TABLE 1:

FORMAL RESEARCH QUESTIONS AND ASSOCIATED OUTCOMES

Research Questions	Outcomes
1. Does inclusion of the toll-free statement impact comprehension of drug risk and benefit information?	Toll-free statement not disruptive in any condition
Contingent on toll-free statement impacting risk and benefit comprehension: 2. Does placement of the toll-free statement during the whole ad or at the end of the ad versus the beginning of the ad allay any negative impact on drug risk and benefit comprehension? 3. Does whole ad presentation versus shorter presentation allay any negative impact on drug risk and benefit comprehension?
4. Across designs, do participants who view an ad with the toll-free statement have greater comprehension of and memory for the toll-free statement than participants in a control condition who viewed an ad without the toll-free statement?	Participants who viewed an ad with the toll-free statement demonstrated superior comprehension of and memory for the toll-free statement
5. Among placement conditions, is comprehension of and memory for the toll-free statement best when the statement is presented after information about risks and benefits?	Placement of the toll-free statement after the risk and benefit information did not result in superior comprehension and memory, although there was some evidence that processing is worsened when toll-free statement is presented before the major statement
6. Among duration conditions, do participants in the “whole ad” presentation produce superior comprehension and memory for the toll-free statement?	Toll-free statement comprehension and memory not impacted by duration
7. Among prominence conditions, does addition of audio to the text-only presentation (both full text and short text) improve comprehension of and memory for the toll-free statement?	Dual modality (audio plus text) presentation resulted in superior comprehension of and memory for the toll-free statement