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The Effects of Privacy Policy Presentation and Length on Trust in Recommender Systems: An Online Experiment

Author

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  • Schewe, Marc
  • Bahník, Štěpán

Abstract

Recommender systems play a crucial role in e-commerce by simplifying consumer searches, improving decision making, and increasing user satisfaction, ultimately boosting e-vendors’ revenues. Their effectiveness depends on the trust of the users and the availability of data to generate accurate recommendations. Using an online experiment, we examined the effect of privacy policies and the amount of requested information on trust in recommender systems and willingness to share data. The results showed that a long privacy policy reduced trust compared to a short or absent policy. The presentation of a privacy policy and the request for more data decreased participants’ willingness to share data with the system, but a long policy did not further decrease the sharing beyond the effect of a short policy. To maintain trust and encourage data sharing, e-vendors may benefit from offering privacy policies upon request, keeping them concise, and minimizing data requests.

Suggested Citation

  • Schewe, Marc & Bahník, Štěpán, 2026. "The Effects of Privacy Policy Presentation and Length on Trust in Recommender Systems: An Online Experiment," EconStor Preprints 335109, ZBW - Leibniz Information Centre for Economics.
    • Handle: RePEc:zbw:esprep:335109
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    File URL: https://www.econstor.eu/bitstream/10419/335109/1/Privacy-Policy-Presentation-in-Recommender-Systems.pdf
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    JEL classification:

    • M31 - Business Administration and Business Economics; Marketing; Accounting; Personnel Economics - - Marketing and Advertising - - - Marketing
    • L81 - Industrial Organization - - Industry Studies: Services - - - Retail and Wholesale Trade; e-Commerce

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