A researcher testing a new cholesterol medication develops a…
A researcher testing a new cholesterol medication develops a placebo that is visually indistinguishable from the study medication (each pill has the same color, shape, size, etc.). A study nurse will call every participant each week and ask them if they’ve experienced any side effects, regardless of experimental condition (that is, regardless of whether participants receive the new anxiety medication or the placebo pill). In doing this, the researchers were most likely attempting to control for _________.