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Just-in-Time Coping Prompts for Reactive Digital Behavior in College Students (REACT)

2026年8月24日 更新者：University of Florida

REACT: A Just-in-Time Adaptive Intervention to Reduce Reactive Digital Behavior in College Students

This study looks at the moments when college students feel a strong emotional swing, and how those moments relate to reacting online when upset, drinking alcohol, and eating in response to emotions. Participants wear a wrist device and answer brief check-ins on their phone several times a day for about five weeks. During part of that time, a study app sometimes sends a short coping message at moments when the wrist device and check-ins suggest emotions are shifting quickly. Whether a message is sent at any given moment is decided at random, and the study compares what participants do in the short window afterward. The study is a pilot designed to test whether the approach is feasible and to estimate how large its effects are.

調査の概要

状態

まだ募集していません

条件

介入・治療

詳細な説明

REACT is a five-week micro-randomized trial in University of Florida students age 18 and older. Participants complete a baseline battery, wear a Garmin Venu 3, and respond to five to six smartphone check-ins per day. Week one is a no-prompt run-in that establishes each participant's own baseline distribution of momentary affective variability, indexed by the mean square of successive differences on consecutive affect ratings. From week two through week five, the app evaluates up to six decision points per day. A decision point is flagged when the participant's current variability exceeds their own 80th percentile threshold, computed within person rather than against a group average. At each available decision point the app randomizes with probability 0.5 whether to deliver a brief coping message, and if so selects a message type from those eligible in that context. Availability rules exclude sleep, stale device data, a 60-minute cooldown, a daily cap, and any safety override. Proximal outcomes are drawn from the first check-in within two hours after the decision point. Analysis uses weighted and centered least squares to estimate causal excursion effects, with pre-specified moderators.

研究の種類

介入

入学 (推定)

80

段階

  • 適用できない

連絡先と場所

このセクションには、調査を実施する担当者の連絡先の詳細と、この調査が実施されている場所に関する情報が記載されています。

研究連絡先

  • 名前：Yonghwan Chang, PhD
  • 電話番号：352-294-1664
  • メール：yhchang@ufl.edu

研究場所

  • アメリカ
    • Florida
      • Gainesville、Florida、アメリカ、32611
        • University of Florida
        • コンタクト：
          • Yonghwan Chang, PhD
          • 電話番号：352-294-1664
          • メール：yhchang@ufl.edu
        • 主任研究者：
          • Yonghwan Chang, PhD

参加基準

研究者は、適格基準と呼ばれる特定の説明に適合する人を探します。これらの基準のいくつかの例は、人の一般的な健康状態または以前の治療です。

適格基準

就学可能な年齢

  • 大人
  • 高齢者

健康ボランティアの受け入れ

はい

説明

Inclusion Criteria:

  • Currently enrolled University of Florida student
  • Age 18 years or older
  • Owns a smartphone used daily
  • Willing to wear a wrist-worn device and complete brief check-ins several times daily for approximately five weeks

Exclusion Criteria:

  • Varsity student-athlete governed by the university athletic association
  • Unable to complete study procedures in English

研究計画

このセクションでは、研究がどのように設計され、研究が何を測定しているかなど、研究計画の詳細を提供します。

研究はどのように設計されていますか？

デザインの詳細

  • 主な目的：防止
  • 割り当て：ランダム化
  • 介入モデル：クロスオーバー割り当て
  • マスキング：なし（オープンラベル）

武器と介入

参加者グループ / アーム
介入・治療
実験的：Coping prompt delivered
Decision points at which the randomization outcome is to deliver a brief cognitive-behavioral or acceptance-based coping message. Message type is selected at random from those eligible in the participant's current context. Every participant contributes decision points to this condition.
行動：Momentary coping prompt
A single short message of one to three sentences delivered to the participant's smartphone at a randomized decision point, taking roughly fifteen to thirty seconds to read. Messages apply cognitive-behavioral techniques including thought records, perspective-taking, decatastrophizing, cost-benefit checks, implementation intentions, and behavioral redirection, or acceptance-based techniques including cognitive defusion, acceptance, values anchoring, urge surfing, and present-moment grounding. Delivery is capped at four messages per day with a minimum sixty-minute interval and is confined to participant-set waking hours. Messages may be dismissed without responding.
アクティブコンパレータ：No coping prompt or active control message
Decision points at which the randomization outcome is not to deliver a coping message. A brief neutral, non-directive acknowledgment message may be delivered as an active control so that receiving any message can be separated from receiving a coping message. Every participant contributes decision points to this condition.
行動：Active control message
A brief neutral acknowledgment message matched to the coping messages on delivery mechanism and approximate length, containing no coping technique or behavioral suggestion.

