IB Psychology HL & SL Core subjects and Human Relationships notes Carly00 These notes cover Biological, Cognitive, Sociocultural Approach core subjects and Psychology of Human Relationships HL subject. Grade 7 was received. Biological approach – $5.00 Cognitive approach – $5.00 Sociocultural approach – $5.00 Human relationships – $5.00 Add to Cart Checkout Added to cart