Choosing to believe: How active sampling enhances the truth effect.
Moritz Ingendahl et al.
Abstract
Repeated exposure to information increases the credibility of this information, a well-studied phenomenon called the truth effect. While this phenomenon has been studied extensively by passively exposing people to preselected information pieces, in real-world contexts, people often sample information actively (e.g., by clicking on a headline on social media). In the present research, we propose and demonstrate in eight preregistered experiments (N = 953) that such active sampling of information increases the truth effect, leading to an enhanced belief in information one had initially been exposed to following one's active choice. We further test both stimulus-based explanations (i.e., people are more likely to sample information that is perceived to be more plausible) and processing-based explanations (i.e., sampling information boosts cognitive processes that also increase the truth effect), with evidence favoring the latter account. Overall, our findings imply that repeated exposure to information has a more profound influence on people's beliefs in settings where people actively choose which information they are exposed to. (PsycInfo Database Record (c) 2026 APA, all rights reserved).
1 citation
Evidence weight
Balanced mode · F 0.40 / M 0.15 / V 0.05 / R 0.40
| F · citation impact | 0.16 × 0.4 = 0.06 |
| M · momentum | 0.53 × 0.15 = 0.08 |
| V · venue signal | 0.50 × 0.05 = 0.03 |
| R · text relevance † | 0.50 × 0.4 = 0.20 |
† Text relevance is estimated at 0.50 on the detail page — for your query’s actual relevance score, open this paper from a search result.