Digestif: Promoting Science Communication in Online Experiments.

Online experiments allow researchers to collect data from large, demographically diverse global populations. Unlike in-lab studies, however, online experiments often fail to inform participants about the research to which they contribute. This paper is the first to investigate barriers that prevent researchers from providing such science communication in online experiments. We found that the main obstacles preventing researchers from including such information are assumptions about participant disinterest, limited time, concerns about losing anonymity, and concerns about experimental bias. Researchers also noted the dearth of tools to help them close the information loop with their study participants. Based on these findings, we formulated design requirements and implemented Digestif, a new web-based tool that supports researchers in providing their participants with science communication pages. Our evaluation shows that Digestif's scaffolding, examples, and nudges to focus on participants make researchers more aware of their participants' curiosity about research and more likely to disclose pertinent research information.