The illusory certainty: information repetition and impressions of truth enhance subjective confidence in validity judgments independently of the factual truth

People not only judge repeatedly perceived information as more likely being true (the so-called truth effect) they also tend to be more confident after judging the validity of repeated information. These phenomena are assumed to be caused by a higher subjective feeling of ease (i.e., fluency) when p...

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Main Authors: Stump, Annika (Author) , Voß, Andreas (Author) , Rummel, Jan (Author)
Format: Article (Journal)
Language:English
Published: 25 March 2024
In: Psychological research
Year: 2024, Volume: 88, Issue: 4, Pages: 1288-1297
ISSN:1430-2772
DOI:10.1007/s00426-024-01956-7
Online Access:Resolving-System, kostenfrei, Volltext: https://doi.org/10.1007/s00426-024-01956-7
Verlag, kostenfrei, Volltext: https://link.springer.com/article/10.1007/s00426-024-01956-7#citeas
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Author Notes:Annika Stump, Andreas Voss, Jan Rummel

MARC

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520 |a People not only judge repeatedly perceived information as more likely being true (the so-called truth effect) they also tend to be more confident after judging the validity of repeated information. These phenomena are assumed to be caused by a higher subjective feeling of ease (i.e., fluency) when processing repeated (vs. new) information. Based on the suggestion that a higher number of coherent mental activations is promoting a fluency experience, we argue that besides repetition an already existing information network, that is (nonspecific) prior knowledge, can enhance fluency. Following this argumentation, information repetition as well as the act of judging incoming information as being true (vs. false) should feed into subjective confidence - independently of the factual truth (when judging under uncertainty). To test this, we reanalyzed two published data sets and conducted a new study. In total, participants (N = 247) gave 29,490 truth judgments and corresponding ratings of subjective confidence while attending two judgement phases (i.e., 10 min and 1 week after the exposure phase in each experiment). Results showed that (a) repetition (in 3 of 3 data sets) and (b) impressions of truth (in 2 of 3 data sets) were systematically related to higher subjective confidence. Moreover, we found (c) a significant positive interaction between repetition and impressions of truth after both intervals in all data sets. Our analyses further underline the moderating effect of time: Influences of repetition significantly decreased with increasing time interval. Notably, the factual truth did not systematically affect any of the above reported effects. 
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