About this trial
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.
Eligibility criteria
This trial accepts healthy volunteersQualifiers
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
Disqualifiers
Varsity student-athlete governed by the university athletic association
Unable to complete study procedures in English
Trial design
Crossover
Treatments tested in this trial
Momentary coping prompt
BehavioralA 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.
Active control message
BehavioralA brief neutral acknowledgment message matched to the coping messages on delivery mechanism and approximate length, containing no coping technique or behavioral suggestion.
Treatment groups
Trial outcomes
Primary outcomes
Momentary urge to post or reply reactively, score on a 7-point scale.
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.
Momentary urge to drink alcohol, score on a 7-point scale.
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.
Momentary emotional influence on eating, score on a 7-point scale.
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.
Secondary outcomes
Momentary reactive online behavior since the previous check-in, self-reported occurrence
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.
Number of standard drinks consumed since the previous check-in, self-reported count
Self-reported number of standard drinks consumed since the previous check-in.
Loss-of-control eating rating, score on a 7-point scale
Self-reported sense of losing control while eating since the previous check-in, rated 1 to 7.
Proportion of scheduled check-ins completed
Number of completed check-ins divided by number of scheduled check-ins. Pre-registered feasibility benchmark is 75 percent.
Sponsors and contacts
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