Dr Merrick Designs a Study Comparing the Effects of Mindfulness

Multiple Choice

Dr. Merrick designs a study comparing the effects of mindfulness training to cognitive training on flexible thinking. In designing this study, what would be an appropriate manipulation check?

A) Testing that the flexible thinking task is hard enough to show group differences
B) Measuring heart rate to ensure that mindfulness has a calming effect
C) Ensuring that no participants had prior experience with mindfulness training
D) Adding a third group that receives flexibility training