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Updated: Oct 14, 2025

Psychophysiological Assessment of the Effectiveness of Emotion Regulation Strategies in Childhood
Published on: February 11, 2017
An In Situ, Child-Led Intervention to Promote Emotion Regulation Competence in Middle Childhood: Protocol for an
Petr Slovak1, Brett Q Ford2, Sherri Widen3
1Department of Informatics, King's College London, London, United Kingdom.
This study quantitatively evaluates Purrble, a robot toy, for improving children's emotion regulation. Results will inform its use in prevention and treatment for child mental health.
Area of Science:
- Child Psychology
- Human-Robot Interaction
- Digital Health Interventions
Background:
- Emotion regulation is crucial for child mental health and a target for interventions.
- Current interventions are limited in scalability and accessibility.
- Purrble, a socially assistive robot toy, offers in-the-moment haptic feedback for emotion regulation support.
Purpose of the Study:
- To quantitatively evaluate the efficacy of the Purrble intervention model for child-led emotion regulation.
- To assess Purrble's potential in both prevention and treatment contexts for children.
- To provide the first quantitative evidence of Purrble's impact on child outcomes.
Main Methods:
- 134 children (8-10 years) with mild-to-moderate emotion regulation difficulties were recruited.
- Families were randomized to receive either Purrble or a noninteractive toy control.
- Primary outcome: daily parent-reported emotion regulation capability over 4 weeks; secondary outcomes and follow-ups assessed over 6 months.
Main Results:
- Study results are anticipated for publication in 2022.
- Funding secured from UKRI Future Leaders Fellowship and Committee for Children.
- Ethical approval obtained from Pearl institutional review board; recruitment and deployment completed in 2021.
Conclusions:
- This study represents the first quantitative evaluation of the Purrble intervention.
- It will provide in-depth understanding of the intervention's logic model and effectiveness.
- Findings will guide optimization for future child emotion regulation interventions.

