  For many people, social media is an important way to consume news on
important topics like health. Unfortunately, some influential health news is
misinformation because it is based on retracted scientific work. Ours is the
first work to explore how people can understand this form of misinformation and
how an augmented social media interface can enable them to make use of
information about retraction. We report a between subjects think-aloud study
with 44 participants, where the experimental group used our augmented
interface. Our results indicate that this helped them consider retraction when
judging the credibility of news. Our key contributions are foundational
insights for tackling the problem, revealing the interplay between people's
understanding of scientific retraction, their prior beliefs about a topic, and
the way they use a social media interface that provides access to retraction
information.
