TOEFL Speaking Task 3

Illusory Correlation is a cognitive bias where people perceive a relationship between two variables even when no such relationship exists. This often occurs because the co-occurrence of two events is salient or memorable, leading individuals to overestimate the frequency of their joint occurrence. In academic contexts, this can affect how students interpret study habits, teaching methods, or even social behaviors, causing them to draw incorrect conclusions based on anecdotal evidence rather than systematic data.

Professor: Let me give you a classic example. I once had a student named Sarah who believed that drinking coffee right before an exam always made her perform worse. She told me that on two separate exams where she had a large coffee, she got lower scores than usual. She started avoiding coffee entirely on test days. However, when I looked at her grades over the semester, there was no consistent pattern—she had other exams with coffee where she did fine, and exams without coffee where she did poorly. The two bad experiences were just coincidental, but because they stood out in her memory, she incorrectly assumed a cause-and-effect relationship. Sarah fell for illusory correlation, ignoring the many times coffee had no negative effect.