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A Randomized Controlled Ecological Momentary Intervention to Improve Digital Self-Regulation and Well-Being

RecruitingNAAges 18 Years - 25 YearsAllThe Hong Kong Polytechnic University
NCT07511374 on ClinicalTrials.gov ↗
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In plain words

What the trial is, and whether it could suit you

The primary objective of this study is to examine whether an ecological momentary intervention (EMI), combining behavioral self-monitoring (screen time screenshot uploads) and structured reflection, can enhance metacognitive awareness and metacognitive regulation in the context of recreational screen time among young adults. A secondary objective is to investigate whether improvements in metacognitive processes are associated with subsequent changes in behavioral and psychological outcomes, including recreational screen time (RST), stress, and life satisfaction. Furthermore, this study aims to elucidate the underlying mechanisms through which the intervention exerts its effects by integrating a randomized controlled trial (RCT) design with intensive longitudinal (daily diary) data. Specifically, the study addresses the following research questions: RQ1 (Primary Intervention Effect on

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📋 Eligibility rules (as published)
Inclusion Criteria: Participants must meet all of the following criteria: 1. Age between 18 and 25 years old. 2. Own and regularly use a smartphone. 3. Report an average daily recreational screen time of at least 3 hours on weekdays or 4 hours on weekends, based on self-report (Zablotsky et al., 2025). 4. Be able to access their device's built-in screen time tracking function (or equivalent system-level usage report) and upload screenshots when required. 5. Be willing and able to complete daily surveys throughout the full study period. 6. Indicate motivation to reduce or regulate their recreational screen use. Exclusion Criteria: 1. Outside the age range of 18-25 years. 2. Do not own a smartphone or do not use it regularly. 3. Report average daily recreational screen time below 3 hours on weekdays and below 4 hours on weekends. 4. Are unable to access device-based screen time tracking functions or cannot provide valid screenshots when required. 5. Are unwilling or unable to complete daily surveys across the study period (e.g., anticipated non-compliance, scheduling constraints). 6. Do not express motivation to reduce or regulate their recreational screen use.
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What it tests

  • Ecological momentary intervention
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Where

1 site
The Hong Kong Polythechnic University
Hong Kong, Hong Kong
🤝 Taking part is your choice, and you can leave at any time. Only the trial team can confirm you are eligible — always decide together with your own doctor.
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