# 49. Manipulation of bias and heuristics in decision making ## 49.5. Methodology/Refinements/Sub-species ### 49.5.32. Illusory correlation This is the tendency to inaccurately perceive a causal relationship between two unrelated events. A manipulator can create an illusion in some victims that a causal relationship exists between two or more events, when actually a more thorough evaluation proves that the events are unrelated or are not directly related.