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Showing 1–24 of 29 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Bullying Clear all
Terminated Not applicable Interventional Accepts healthy volunteers

Effects of ACT OUT! Social Issue Theater on Youth and Adolescents

NCT04097496
View directory record Official record
Conditions
Social Competence, Bullying
Interventions
Act Out! Intervention
Behavioral
Lead sponsor
Indiana University
Other
Eligibility
Not listed
Enrollment
1,537 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
Indianapolis, Indiana
Source: ClinicalTrials.gov public record
Updated Sep 8, 2020 · Synced Sep 6, 2026, 9:45 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Automating Peer Learning to Reduce Alcohol Use and Related Deviant Behavior in Secondary School

NCT04478240
View directory record Official record
Conditions
Substance Use, Stress, Relation, Interpersonal, Bullying, Victimisation, Mental Health Issue, Sleep, Inadequate, Social Skills
Interventions
PeerLearning.net
Behavioral
Lead sponsor
Oregon Research Behavioral Intervention Strategies, Inc.
Industry
Eligibility
Not listed
Enrollment
924 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
Eugene, Oregon
Source: ClinicalTrials.gov public record
Updated Jul 2, 2023 · Synced Sep 6, 2026, 9:45 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

BullyDown, a Text Messaging-based Bullying Prevention Program for Middle School-aged Youth

NCT06017050
View directory record Official record
Conditions
Bullying
Interventions
BullyDown, Attention-matched control
Behavioral
Lead sponsor
Center for Innovative Public Health Research
Other
Eligibility
12 Years to 14 Years
Enrollment
138 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
2
States / cities
San Clemente, California • Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Dec 4, 2025 · Synced Sep 6, 2026, 9:45 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Coaching Teachers in Bullying Detection and Intervention

NCT05321342
View directory record Official record
Conditions
Intervention, Control
Interventions
Bullying Classroom Check-Up (BCCU)
Behavioral
Lead sponsor
Johns Hopkins Bloomberg School of Public Health
Other
Eligibility
8 Years to 99 Years
Enrollment
34 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2026
U.S. locations
2
States / cities
Baltimore, Maryland • Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Apr 7, 2026 · Synced Sep 6, 2026, 9:45 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

The Use of Mentoring to Promote Well-being for Female SMART Members

NCT04247880
View directory record Official record
Conditions
Harassment, Non-Sexual, Harassment, Sexual, Bullying, Workplace, Mental Stress, Work-Related Condition, Work-related Injury, Work Related Stress
Interventions
Mentoring program
Behavioral
Lead sponsor
University of Washington
Other
Eligibility
21 Years to 65 Years · Female only
Enrollment
96 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2024
U.S. locations
19
States / cities
Phoenix, Arizona • Glendora, California • San Jose, California + 16 more
Source: ClinicalTrials.gov public record
Updated Sep 15, 2025 · Synced Sep 6, 2026, 9:45 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Middle School Teacher Module for a Brief Bullying Intervention Program

NCT06017752
View directory record Official record
Conditions
Bullying
Interventions
STAC Teacher Module
Behavioral
Lead sponsor
Boise State University
Other
Eligibility
21 Years and older
Enrollment
18 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022
U.S. locations
1
States / cities
Boise, Idaho
Source: ClinicalTrials.gov public record
Updated Sep 30, 2024 · Synced Sep 6, 2026, 9:45 PM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Evaluation of radKIDS 2.0, a Multi-media Training Program for Elementary School Bullying and Abuse Prevention

NCT06608173
View directory record Official record
Conditions
Healthy, Self Esteem, Self Efficacy, Knowledge
Interventions
radKIDS2.0 Safety and Empowerment Education Program
Behavioral
Lead sponsor
Saavsus, Inc.
Other
Eligibility
9 Years to 75 Years
Enrollment
656 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
2
States / cities
Eugene, Oregon • Springfield, Oregon
Source: ClinicalTrials.gov public record
Updated Feb 23, 2025 · Synced Sep 6, 2026, 9:45 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Examining the Efficacy of the PRAISE With Coaching Program

NCT07191782
View directory record Official record
Conditions
Aggression Childhood, Bullying Victimization, Social Behavior
Interventions
Universal, classroom-based, Bullying and Aggression Prevention Program
Behavioral
Lead sponsor
Children's Hospital of Philadelphia
Other
Eligibility
8 Years and older
Enrollment
1,008 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2028
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jul 21, 2026 · Synced Sep 6, 2026, 9:45 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Multi-Site Evaluation of Second Step

