A. to make sure the students were looking at the computer screen
B. to move the spider’s location around
C. to verify where the students were looking
D. to make the students look only in one place
Đáp án là C.
Để xác minh nơi các sinh viên đang nhìn. Dựa vào ý: In one trial, the students were asked to press the spacebar when they spotted a mushroom, but to ignore any spiders. In a second, the students were asked to press the key when they saw the spider, but to avoid looking at mushrooms.
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