I can affirm that I expected the term to refer to something different, namely an effect that causes people to do worse based on their concerns surrounding an intervention, such as in this study on intercessory prayer, where the individuals who knew they were being prayed for did worse than the other groups, possibly because they were concerned that they were so badly off that they needed people to pray for them.
I can affirm that I expected the term to refer to something different, namely an effect that causes people to do worse based on their concerns surrounding an intervention, such as in this study on intercessory prayer, where the individuals who knew they were being prayed for did worse than the other groups, possibly because they were concerned that they were so badly off that they needed people to pray for them.