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1. Wellness program participants cost less than non-participants, therefore the programs are effective.
Fact: People who volunteer (or are paid) to join a program always will outperform people who don’t. Instead, to make a valid comparison, you need to randomly divide volunteers into equal groups, give each group the same financial incentive and then administer the wellness program for just one group. This would create two equally compensated and motivated experimental and control groups. [Image: Shutterstock]