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P E Ketelaar

Biographic Data

ID6640779
NAMEP E Ketelaar
GIVEN NAMESP E
FAMILY NAMEKetelaar
SIGNATUREKETELAAR P E
AFFILIATIONSRadboud University Nijmegen
ORCID0000-0002-6070-3010
VERIFIEDYes
TOTAL WORKS6
TOTAL CITATIONS3
WORKS AS AUTHOR6
WORKS AS EDITOR0
FIRST PUBLICATION YEAR2015
LATEST PUBLICATION YEAR2026
H-INDEX1
  • Investigating perceived trust and utility of balanced news chatbots among individuals with varying conspiracy beliefs

    Open Access•Shreya Dubey, P E Ketelaar et al.•ARTICLE•Computers in Human Behavior•2026

    In the current media landscape, various ideas and narratives gain traction, influenced by the dynamics of selective exposure and a decline in trust in traditional information sources. This trend holds the potential to cultivate polarization of perspectives, as individuals actively seek information that resonates with their existing attitudes. Hence, diversifying information that is available online can encourage users to engage with multiple pers…

  • To beautify or uglify! The effects of augmented reality face filters on body satisfaction moderated by self-esteem and self-identification

    Open Access•I R Dijkslag, Leonard Block Santos et al.•ARTICLE•Computers in Human Behavior•2024

    Beautifying augmented reality face filters (AR-FF) have been linked to reduced body satisfaction, particularly in young women. Social comparison theory has been used to explain this negative effect through upward social comparisons against the beautified version of oneself. However, downward comparisons have received little attention, though their investigation could have critical theoretical and practical implications. This proof-of-concept stud…

  • SpeakApp-Kids! Virtual reality training to reduce fear of public speaking in children – A proof of concept

    Open Access•Robin E Sülter, P E Ketelaar et al.•ARTICLE•Computers & Education•2022

    Virtual reality exposure therapy (VRET) is a promising tool to reduce public speaking anxiety in adults, while treatment and prevention of public speaking anxiety in children has been largely neglected. We examined whether repeated brief exposures to a virtual audience embedded in a prototype of the Virtual Reality (VR) SpeakApp-Kids! helped to reduce (1) self-reported state anxiety during three public speaking practice sessions, (2) state anxiet…

  • Investigating the impact of a health game on implicit and explicit attitude towards food and food choice behaviour

    Open Access•Eva E Alblas, E Alblas et al.•ARTICLE•Appetite•2018

  • Investigating the impact of a health game on implicit attitudes towards food and food choice behaviour of young adults

    Open Access•Eva E Alblas, Frans Folkvord et al.•ARTICLE•Appetite•2018•Cited by: 1•References: 50

  • The Good, the Bad, and the Expert

    Open Access•P E Ketelaar, Lotte M Willemsen et al.•ARTICLE•Journal of Computer-Mediated…•2015•Cited by: 2•References: 8

    This study aims to shed more light on the question whether, and under what circumstances, valence affects consumers' intention to buy a product after reading an online review. We hypothesize that receiver expertise could possibly moderate (a) the impact of review valence on consumers' purchase intentions, and (b) the asymmetric effects of positive and negative reviews. To test these hypotheses, we conducted an experiment, exposing participants (n…

  • The Good, the Bad, and the Expert

    Open Access•P E Ketelaar, Lotte M Willemsen et al.•ARTICLE•Journal of Computer-Mediated…•2015•Cited by: 2•References: 8

    This study aims to shed more light on the question whether, and under what circumstances, valence affects consumers' intention to buy a product after reading an online review. We hypothesize that receiver expertise could possibly moderate (a) the impact of review valence on consumers' purchase intentions, and (b) the asymmetric effects of positive and negative reviews. To test these hypotheses, we conducted an experiment, exposing participants (n…

  • Investigating the impact of a health game on implicit attitudes towards food and food choice behaviour of young adults

    Open Access•Eva E Alblas, Frans Folkvord et al.•ARTICLE•Appetite•2018•Cited by: 1•References: 50

  • The Good, the Bad, and the Expert

    Open Access•P E Ketelaar, Lotte M Willemsen et al.•ARTICLE•Journal of Computer-Mediated…•2015•Cited by: 2•References: 8

    This study aims to shed more light on the question whether, and under what circumstances, valence affects consumers' intention to buy a product after reading an online review. We hypothesize that receiver expertise could possibly moderate (a) the impact of review valence on consumers' purchase intentions, and (b) the asymmetric effects of positive and negative reviews. To test these hypotheses, we conducted an experiment, exposing participants (n…

  • Investigating the impact of a health game on implicit and explicit attitude towards food and food choice behaviour

    Open Access•Eva E Alblas, E Alblas et al.•ARTICLE•Appetite•2018

  • Investigating the impact of a health game on implicit attitudes towards food and food choice behaviour of young adults

    Open Access•Eva E Alblas, Frans Folkvord et al.•ARTICLE•Appetite•2018•Cited by: 1•References: 50

  • SpeakApp-Kids! Virtual reality training to reduce fear of public speaking in children – A proof of concept

    Open Access•Robin E Sülter, P E Ketelaar et al.•ARTICLE•Computers & Education•2022

    Virtual reality exposure therapy (VRET) is a promising tool to reduce public speaking anxiety in adults, while treatment and prevention of public speaking anxiety in children has been largely neglected. We examined whether repeated brief exposures to a virtual audience embedded in a prototype of the Virtual Reality (VR) SpeakApp-Kids! helped to reduce (1) self-reported state anxiety during three public speaking practice sessions, (2) state anxiet…

  • To beautify or uglify! The effects of augmented reality face filters on body satisfaction moderated by self-esteem and self-identification

    Open Access•I R Dijkslag, Leonard Block Santos et al.•ARTICLE•Computers in Human Behavior•2024

    Beautifying augmented reality face filters (AR-FF) have been linked to reduced body satisfaction, particularly in young women. Social comparison theory has been used to explain this negative effect through upward social comparisons against the beautified version of oneself. However, downward comparisons have received little attention, though their investigation could have critical theoretical and practical implications. This proof-of-concept stud…

  • Investigating perceived trust and utility of balanced news chatbots among individuals with varying conspiracy beliefs

    Open Access•Shreya Dubey, P E Ketelaar et al.•ARTICLE•Computers in Human Behavior•2026

    In the current media landscape, various ideas and narratives gain traction, influenced by the dynamics of selective exposure and a decline in trust in traditional information sources. This trend holds the potential to cultivate polarization of perspectives, as individuals actively seek information that resonates with their existing attitudes. Hence, diversifying information that is available online can encourage users to engage with multiple pers…

Psychology (5 works) · Medicine (3 works) · Social Psychology (3 works) · Behavioral Health and Interventions (2 works) · Eating Disorders and Behaviors (2 works) · Food choice (2 works) · Advertising (1 work) · AI in Service Interactions (1 work) · Anxiety (1 work) · Anxiety, Depression, Psychometrics, Treatment, Cognitive Processes (1 work)

Ethnos_APP • Open Source Project • MIT License • Frontend v2.0.0 • Privacy and Cookies • API Documentation: api.ethnos.app/docs • API Source Code: GitHub • DOI: 10.5281/zenodo.17049435 • Frontend Source Code: GitHub • DOI: 10.5281/zenodo.17050053 • cruz.rio.br • Expectantes Misericordiae