In a carefully designed study, researchers where study participants were randomly assigned to groups found that the group exposed to the intervention and the group that received a placebo intervention had similar positive response when tested at the conclusion of the study.
What is the best explanation of this result.
Options:
1) The researchers were not very experienced and did not know how to conduct a study.
2) The control group might have found the attention they received by being in the study an intervention with a positive effect.
3) The groups must not have had equivalent scores on the pre-test?
4) either/both responses 2 and 3 Here’s the explanation you needed for… View the full answer