NCT01792167
View directory record Official record
Conditions
Aggression
Interventions
Second Step Curriculum
Behavioral
Lead sponsor
University of Illinois at Urbana-Champaign
Other
Eligibility
11 Years to 15 Years
Enrollment
4,089 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2014
U.S. locations
1
States / cities
Champaign, Illinois
Source: ClinicalTrials.gov public record
Updated Mar 17, 2014 · Synced Sep 6, 2026, 9:45 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Are Character Building Lessons Effective in Decreasing Bullying Behaviors?

NCT00431470
View directory record Official record
Conditions
Aggression
Interventions
Six classroom based character building education lessons
Behavioral
Lead sponsor
Maimonides Medical Center
Other
Eligibility
9 Years to 13 Years
Enrollment
175 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007
U.S. locations
1
States / cities
Staten Island, New York
Source: ClinicalTrials.gov public record
Updated Feb 4, 2009 · Synced Sep 6, 2026, 9:45 PM EDT
Completed Not applicable Interventional

Bullying Prevention Intervention for Adolescent Primary Care Patients

NCT03467009
View directory record Official record
Conditions
Cyberbullying
Interventions
iPACT Intervention, Control: Enhanced Usual Care (EUC), iPACT Intervention- app
Behavioral · Other
Lead sponsor
Rhode Island Hospital
Other
Eligibility
13 Years to 17 Years
Enrollment
77 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
1
States / cities
Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated Nov 25, 2019 · Synced Sep 6, 2026, 9:45 PM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Efficacy of a Multi-level School Intervention for LGBTQ Youth

NCT05541406
View directory record Official record
Conditions
Depression, Anxiety, Post Traumatic Stress Disorder, Coping Behavior, Sexual Minority Stress, Suicidality, Substance Use, Bullying, Harassment
Interventions
Proud & Empowered
Behavioral
Lead sponsor
Washington University School of Medicine
Other
Eligibility
12 Years to 20 Years
Enrollment
228 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2026
U.S. locations
22
States / cities
El Monte, California • Glendale, California • Inglewood, California + 6 more
Source: ClinicalTrials.gov public record
Updated Aug 9, 2026 · Synced Sep 6, 2026, 9:45 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Translating an In-Person Brief, Bystander Bullying Intervention (STAC) to a Technology-Based Intervention

NCT04681495
View directory record Official record
Conditions
Bullying of Child, Bullying
Interventions
STAC
Behavioral
Lead sponsor
Klein Buendel, Inc.
Industry
Eligibility
11 Years to 80 Years
Enrollment
52 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2021
U.S. locations
2
States / cities
Golden, Colorado • Boise, Idaho
Source: ClinicalTrials.gov public record
Updated Jun 22, 2021 · Synced Sep 6, 2026, 9:45 PM EDT
Completed Not applicable Interventional Results available

Intervention for Victimized Youth

NCT06631274
View directory record Official record
Conditions
Victimization
Interventions
counseling
Behavioral
Lead sponsor
Florida State University
Other
Eligibility
11 Years to 14 Years
Enrollment
48 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
2
States / cities
Tallahassee, Florida
Source: ClinicalTrials.gov public record
Updated Nov 24, 2025 · Synced Sep 6, 2026, 9:45 PM EDT
Not yet recruiting No phase listed Observational

Evaluation of State-Level Sexual and Gender Minority Laws for the Primary Prevention of Sexual and Intimate Partner Violence Among Sexual and Gender Minority Youth in the U.S.

