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Continuous Focus Groups: A Longitudinal Method for Clinical HRI in Autism Care

Published 20 Apr 2026 in cs.HC and cs.RO | (2604.18197v1)

Abstract: Qualitative methods are important to use alongside quantitative methods to improve Human-Robot Interaction (HRI), yet they are often applied in static or one-off formats that cannot capture how stakeholder perspectives evolve over time. This limitation is especially evident in clinical contexts, where families and patients face heavy burdens and cannot easily participate in repeated research encounters. To address this gap, we introduce continuous focus groups, a longitudinal and co-agential method designed to sustain dialogue with assistive care professionals working with children with autism spectrum disorder (ASD). Three focus groups were organized across successive phases of a robot-assisted therapeutic protocol, enabling participants to revisit and refine earlier views as the intervention progressed. Results show that continuity fostered trust, supported the integration of tacit clinical expertise into design decisions, and functioned as an ethical safeguard by allowing participants to renegotiate involvement and surface new concerns. By bridging the therapeutic iteration of families, children, and clinicians with the research-design iteration of researchers and developers, continuous focus groups provide a methodological contribution that is both feasible in practice and rigorous in design. Beyond autism care, this approach offers a transferable framework for advancing qualitative research in HRI, particularly in sensitive domains where direct user participation is limited and continuity is essential.

Summary

  • The paper demonstrates that continuous focus groups significantly enhance clinician feedback, building trust and yielding iterative design improvements.
  • The methodology employs three sequential sessions following robot-assisted autism interventions, ensuring dynamic clinical engagement.
  • Findings indicate robust clinical insights that inform adaptive robot behaviors through ethical and interdisciplinary mediation.

Continuous Focus Groups: Methodological Innovations in Clinical HRI for Autism Care

Background and Motivation

In Human-Robot Interaction (HRI), capturing the complexity of social and clinical contexts is contingent upon the integration of qualitative methods alongside traditional quantitative paradigms. The application of robots in autism care presents specific methodological and ethical challenges, most notably the need to accommodate evolving stakeholder perspectives and the practical limitations imposed on direct participation by families and patients. Prior research has leveraged focus groups to surface tacit user and stakeholder knowledge, yet these efforts are often limited to static, single-instance formats which fail to address longitudinal changes in perception, engagement, and insight.

Continuous Focus Groups: Design and Rationale

The paper introduces continuous focus groups, a longitudinal and co-agential methodology designed to sustain engagement with clinical professionals during robot-assisted therapeutic interventions for children with autism spectrum disorder (ASD) (2604.18197). This approach rests on the premise that clinicians, as embedded actors in care practices, are uniquely positioned to provide consistent and actionable feedback without adding to the burden faced by families. The method operationalizes iterative dialogue by convening three distinct focus groups across sequential phases of a robot-assisted training protocol. Each session follows clinical activities involving the iCub humanoid robot, enabling participants to refine their earlier views and make direct contributions to the trajectory of intervention development.

The facilitation strategy emphasizes interdisciplinary mediation, with moderators fluent in both psychotherapeutic and HRI domains. This is crucial for translating clinical observations into actionable technical specifications, and for maintaining the ethical, relational tenor of the discussions. Active listening and structured prompts ensure that feedback is both contextually grounded and relevant for iterative adaptation.

Outcomes and Key Findings

Methodological Insights

Continuous focus groups foster an increase in participation, specificity, and solution-oriented feedback from clinicians across sessions. This progression is linked to the development of trust, familiarity, and confidence in the research-design process. The iterative structure enables the integration of tacit clinical expertise into robot behavior design, especially regarding task complexity, adaptive communication, and engagement strategies. Notably, therapy professionals highlighted the inadequacy of static robot behaviors and advocated for greater flexibility—such as mechanisms for branching storylines and intentional robot errors to encourage child correction.

The paper makes a substantial claim regarding methodology: continuous focus groups embody epistemic and ethical rigor not achievable in typical one-off qualitative consultations. This rigor manifests through credibility, transferability, and embedded reflexivity, as stipulated in qualitative research frameworks. Furthermore, the iterative design enables participants to renegotiate their involvement, surface new concerns, and refine their understanding of the intervention’s effects, functioning as an ethical safeguard in clinical HRI.

Clinical and Technical Feedback

Clinician feedback led to adaptive modifications in the robot-assisted protocol, particularly concerning movement fluidity, response timing, and expressive social cues. The group identified that repeated praise loses motivational value quickly, emphasizing the necessity for nuanced reinforcement and authentic social signals (gaze, gesture). They advocated for adaptive stimulus complexity tailored to heterogeneous ASD profiles and highlighted the demand for robust mechanisms accommodating spontaneous child contributions.

Interdisciplinary Mediation

The necessity of mediators skilled in both clinical and technical domains arose as a structural consideration for future HRI research. Such figures ensure that the translation of clinical insight into technical requirements—and vice versa—remains productive and actionable, directly impacting the iterative refinement of interventions.

Implications for HRI and Autism Care

Practically, continuous focus groups provide a feasible, rigorous framework for capturing the evolution of clinical perspectives and integrating them into the design of robot interventions. This is especially critical in domains where direct user participation is ethically or logistically constrained. Theoretically, the method advances arguments for genuine co-agency and interdisciplinarity, moving beyond additive collaboration toward integrative, context-sensitive research.

The approach is transferable to other sensitive domains in HRI—such as eldercare or dementia—where longitudinal engagement and iterative consent are essential. It also addresses gaps in participation highlighted in participatory design literature, offering a pragmatic solution for maintaining stakeholder involvement without exacerbating burdens.

From an ethical standpoint, continuous focus groups embed reflexivity, contextual consent, and relational sensitivity into the research process. This aligns with contemporary ethical guidance in internet-mediated and clinical research, supporting responsible and socially aware methodologies.

Future Directions

The formalization and cultivation of interdisciplinary mediator roles in clinical HRI is a critical next step, ensuring that cross-domain translation remains robust and actionable. Further applications of continuous focus groups could deepen methodological rigor in other domains requiring sustained stakeholder engagement, and inform the development of adaptive, user-responsive robots for complex clinical scenarios. Longitudinal qualitative frameworks may also enhance mixed-method research designs by providing richer, contextually grounded data to complement quantitative metrics.

Conclusion

Continuous focus groups establish a methodological advance for longitudinal qualitative inquiry in clinical HRI, particularly in autism care. The study demonstrates efficacy in integrating evolving clinical expertise into iterative robot intervention design while functioning as an ethical and epistemological safeguard. By bridging therapeutic and research-design iteration, the method addresses practical barriers to stakeholder engagement and sets a template for rigorous, interdisciplinary, and ethically sensitive research in HRI.

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