A recent study told people they had either a good or bad genetic draw for aerobic exercise or hunger and satiety. Manipulating the subjects’ beliefs about their genetics changed both their objective and subjective responses to subsequent testing. This study builds upon prior literature showing that expectancy can influence outcomes to a surprising degree.
It’s becoming clear that a lot of published research is unreplicable and untrustworthy. How do incorrect findings occur, and how can we predict whether the results of a particular study are likely to be sound?