Dan was certain that his upcoming economics test would be so easy that he could wait to study until the night before and still do well on the exam. When he cracked open his book and notes the night before the exam, he realized he should've started studying earlier. According to behavioral economics, Dan's error was caused primarily by

Question

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A planning fallacy is a cognitive bias that causes people to underestimate the amount of time it will take to complete a task. In this case, Dan underestimated the amount of time it would take him to study for the economics test, and as a result, he did not start studying until the night before the exam.

Dan Was Certain That His Upcoming Economics Test Would Be