 syllabus.

Mark Scheme SECTION A MARK SCHEME 4 marks Must Include: • Biological continuity across species • Homologous structures similar biology, shared ancestry • 3Rs: Replacement alternatives, Reduction minimize animals, Refinement minimize suffering • Named animal model e.g. rats • Animal finding linked to human equivalent • Homology assumption explicitly stated Link Formula: "Animal models like species share homologous structure/system with humans, enabling ethical research that extends to human behav...