Lauren recently participated in a marketing study examining the effects of hunger on buying tendencies, but Lauren was unaware of what group she was assigned to. Lauren was later informed that the marketing researchers responsible for the study were also unaware of Lauren's group assignment at the time of the study. This is an example of:

Question

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This is an example of a double-blind procedure because both the participant (Lauren) and the researchers were unaware of the group assignment. This helps to prevent bias in the study's results.

Lauren Recently Participated in a Marketing Study Examining the Effects