Moments That Matter: Co-designing Just-in-Time Support for Disordered Eating Behaviors.

Minhui Liang; Xiang Qi; Junnan Yu; Yuhan Luo

doi:10.1145/3772318.3791695

Moments That Matter: Co-designing Just-in-Time Support for Disordered Eating Behaviors.

Minhui Liang
, Xiang Qi
, Junnan Yu
, Yuhan Luo^*

^*Corresponding author for this work

Department of Computer Science

Research output: Chapters, Conference Papers, Creative and Literary Works › RGC 32 - Refereed conference paper (with host publication) › peer-review

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Abstract

Eating disorder (ED) is a psychiatric condition that involves behaviors like binge and restrictive eating with severe health consequences, particularly prevalent among young women. While technology interventions exist, they typically focus on retrospective reflection or general management, missing the time window when an ED behavior is taking place. In this work, we conducted co-design sessions with 22 young women experiencing EDs to develop ideas for Just-in-Time (JIT) interventions, followed by interviews with five experts specialized in ED treatment. We found that eating plays varied roles in participants’ lives—from a means of gaining autonomy to automatic physiological responses—leading to design ideas including behavioral warnings, appetite management, food option redirection, psychological support systems, etc. By examining the characteristics of these designs with expert perspectives, we discuss what JIT support means for ED care and how to make it effective and sustainable. © 2026 Copyright held by the owner/author(s).

Original language	English
Title of host publication	CHI '26
Subtitle of host publication	Proceedings of the 2026 CHI Conference on Human Factors in Computing Systems
Publisher	Association for Computing Machinery
ISBN (Electronic)	979-8-4007-2278-3
DOIs	https://doi.org/10.1145/3772318.3791695
Publication status	Published - 13 Apr 2026

Funding

We thank our participants for their time and contribution to the study, and anonymous reviewers for their valuable feedback. This work is supported by City University of Hong Kong (#9610597). In addition, GPT-5 and DeepSeek were used to enhance the overall clarity of the manuscript by correcting grammatical issues, shortening sentences, and improving the fluency of writing.

Research Keywords

eating disorders
just-in-time intervention
co-design
health behavior

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This full text is made available under CC-BY 4.0. https://creativecommons.org/licenses/by/4.0/

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Moments That Matter: Co-designing Just-in-Time Support for Disordered Eating Behaviors. / Liang, Minhui; Qi, Xiang; Yu, Junnan et al.
CHI '26: Proceedings of the 2026 CHI Conference on Human Factors in Computing Systems. Association for Computing Machinery, 2026. 514.

Research output: Chapters, Conference Papers, Creative and Literary Works › RGC 32 - Refereed conference paper (with host publication) › peer-review

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AU - Qi, Xiang

AU - Yu, Junnan

AU - Luo, Yuhan

PY - 2026/4/13

Y1 - 2026/4/13

N2 - Eating disorder (ED) is a psychiatric condition that involves behaviors like binge and restrictive eating with severe health consequences, particularly prevalent among young women. While technology interventions exist, they typically focus on retrospective reflection or general management, missing the time window when an ED behavior is taking place. In this work, we conducted co-design sessions with 22 young women experiencing EDs to develop ideas for Just-in-Time (JIT) interventions, followed by interviews with five experts specialized in ED treatment. We found that eating plays varied roles in participants’ lives—from a means of gaining autonomy to automatic physiological responses—leading to design ideas including behavioral warnings, appetite management, food option redirection, psychological support systems, etc. By examining the characteristics of these designs with expert perspectives, we discuss what JIT support means for ED care and how to make it effective and sustainable. © 2026 Copyright held by the owner/author(s).

AB - Eating disorder (ED) is a psychiatric condition that involves behaviors like binge and restrictive eating with severe health consequences, particularly prevalent among young women. While technology interventions exist, they typically focus on retrospective reflection or general management, missing the time window when an ED behavior is taking place. In this work, we conducted co-design sessions with 22 young women experiencing EDs to develop ideas for Just-in-Time (JIT) interventions, followed by interviews with five experts specialized in ED treatment. We found that eating plays varied roles in participants’ lives—from a means of gaining autonomy to automatic physiological responses—leading to design ideas including behavioral warnings, appetite management, food option redirection, psychological support systems, etc. By examining the characteristics of these designs with expert perspectives, we discuss what JIT support means for ED care and how to make it effective and sustainable. © 2026 Copyright held by the owner/author(s).

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Moments That Matter: Co-designing Just-in-Time Support for Disordered Eating Behaviors.

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Research Keywords

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