Interventions to Decrease Cancer Information Avoidance

The study will test the efficacy and mediating mechanisms of brief video interventions including elements demonstrated to be effective in reducing health information avoidance (self-efficacy boosting, humor, calm affect induction). It is expected that the videos to benefit people who typically avoid health information yet still be beneficial for people who do not avoid health information, thus being suitable for dissemination to general audiences. It is hypothesized that the interventions will strengthen intentions to be screened, increase colorectal cancer risk information seeking and increase screening.

Following recommended practices, the two intervention arms and the control arm will include multiple versions of the videos to control for actor effects. All intervention videos operationalize the same psychological mechanisms but are delivered by 4 different actors and promote either colonoscopy or stool tests. The 8 parallel intervention and 4 control videos will be treated as random effects.

The intervention videos will be tested in members of the Ipsos panel who are not adherent to colorectal cancer screening guidelines, half of whom will be selected because they tend to avoid colorectal cancer information. Effects of the intervention videos will be compared to those of an attentional control video about food safety.