Clinical trial Recruiting at 1 site Interventional Ages 18 and up

Smartphone-delivered Therapeutic Evaluative Conditioning for suicidal thoughts and behavior

Official title: A One-Arm Open Trial of a Smartphone Delivered Treatment for Suicidal Thoughts and Behavior

Run by Massachusetts General Hospital · NCT06967545 · Data updated 2026-11-12

This study will test whether a smartphone program called Therapeutic Evaluative Conditioning (TEC-S) can reduce suicidal thoughts and behaviors in adults who have had frequent recent suicide ideation.

Quick facts

Study typeInterventional
Ages18 Years and up
SexAll
Enrollment20 (estimated)
SponsorMassachusetts General Hospital
Academic / other
Locations1 site (Boston, Massachusetts)
StatusRecruiting
StartedJanuary 20, 2026
Main results expectedOctober 1, 2026
Study endsDecember 31, 2026
Registry record updatedJuly 10, 2026
Trial IDNCT06967545 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Adults 18 or older who live in the Boston metropolitan area, have experienced frequent recent suicidal ideation (about ≥5 days in the past month), own an iOS or Android smartphone, and can provide informed consent and an emergency contact are the ideal candidates.

Probably not a fit

People with recent hypo/manic symptoms, recent homicidal ideation, a lifetime psychosis-spectrum diagnosis, those judged to be at acute imminent suicide risk, or individuals living outside the Boston area or without a smartphone are unlikely to be eligible or to benefit from this pilot.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This one-arm open trial will enroll 20 adults in the greater-Boston area who report recent and frequent suicidal thoughts or behaviors. Participants will complete ecological momentary assessments (EMA) three times daily and will have optional access to the smartphone-delivered Therapeutic Evaluative Conditioning for Suicide (TEC-S) intervention. The intervention uses classical evaluative conditioning delivered via phone to try to change attitudes toward suicide, and weekly behavioral and self-report measures will track hypothesized mechanisms and outcomes. The primary aims are to test safety, acceptability, and preliminary efficacy of TEC-S in reducing suicidal thoughts and behaviors.

Why it matters

Potential benefit: If successful, TEC-S could provide a low-burden, widely accessible smartphone option to help reduce suicidal thoughts and behaviors by changing attitudes toward suicide.

How similar studies have gone: Similar smartphone- and EMA-based interventions for suicidal ideation have shown mixed but promising early results, while TEC-S specifically—applying evaluative conditioning to suicide-related attitudes—is relatively novel and largely untested.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Adults ages 18+
* Relatively frequent and recent (≥5 days within the past-month) active suicidal thoughts as assessed via SITBI-R.
* Willing and able to provide at least one emergency contact (name, phone number, relation).
* Owns an Android or iOS smartphone.
* Possesses at least occasional access to Wi-Fi-enabled internet for data down/uploads.
* Fluent in English and willing to provide informed consent.
* Living in the Boston metropolitan area (i.e., \~50 mile radius around Boston, MA)

Exclusion Criteria:

* Recent (past 3-month) hypo/manic symptoms or homicidal ideation or lifetime psychosis spectrum diagnosis as assessed via MINI 7.0.2.
* Recent acute suicide risk operationalized as affirmative responses to BOTH below items during structured clinical interview AND evaluation by the PI in consultation with Mentors/Advisor Drs. Wilhelm, Kleiman, and/or Bentley:
* At any time in past week: ≥ 8/10 current intent to act on suicidal thoughts (0 \["not at all"\] to 10 \["extremely strong"\]); AND
* At any time in past week: thought of a specific suicide plan (i.e, known method/means and/or location) with access to lethal means
* Impaired vision (e.g., legal blindness), technological illiteracy, or intellectual disability that might impair ability to provide valid data and/or informed consent.

Where it's running

  • Massachusetts General Hospital
    Boston, Massachusetts, United States
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.