External validity is strengthened by the use of volunteer samples.

Name: External validity is strengthened by the use of volunteer samples.
Brand: Quizplus
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Question

Quizplus · Accepted Answer

External validity is actually weakened by the use of volunteer samples because volunteer samples are often not representative of the general population. Those who volunteer for studies may have different characteristics and motivations than those who do not volunteer, which limits the generalization of study findings to the broader population.

External Validity Is Strengthened by the Use of Volunteer Samples