MCAT Behavioral Sciences Question 42: Answer and Explanation

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Question: 42

12. A researcher uses a partial-report procedure after presenting participants with an array of nine numbers for a fraction of a second. Which of the following is the most likely result of this procedure?

  • A. The participant will be able to recall any of the rows or columns in great detail but only immediately after presentation.
  • B. The participant will only be able to recall the first few numbers in the array due to the serial position effect.
  • C. The participant will be able to recall approximately seven of the numbers for a few seconds following presentation of the stimulus.
  • D. The participant will not be able to recall any of the numbers verbally, but will be able to draw the full array under hypnosis.

Correct Answer: A

Explanation:

Partial-report procedures, in which the individual is asked to recall a specific portion of the stimulus, are incredibly accurate, but only for a very brief time. This is a method of studying sensory (specifically, iconic) memory. Both the serial position effect, choice (B), and the 7 ± 2 rule, choice (C), are characteristics of short-term memory.

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