Which specific mental shortcut does the text suggest causes the Barnum effect?

Question

Quizplus · Accepted Answer

The Barnum effect is caused by the representativeness heuristic, which is the tendency to judge the likelihood of an event based on how well it matches our preconceived stereotype of the category it belongs to. In the case of the Barnum effect, individuals are likely to find vague and general statements about themselves to be accurate because they believe them to be representative of their personality or character.

Which Specific Mental Shortcut Does the Text Suggest Causes the Barnum