"If a person is drinking a beer,then the person must be over 19 years old." Participants are asked to test this rule using information on four cards;each card has a person's beverage on one side and the person's age on the other.The four cards are now presented as follows: "beer," "coke," "16 years old," and "20 years old." Which of the following describes the behavior of most college students who complete this variation of the four-card task?
A)Most turn over only the "beer" card.
B)Most turn over the "beer" and "20 years old" cards.
C)Most turn over the "beer" and "16 years old" cards.
D)Most turn over the "beer" and "coke" cards.

Question

Quizplus · Accepted Answer

To test the rule effectively, participants need to check if the person drinking beer is over 19 (hence, check the "beer" card) and if the person who is under 19 is not drinking beer (hence, check the "16 years old" card).

"If a Person Is Drinking a Beer,then the Person Must