MCAT Math Question 30: Answer and Explanation

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Test Information

Question: 30

15. Use of a colorimetric assay to determine protein concentration may be subject to all of the following EXCEPT:

  • A. the use of standards.
  • B. measurement error.
  • C. the Hawthorne effect.
  • D. systematic error.

Correct Answer: C

Explanation:

The Hawthorne effect—a change in behavior as a result of the knowledge that one is being observed—is only present with human subjects. Basic science research generally does not suffer from the Hawthorne effect.

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