Final answer:
The representativeness heuristic can lead to the conjunction fallacy as it makes individuals erroneously judge combined events as more likely than a single event.
Step-by-step explanation:
The representativeness heuristic can lead to the conjunction fallacy by causing individuals to judge the probability of two events occurring together (the conjunction) as more likely than a single general event. This is due to the heuristic leading individuals to see a combination of specific conditions as more representative of a certain situation than a broader category that actually encompasses those conditions. A classic example is Tversky and Kahneman's Linda problem, where participants judged it more likely that Linda was a bank teller and a feminist activist (the conjunction), rather than just a bank teller (a single general event), despite the fact that the probability of two events occurring together is always less than or equal to the probability of either one occurring alone. This illustrates how reliance on the representativeness heuristic can overshadow logical statistical reasoning.