MCAT Question of the Day 120 – Psychology Given the description of the study in this passage, which unknown factor might have the most influence on the validity of the results?Sample sizeDuration of IBS symptoms before entering the studyParticipants’ previous exposure to medication to treat IBS symptomsLength of the treatment protocolsVote to see resultsVote By admin| 2015-10-29T07:45:38+00:00 November 23rd, 2015|Comments Off on MCAT Question of the Day 120 – Psychology Share This Story, Choose Your Platform! FacebookTwitterGoogle+Email
