Participants in trials of an experimental intervention are asked to track their daily food and liquid intake during the length of the trial period. Which of the following statements would best explain why the participants report higher-than-average water intake and lower-than-average intake of juices and sodas when compared with the general population?
A) Type II error
B) Hawthorne effect
C) Instrumentation error
D) Double-blind experimental design

Question

Quizplus · Accepted Answer

The Hawthorne effect refers to the phenomenon where individuals modify their behavior in response to being observed or knowing they are part of a study, leading participants to report healthier behaviors such as higher water intake and lower consumption of juices and sodas.

Participants in Trials of an Experimental Intervention Are Asked to Track