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

24. August 2026 aktualisiert von: 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.

Studienübersicht

Status

Noch keine Rekrutierung

Bedingungen

Intervention / Behandlung

Detaillierte Beschreibung

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.

Studientyp

Interventionell

Einschreibung (Geschätzt)

80

Phase

  • Unzutreffend

Kontakte und Standorte

Dieser Abschnitt enthält die Kontaktdaten derjenigen, die die Studie durchführen, und Informationen darüber, wo diese Studie durchgeführt wird.

Studienkontakt

  • Name: Yonghwan Chang, PhD
  • Telefonnummer: 352-294-1664
  • E-Mail: yhchang@ufl.edu

Studienorte

    • Florida
      • Gainesville, Florida, Vereinigte Staaten, 32611
        • University of Florida
        • Kontakt:
        • Hauptermittler:
          • Yonghwan Chang, PhD

Teilnahmekriterien

Forscher suchen nach Personen, die einer bestimmten Beschreibung entsprechen, die als Auswahlkriterien bezeichnet werden. Einige Beispiele für diese Kriterien sind der allgemeine Gesundheitszustand einer Person oder frühere Behandlungen.

Zulassungskriterien

Studienberechtigtes Alter

  • Erwachsene
  • Älterer Erwachsener

Akzeptiert gesunde Freiwillige

Ja

Beschreibung

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

Studienplan

Dieser Abschnitt enthält Einzelheiten zum Studienplan, einschließlich des Studiendesigns und der Messung der Studieninhalte.

Wie ist die Studie aufgebaut?

Designdetails

  • Hauptzweck: Verhütung
  • Zuteilung: Zufällig
  • Interventionsmodell: Crossover-Aufgabe
  • Maskierung: Keine (Offenes Etikett)

Waffen und Interventionen

Teilnehmergruppe / Arm
Intervention / Behandlung
Experimental: 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.
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.
Aktiver Komparator: 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.
A brief neutral acknowledgment message matched to the coping messages on delivery mechanism and approximate length, containing no coping technique or behavioral suggestion.

Was misst die Studie?

Primäre Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
Momentary urge to post or reply reactively, score on a 7-point scale.
Zeitfenster: 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.
Zeitfenster: 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.
Zeitfenster: 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.

Sekundäre Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
Proportion of delivered prompts receiving a response
Zeitfenster: 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.
Zeitfenster: 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
Zeitfenster: 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
Zeitfenster: 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
Zeitfenster: 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
Zeitfenster: 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
Zeitfenster: 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
Zeitfenster: 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.
Zeitfenster: 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.

Mitarbeiter und Ermittler

Hier finden Sie Personen und Organisationen, die an dieser Studie beteiligt sind.

Sponsor

Ermittler

  • Hauptermittler: Yonghwan Chang, PhD, University of Florida

Studienaufzeichnungsdaten

Diese Daten verfolgen den Fortschritt der Übermittlung von Studienaufzeichnungen und zusammenfassenden Ergebnissen an ClinicalTrials.gov. Studienaufzeichnungen und gemeldete Ergebnisse werden von der National Library of Medicine (NLM) überprüft, um sicherzustellen, dass sie bestimmten Qualitätskontrollstandards entsprechen, bevor sie auf der öffentlichen Website veröffentlicht werden.

Haupttermine studieren

Studienbeginn (Geschätzt)

1. September 2026

Primärer Abschluss (Geschätzt)

1. Mai 2027

Studienabschluss (Geschätzt)

1. August 2027

Studienanmeldedaten

Zuerst eingereicht

23. August 2026

Zuerst eingereicht, das die QC-Kriterien erfüllt hat

24. August 2026

Zuerst gepostet (Tatsächlich)

27. August 2026

Studienaufzeichnungsaktualisierungen

Letztes Update gepostet (Tatsächlich)

27. August 2026

Letztes eingereichtes Update, das die QC-Kriterien erfüllt

24. August 2026

Zuletzt verifiziert

1. August 2026

Mehr Informationen

Begriffe im Zusammenhang mit dieser Studie

Andere Studien-ID-Nummern

  • IRB202600940
  • 00135244 (Andere Zuschuss-/Finanzierungsnummer: University of Florida Research Opportunity Seed Fund)

Plan für individuelle Teilnehmerdaten (IPD)

Planen Sie, individuelle Teilnehmerdaten (IPD) zu teilen?

NEIN

Beschreibung des IPD-Plans

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.

Arzneimittel- und Geräteinformationen, Studienunterlagen

Studiert ein von der US-amerikanischen FDA reguliertes Arzneimittelprodukt

Nein

Studiert ein von der US-amerikanischen FDA reguliertes Geräteprodukt

Nein

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