IB Psych SL/HL notes for the Biological Approach. Includes all notes on each subtopic under the syllabus. SL: (1) Brain & Behaviour; (2) Genes & Behaviour; (3) Genetic Similarities; (4) Evolutionary Explanations for Behaviour. Notes include study breakdowns & through descriptions for the entire SL component of the biological approach, extensive content for each subtopic, all relevant theories & models, and additional information. Each study includes an extensive critical thinking / evaluation, including real life applications, strengths & limitations, assumptions & biases, alternative explanations, etc. I achieved a level 7 in HL Psychology for the November 2019 exams.