Cited by 83Social Robot Interaction and HRIHuman-Automation Interaction and SafetyMulti-Agent Systems and Negotiation

Trust repair in human-agent teams: the effectiveness of explanations and expressing regret

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Kox, E. S., Kerstholt, J. H., Hueting, T. F., de Vries, P. W.·2021·Autonomous Agents and Multi-Agent Systems

Abstract

The role of intelligent agents becomes more social as they are expected to act in direct interaction, involvement and/or interdependency with humans and other artificial entities, as in Human-Agent Teams (HAT). The highly interdependent and dynamic nature of teamwork demands correctly calibrated trust among team members. Trust violations are an inevitable aspect of the cycle of trust and since repairing damaged trust proves to be more difficult than building trust initially, effective trust repair strategies are needed to ensure durable and successful team performance. The aim of this study was to explore the effectiveness of different trust repair strategies from an intelligent agent by measuring the development of human trust and advice taking in a Human-Agent Teaming task. Data for this study were obtained using a task environment resembling a first-person shooter game. Participants carried out a mission in collaboration with their artificial team member. A trust violation was provoked when the agent failed to detect an approaching enemy. After this, the agent offered one of four trust repair strategies, composed of the apology components explanation and expression of regret (either one alone, both or neither). Our results indicated that expressing regret was crucial for effective trust repair. After trust declined due to the violation by the agent, trust only significantly recovered when an expression of regret was included in the apology. This effect was stronger when an explanation was added. In this context, the intelligent agent was the most effective in its attempt of rebuilding trust when it provided an apology that was both affective, and informational. Finally, the implications of our findings for the design and study of Human-Agent trust repair are discussed.

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  • Employing multiple repair strategies is more effective than relying on a single repair strategy.

    “Importantly, the comparison and combination of different repair strategies have gained attention as researchers have discovered that employing multiple repair strategies is more effective than relying on a single repair strategy [37, 77].”

    From System and User Strategies to Repair Conversational Breakdowns of Spoken Dialogue Systems: A Scoping Review (2024) · cites this paper as [37]

    The Discussion reports that combining an expression of regret with an explanation was the most effective approach tested for repairing trust after an agent’s error. These were components of an apology, however, not a general comparison showing that multiple repair strategies outperform a single strategy across settings. (LLM, conf=0.86)

    Experimental — accuracy not yet measured
  • Research shows the effectiveness of system-repair strategies is stronger when combined with other strategies as a multiple-repair strategy.

    “Research shows the effectiveness of system-repair strategies is stronger when combined with other strategies as a multiple-repair strategy [37, 77].”

    From System and User Strategies to Repair Conversational Breakdowns of Spoken Dialogue Systems: A Scoping Review (2024) · cites this paper as [37]

    The Results (§3.2 Trust) and Discussion (§4) report stronger trust recovery when the agent combined an explanation with an expression of regret than when it expressed regret alone. The paper tested those specific apology components in a human–agent team; it does not establish that system-repair strategies generally become more effective whenever they are combined with other strategies. (LLM, conf=0.81)

    Experimental — accuracy not yet measured
  • Some authors use correlations between perceived trustworthiness and system capabilities to measure calibration; larger correlation indicates better calibration.

    “Some authors work with correlations to get a better sense of perceived trustworthiness and system capabilities [5,12,24,39,66,67,81,94,130,139,142].Here the larger the correlation between perceived trustworthiness and system capabilities, the better the calibration.”

    From Measuring and Understanding Trust Calibrations for Automated Systems: A Survey of the State-Of-The-Art and Future Directions (2023) · cites this paper as [67]

    Section 3.3 (page unavailable) reports correlations between trust and participants’ perceptions that the agent was intelligent or useful. Sections 1 and 1.2 describe calibrated trust as trust warranted by the agent’s actual capabilities, but the reported correlations do not compare trust with actual capabilities or establish that a larger correlation means better calibration. (LLM, conf=0.86)

    Experimental — accuracy not yet measured
  • Kox et al. found trust repair strategies profited most when accompanied by an expression of regret, while including different levels of uncertainty had no effect.

    “Examining possible moderating variables, Kox et al. [67] found that trust repair strategies profted the most when accompanied by an expression of regret, while including diferent levels of uncertainty had no efect on the trust repair [67].”

    From Measuring and Understanding Trust Calibrations for Automated Systems: A Survey of the State-Of-The-Art and Future Directions (2023) · cites this paper as [67]

    Section 3.2 (page unavailable) reports that trust increased significantly after repair only when the agent expressed regret; the Discussion says regret plus an explanation was most effective. The study compared regret and explanation conditions, not different levels of uncertainty, so it does not support the claimed null effect of uncertainty. (LLM, conf=0.88)

    Experimental — accuracy not yet measured

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Cited by

Sorted by citations

Authors
Kox, E. S., Kerstholt, J. H., Hueting, T. F., & de Vries, P. W.
Affiliations
Netherlands Organisation for Applied Scientific Research (NL)
Corresponding author
Kox, E. S.
Venue
Autonomous Agents and Multi-Agent Systems
Published
2021-06-18
Volume
35
Issue
2
ISSN
  • 1387-2532 (ISSN-L)
  • 1573-7454
OpenAlex
W3176386948
Cited by
83
References
11
Citations by year
2026: 17 · 2025: 19 · 2024: 23 · 2023: 12 · 2022: 12
FWCI
11.51
Type
journal article
Language
en
Open access
Locations
  • Autonomous Agents and Multi-Agent Systems (publishedVersion, cc-by)
  • University of Twente Research Information (publishedVersion, cc-by)
  • University of Twente Research Information (publishedVersion, other-oa)
  • TNO Repository (submittedVersion, cc-by)
  • TNO Repository (submittedVersion)
  • University of Twente Research Information (submittedVersion, cc-by)
  • University of Twente Research Information (submittedVersion, other-oa)
Funders
Ministry of Defence
Topics
  • Social Sciences › Psychology › Social Psychology › Social Robot Interaction and HRI
  • Social Sciences › Psychology › Social Psychology › Human-Automation Interaction and Safety
  • Physical Sciences › Computer Science › Artificial Intelligence › Multi-Agent Systems and Negotiation
Keywords
trust repair, human-agent teams, breach of trust, apology, explanation, advice taking, human-agent collaboration, emotional communication

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