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ClinicalTrials.gov public records Last synced May 22, 2026, 1:23 AM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Showing 1–16 of 16 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Optimism Clear all
Completed Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Healthy
Interventions
positive psychological intervention, Active control condition
Behavioral
Lead sponsor
University of Pittsburgh
Other
Eligibility
18 Years and older
Enrollment
250 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jul 1, 2021 · Synced May 22, 2026, 1:23 AM EDT
Not yet recruiting Not applicable Interventional
View directory record Official record
Conditions
Post-Acute COVID-19 Syndrome
Interventions
HOPE-LC~Espanol
Behavioral
Lead sponsor
Icahn School of Medicine at Mount Sinai
Other
Eligibility
18 Years and older
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Apr 22, 2026 · Synced May 22, 2026, 1:23 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available
View directory record Official record
Conditions
Autism Disorder
Interventions
Autism Parent Trainer (APT), Teaching Routines (Control)
Behavioral
Lead sponsor
IRIS Media Inc
Other
Eligibility
18 Years and older
Enrollment
156 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2017
U.S. locations
1
States / cities
Eugene, Oregon
Source: ClinicalTrials.gov public record
Updated Feb 4, 2020 · Synced May 22, 2026, 1:23 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Healthy
Interventions
Experimental (Gratitude Journaling), Control (journaling without gratitude)
Behavioral
Lead sponsor
Michael Rhoads
Other
Eligibility
9 Years to 18 Years
Enrollment
234 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024
U.S. locations
1
States / cities
Grand Junction, Colorado
Source: ClinicalTrials.gov public record
Updated Jul 14, 2025 · Synced May 22, 2026, 1:23 AM EDT
Completed No phase listed Observational
View directory record Official record
Conditions
Sickle Cell Disease
Interventions
Not listed
Lead sponsor
National Institutes of Health Clinical Center (CC)
NIH
Eligibility
18 Years and older
Enrollment
27 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Aug 31, 2020 · Synced May 22, 2026, 1:23 AM EDT
Completed Not applicable Interventional
View directory record Official record
Conditions
Type 2 Diabetes
Interventions
Positive Psychology
Behavioral
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years and older
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2014
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Apr 12, 2016 · Synced May 22, 2026, 1:23 AM EDT
Completed Not applicable Interventional
View directory record Official record
Conditions
Glaucoma
Interventions
Usual Care + Health Promotion Intervention
Behavioral
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
21 Years and older
Enrollment
441 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2022
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Apr 30, 2023 · Synced May 22, 2026, 1:23 AM EDT
Completed Not applicable Interventional Results available
View directory record Official record
Conditions
Bariatric Surgery
Interventions
Positive Psychology-Motivational Interviewing, Physical Activity Education Control
Behavioral
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years and older
Enrollment
58 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2025
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 26, 2026 · Synced May 22, 2026, 1:23 AM EDT
Recruiting Not applicable Interventional
View directory record Official record
Conditions
Postpartum Psychiatric Disorders
Interventions
Digital Mindfulness Training
Behavioral
Lead sponsor
Nina Ayala
Other
Eligibility
18 Years and older · Female only
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
2
States / cities
Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated Aug 23, 2025 · Synced May 22, 2026, 1:23 AM EDT
Terminated Not applicable Interventional
View directory record Official record
Conditions
Type 1 Diabetes Mellitus
Interventions
Cognitive Behavioral Therapy
Behavioral
Lead sponsor
Icahn School of Medicine at Mount Sinai
Other
Eligibility
7 Years to 11 Years
Enrollment
23 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2009
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jun 7, 2011 · Synced May 22, 2026, 1:23 AM EDT
Not listed No phase listed Observational Accepts healthy volunteers
View directory record Official record
Conditions
HIV
Interventions
Not listed
Lead sponsor
Mazonson & Santas Inc.
Industry
Eligibility
50 Years and older
Enrollment
1,049 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2022
U.S. locations
1
States / cities
Larkspur, California
Source: ClinicalTrials.gov public record
Updated Mar 16, 2020 · Synced May 22, 2026, 1:23 AM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Prosocial Behavior, Community Sense, Optimism, Anxiety, Social Competence, Self-Compassion, Stress, Psychological, Burnout, Professional, Efficacy, Self, Self Awareness
Interventions
Mindfulness-based social and emotional learning (MBSEL) program for educators, Mindfulness-based social and emotional learning (MBSEL) program for students
Behavioral
Lead sponsor
University of Illinois at Chicago
Other
Eligibility
Not listed
Enrollment
405 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Aug 22, 2024 · Synced May 22, 2026, 1:23 AM EDT
Completed No phase listed Observational
View directory record Official record
Conditions
Suicide, Attempted, Suicidal Ideation
Interventions
Not listed
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years and older
Enrollment
46 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Aug 7, 2014 · Synced May 22, 2026, 1:23 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Psychological Stress
Interventions
Resilience Curriculum
Other
Lead sponsor
University of Indianapolis
Other
Eligibility
Not listed
Enrollment
43 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2016
U.S. locations
2
States / cities
Indianapolis, Indiana
Source: ClinicalTrials.gov public record
Updated May 10, 2016 · Synced May 22, 2026, 1:23 AM EDT
Completed Not applicable Interventional Results available
View directory record Official record
Conditions
Bariatric Surgery
Interventions
Positive Psychology-Motivational Interviewing Intervention
Behavioral
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years and older
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Feb 1, 2026 · Synced May 22, 2026, 1:23 AM EDT
Recruiting No phase listed Observational Accepts healthy volunteers
View directory record Official record
Conditions
HIV
Interventions
Not listed
Lead sponsor
Mazonson & Santas Inc.
Industry
Eligibility
18 Years and older
Enrollment
200 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2026
U.S. locations
1
States / cities
Menlo Park, California
Source: ClinicalTrials.gov public record
Updated Jan 25, 2022 · Synced May 22, 2026, 1:23 AM EDT