NCT06517849

Brief Summary

Many people with mental health conditions do not seek treatment, and it is unclear what exactly prevents people from taking up treatment. The goal of this interventional study is to learn about how people think about cognitive behavioral therapy (CBT) for gambling disorders. The main questions it aims to answer are:

  • Do people have incorrect beliefs about the net benefits of CBT? If yes, which beliefs are those, and how much do people underestimate or overestimate the benefits?
  • Is a small monetary incentive (that participants receive conditional on trying out CBT) helpful in increasing take-up of CBT? Apart from these questions, the researchers will also study how well CBT works to treat gambling disorders. Participants will be asked to complete two surveys over four months and might be offered a modest monetary incentive for doing (free) CBT if they are in the treatment group. Researchers will compare that treatment group to a control group. Participants in the control group will have access to free CBT and do the same two surveys as those in the treatment group, but will not receive the monetary incentive.

Trial Health

35
At Risk

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Trial has exceeded expected completion date
Enrollment
375

participants targeted

Target at P75+ for not_applicable

Timeline
Completed

Started Jun 2025

Shorter than P25 for not_applicable

Status
not yet recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

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Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

July 18, 2024

Completed
6 days until next milestone

First Posted

Study publicly available on registry

July 24, 2024

Completed
10 months until next milestone

Study Start

First participant enrolled

June 1, 2025

Completed
9 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

March 1, 2026

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

March 1, 2026

Completed
Last Updated

April 16, 2025

Status Verified

April 1, 2025

Enrollment Period

9 months

First QC Date

July 18, 2024

Last Update Submit

April 12, 2025

Conditions

Keywords

BeliefsBiasIncentive

Outcome Measures

Primary Outcomes (5)

  • Change in Willingness to Pay for CBT

    Change in participants' willingness to pay (in USD; elicited through multiple price lists) for CBT from baseline to follow-up survey.

    Baseline and 4 months

  • Change in Beliefs about CBT

    Change in participants' beliefs about therapy (such as effectiveness, unpleasantness, stigma, etc.) will between baseline and follow-up survey (4 months after baseline).

    Baseline and 4 months

  • Attendance of CBT sessions

    Dates and number of CBT sessions participants attend (as long as they are with Kindbridge Behavioral Health) between baseline survey and follow-up survey (afer 4 months).

    4 months

  • Change in Gambling Consumption

    Amount wagered (in USD) in online and offline gambling by participants over the last month. Difference between stated amount at baseline and stated amount in follow-up survey.

    Baseline and 4 months

  • Change in Subjective Well-Being

    Change in measure of participants' wellbeing from baseline to follow-up (at four months), computed using Likert scale style questions about feeling happy/depressed/satisfied/anxious/etc. Answers are on a seven-point scale from "strongly disagree" through "neutral" to "strongly agree." Points for each question are coded such that more positive answers get more points (so from most negative to most positive, the points -1, -2/3, -1/3, 0, 1/3, 2/3, 1 are awarded) and subjective well-being is the sum of all points.

    Baseline and 4 months

Study Arms (3)

No Incentive

NO INTERVENTION

The "No Incentive" arm will participate in two surveys-including questions about beliefs about therapy and willingness to pay for therapy, gambling behavior, and well-being-at the baseline and at the end (four months after the first survey). The arm will have access to free cognitive behavioral therapy through Kindbridge Behavioral Health, but will not receive a monetary incentive to undergo therapy.

Fixed Incentive

EXPERIMENTAL

The "Fixed Incentive" arm will participate in two surveys-including questions about beliefs about therapy and willingness to pay for therapy, gambling behavior, and well-being-at the baseline and at the end (four months after the first survey). The arm will have access to free cognitive behavioral therapy through Kindbridge Behavioral Health and will be offered a modest monetary incentive to undergo therapy. The incentive will be in form of an electronic gift card. The amount of money offered as an incentive will not depend on the participants' survey replies.

Behavioral: Monetary Incentive for Take-Up of Cognitive Behavioral Therapy

Payment According to Multiple Price List Choices

EXPERIMENTAL

The "Multiple Price List" arm will participate in two surveys-including questions about beliefs about therapy and willingness to pay for therapy, gambling behavior, and well-being-at the baseline and at the end. The arm will have access to free cognitive behavioral therapy through Kindbridge Behavioral Health and might be offered a modest monetary incentive to undergo therapy. More specifically, for all arms, the surveys will include a multiple price list to gauge willingness to pay for CBT. For this "multiple price list" arm, one of the rows from the multiple price list will be (randomly) picked and implemented. Depending on what the participant answered in the randomly picked row, they will either receive an unconditional payment or a payment conditional on undergoing CBT. In either case, the payment will be in form of an electronic gift card.

Behavioral: Monetary Incentive for Take-Up of Cognitive Behavioral Therapy

Interventions

Both treatment arms will be offered a monetary incentive (in form of a retail gift card) for undergoing a certain number of CBT sessions.

Fixed IncentivePayment According to Multiple Price List Choices

Eligibility Criteria

Age21 Years+
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • must reside in Colorado
  • must be English-speaking

You may not qualify if:

  • does not reside in Colorado
  • is not English-speaking

Contact the study team to confirm eligibility.

Sponsors & Collaborators

MeSH Terms

Conditions

Gambling

Condition Hierarchy (Ancestors)

Risk-TakingBehaviorDisruptive, Impulse Control, and Conduct DisordersMental Disorders

Study Officials

  • Sarah Bogl

    Stanford University

    PRINCIPAL INVESTIGATOR
  • Matt Brown

    Stanford University

    PRINCIPAL INVESTIGATOR
  • Mariana Guido

    Stanford University

    PRINCIPAL INVESTIGATOR
  • Nick Grasley

    Stanford University

    PRINCIPAL INVESTIGATOR

Central Study Contacts

Matt Brown

CONTACT

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
SINGLE
Who Masked
CARE PROVIDER
Masking Details
Participants will know whether they are offered the incentive or not. Care providers (i.e., counselors at Kindbridge Behavioral Health) will not know (and participants can access care regardless of whether they are in the treatment group or not).
Purpose
OTHER
Intervention Model
PARALLEL
Model Details: Participants in the control group will take two (paid) surveys and have access to free cognitive behavioral therapy (CBT). Participants in the treatment group will be offered an additional payment (in the form of gift cards) to undergo a certain number of CBT sessions with Kindbridge Behavioral Health.
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Graduate Student

Study Record Dates

First Submitted

July 18, 2024

First Posted

July 24, 2024

Study Start

June 1, 2025

Primary Completion

March 1, 2026

Study Completion

March 1, 2026

Last Updated

April 16, 2025

Record last verified: 2025-04

Data Sharing

IPD Sharing
Will not share