この研究は何を測定していますか？

主要な結果の測定

結果測定
メジャーの説明
時間枠
Momentary urge to post or reply reactively, score on a 7-point scale.
時間枠：Within 2 hours after each randomized decision point, across weeks 2 to 5.
Self-reported urge to post or reply about something upsetting, rated 1 to 7 at the first check-in within two hours after a randomized decision point. Higher scores indicate greater urge. Analyzed as a causal excursion effect comparing decision points at which a coping message was delivered with those at which it was not.
Within 2 hours after each randomized decision point, across weeks 2 to 5.
Momentary urge to drink alcohol, score on a 7-point scale.
時間枠：Within 2 hours after each randomized decision point, across weeks 2 to 5.
Self-reported current urge to drink alcohol, rated 1 to 7 at the first check-in within two hours after a randomized decision point. Higher scores indicate greater urge. Analyzed as a causal excursion effect.
Within 2 hours after each randomized decision point, across weeks 2 to 5.
Momentary emotional influence on eating, score on a 7-point scale.
時間枠：Within 2 hours after each randomized decision point, across weeks 2 to 5.
Self-reported rating of how much emotions influenced eating since the previous check-in, rated 1 to 7 at the first check-in within two hours after a randomized decision point. Analyzed as a causal excursion effect.
Within 2 hours after each randomized decision point, across weeks 2 to 5.

二次結果の測定

結果測定
メジャーの説明
時間枠
Proportion of delivered prompts receiving a response
時間枠：Through study completion, approximately 5 weeks per participant.
Number of prompts receiving a rating response divided by number of prompts delivered. Pre-registered benchmark is 60 percent.
Through study completion, approximately 5 weeks per participant.
Proportion of enrolled participants retained to study end.
時間枠：Through study completion, approximately 5 weeks per participant.
Number of participants completing the study divided by number enrolled. Pre-registered benchmark is 85 percent.
Through study completion, approximately 5 weeks per participant.
Momentary reactive online behavior since the previous check-in, self-reported occurrence
時間枠：Within 2 hours after each randomized decision point, across weeks 2 to 5.
Self-reported occurrence of posting or replying while upset since the previous check-in, reported yes or no at the first check-in within two hours after a randomized decision point.
Within 2 hours after each randomized decision point, across weeks 2 to 5.
Number of standard drinks consumed since the previous check-in, self-reported count
時間枠：Within 2 hours after each randomized decision point, across weeks 2 to 5.
Self-reported number of standard drinks consumed since the previous check-in.
Within 2 hours after each randomized decision point, across weeks 2 to 5.
Loss-of-control eating rating, score on a 7-point scale
時間枠：Within 2 hours after each randomized decision point, across weeks 2 to 5
Self-reported sense of losing control while eating since the previous check-in, rated 1 to 7.
Within 2 hours after each randomized decision point, across weeks 2 to 5
Proportion of scheduled check-ins completed
時間枠：Through study completion, approximately 5 weeks per participant.
Number of completed check-ins divided by number of scheduled check-ins. Pre-registered feasibility benchmark is 75 percent.
Through study completion, approximately 5 weeks per participant.
Proportion of waking hours with valid wearable data
時間枠：Through study completion, approximately 5 weeks per participant.
Hours of valid physiological data divided by estimated waking hours. Pre-registered benchmark is 80 percent.
Through study completion, approximately 5 weeks per participant.
Prompt helpfulness rating, score on a 7-point scale
時間枠：Week 3 and end of study, approximately week 5.
Participant rating of how helpful the coping prompts were, rated 1 to 7.
Week 3 and end of study, approximately week 5.
System Usability Scale total score.
時間枠：End of study, approximately week 5.
System Usability Scale (Brooke, 1996) total score, range 0 to 100, higher scores indicating better usability.
End of study, approximately week 5.

協力者と研究者

ここでは、この調査に関係する人々や組織を見つけることができます。

スポンサー

University of Florida

捜査官

  • 主任研究者：Yonghwan Chang, PhD、University of Florida

研究記録日

これらの日付は、ClinicalTrials.gov への研究記録と要約結果の提出の進捗状況を追跡します。研究記録と報告された結果は、国立医学図書館 (NLM) によって審査され、公開 Web サイトに掲載される前に、特定の品質管理基準を満たしていることが確認されます。

主要日程の研究

研究開始 (推定)

2026年9月1日

一次修了 (推定)

2027年5月1日

研究の完了 (推定)

2027年8月1日

試験登録日

最初に提出

2026年8月23日

QC基準を満たした最初の提出物

2026年8月24日

最初の投稿 (実際)

2026年8月27日

学習記録の更新

投稿された最後の更新 (実際)

2026年8月27日

QC基準を満たした最後の更新が送信されました

2026年8月24日

最終確認日

2026年8月1日

詳しくは

本研究に関する用語

キーワード

追加の関連 MeSH 用語

その他の研究ID番号

  • IRB202600940
  • 00135244 (その他の助成金/資金番号：University of Florida Research Opportunity Seed Fund)

個々の参加者データ (IPD) の計画

個々の参加者データ (IPD) を共有する予定はありますか?

いいえ

IPD プランの説明

Individual participant data will not be shared outside the research team. This is a pilot study collecting sensitive behavioral and biological data from a small identifiable campus population, and the informed consent does not provide for external sharing of individual-level data. Aggregate results will be published.

医薬品およびデバイス情報、研究文書

米国FDA規制医薬品の研究

いいえ

米国FDA規制機器製品の研究

いいえ

この情報は、Web サイト clinicaltrials.gov から変更なしで直接取得したものです。研究の詳細を変更、削除、または更新するリクエストがある場合は、register@clinicaltrials.gov。 までご連絡ください。 clinicaltrials.gov に変更が加えられるとすぐに、ウェブサイトでも自動的に更新されます。

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