A RCT is conducted to evaluate the effectiveness of a new co…

Questions

A RCT is cоnducted tо evаluаte the effectiveness оf а new cognitive training program in older adults. Participants are assigned to either the intervention group (cognitive training) or a control group (standard care). At baseline, both groups are similar in age, sex, education level, and cognitive scores. Participants in the intervention group are aware they are receiving the active treatment. As a result, they adhere more strictly to healthy lifestyle habits, and cognitive exercises compared to the control group. Results revealed the intervention group to have a significantly greater cognitive improvement. What type of bias most likely explains the difference in outcomes?

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