NCT07729644
View directory record Official record
Conditions
Sexual Violence, Intimate Partner Violence (IPV)
Interventions
Enumerated anti-bullying state legislation, Conversion therapy state legislation, Gender-affirming care state legislation
Other
Lead sponsor
University of California, Berkeley
Other
Eligibility
13 Years to 18 Years
Enrollment
30 participants
Timeline
2026 – 2029
U.S. locations
1
States / cities
Berkeley, California
Source: ClinicalTrials.gov public record
Updated Jul 28, 2026 · Synced Sep 6, 2026, 9:45 PM EDT
Completed Not applicable Interventional Results available

Cognitive-Behavioral Therapy for Weight-related Bullying (Online Treatment)

NCT04587752
View directory record Official record
Conditions
Bullying, Weight, Body, Trauma, Psychological
Interventions
CBT for Weight Bullying
Behavioral
Lead sponsor
Yale University
Other
Eligibility
11 Years to 17 Years · Female only
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2023
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Sep 22, 2024 · Synced Sep 6, 2026, 9:45 PM EDT
Completed Not applicable Interventional Results available

Evaluation of an Online Intervention to Help LGBTQ Youth Cope With Bullying

NCT03501264
View directory record Official record
Conditions
Bullying of Child
Interventions
Online Game, LGBTQ Resources
Behavioral
Lead sponsor
University of Pittsburgh
Other
Eligibility
14 Years to 18 Years
Enrollment
240 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Oct 6, 2019 · Synced Sep 6, 2026, 9:45 PM EDT
Completed No phase listed Observational

Assessment of Bullying in Children

NCT01439763
View directory record Official record
Conditions
Problematic Behavior in Children
Interventions
Not listed
Lead sponsor
New York City Health and Hospitals Corporation
Other
Eligibility
8 Years to 18 Years
Enrollment
72 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2020
U.S. locations
1
States / cities
The Bronx, New York
Source: ClinicalTrials.gov public record
Updated Nov 26, 2020 · Synced Sep 6, 2026, 9:45 PM EDT
Completed Not applicable Interventional

Intervention Media to Prevent Adolescent Cyber-conflict Through Technology

NCT04259216
View directory record Official record
Conditions
Cyberbullying
Interventions
IMPACT Intervention, Control: Enhanced Online Resources (EOR)
Behavioral · Other
Lead sponsor
Rhode Island Hospital
Other
Eligibility
13 Years to 17 Years
Enrollment
79 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020
U.S. locations
1
States / cities
Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated Sep 20, 2021 · Synced Sep 6, 2026, 9:45 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

PLANTS Pilot Trial

NCT05897827
View directory record Official record
Conditions
Alcohol Drinking, Social Acceptance, Depressive Symptoms, Bullying
Interventions
PLANTS, EMAILS
Behavioral
Lead sponsor
University of Pittsburgh
Other
Eligibility
18 Years and older
Enrollment
99 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Apr 3, 2025 · Synced Sep 6, 2026, 9:45 PM EDT
Recruiting Not applicable Interventional

Flourish in Schools Pilot Study

NCT07506525
View directory record Official record
Conditions
Psychological Distress, Suicidal Ideation
Interventions
Flourish
Device
Lead sponsor
Candice Biernesser
Other
Eligibility
11 Years to 21 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
2
States / cities
Bay Village, Ohio • Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Mar 31, 2026 · Synced Sep 6, 2026, 9:45 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Middle School Parent Module for a Brief Bullying Intervention Program

NCT06002347
View directory record Official record
Conditions
Bullying
Interventions
STAC Parent Module for Middle School
Behavioral
Lead sponsor
Boise State University
Other
Eligibility
21 Years and older
Enrollment
23 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022
U.S. locations
1
States / cities
Boise, Idaho
Source: ClinicalTrials.gov public record
Updated Nov 8, 2023 · Synced Sep 6, 2026, 9:45 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Efficacy Study of Amazing Me Program

NCT04754126
View directory record Official record
Conditions
Self Esteem, Body Distorted Images
Interventions
Amazing Me
Behavioral
Lead sponsor
Arizona State University
Other
Eligibility
9 Years to 11 Years
Enrollment
421 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
Tempe, Arizona
Source: ClinicalTrials.gov public record
Updated Apr 2, 2023 · Synced Sep 6, 2026, 9:45 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Online Bullying Bystander Intervention for Middle Schools Phase II

NCT05572398
View directory record Official record
Conditions
Adolescent, Bullying, Technology, Mental Health
Interventions
STAC-T
Behavioral
Lead sponsor
Klein Buendel, Inc.
Industry
Eligibility
11 Years and older
Enrollment
613 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2024
U.S. locations
2
States / cities
Boise, Idaho • University, Mississippi
Source: ClinicalTrials.gov public record
Updated Feb 23, 2026 · Synced Sep 6, 2026, 9:45 PM EDT