Dual-processing theory – IB Psychology Study Notes

Comprehensive IB Psychology study notes on Dual-processing theory. Covers key theories, research studies, and evaluation points for the 2027 syllabus.

Mark Scheme SECTION A MARK SCHEME 4 marks Must Include: • System 1: fast, automatic, heuristic-based • System 2: slow, deliberate, logical/analytical • Heuristics: mental shortcuts that can cause errors • Conjunction fallacy as System 1 error • Linda Problem Tversky & Kahneman • System 1 violated probability rules • Judgment override without System 2 engagement Link Formula: "System 1 specific heuristic causes error, violating logical principle, unless System 2 deliberative process corrects it."...