External validity is compromised by which one of the following?
Correct answer: A. Telling experimental participants about the hypotheses that they are not being tested as such
- A. Telling experimental participants about the hypotheses that they are not being tested as such
- B. Informing participants that they are not being 'tested' as such
- C. Telling them that the data they produce is confidential and will not be discussed with any third party
- D. Telling participants that they can withdraw from the experiment at any time and that they can ask that the data they generate be deletedDiscover Lesson Plans
Explanation
Giving participants the hypotheses can create demand characteristics, causing them to alter their behaviour and making the findings less representative of behaviour in ordinary conditions. The other statements are standard ethical information and do not normally threaten external validity.
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