Studying the Modification of Attention Bias Remotely After Trauma
NCT ID: NCT04888169
Last Updated: 2025-12-24
Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
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COMPLETED
NA
1314 participants
INTERVENTIONAL
2023-04-20
2025-06-30
Brief Summary
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Detailed Description
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Conditions
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Keywords
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Study Design
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RANDOMIZED
PARALLEL
SUPPORTIVE_CARE
DOUBLE
Study Groups
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Attention Bias Modification - Word Stimuli
Attention bias modification training involves a probe detection task as follows: (1) a fixation cross appears on the screen for 500ms; (2) the fixation cross is replaced by two target stimuli (one threat word and one neutral word) that are displayed at the top and the bottom of the screen for 500ms; (2) the stimuli disappear and a visual probe appears (the letter E or F), in the location of one of the two stimuli until the participant responds to indicate whether the letter was an E or an F using response buttons at the bottom of the phone screen. In the active ABM condition, the probe replaces the neutral stimulus 100% of the time.
SMART Mobile App - Attention Bias Modification
ABM involves placing the probe behind the neutral stimulus on 100% of the trials.
Attention Bias Modification - Face Stimuli
Attention bias modification training involves a probe detection task as follows: (1) a fixation cross appears on the screen for 500ms; (2) the fixation cross is replaced by two target stimuli (one threatening face and one neutral face) that are displayed at the top and the bottom of the screen for 500ms; (2) the stimuli disappear and a visual probe appears (the letter E or F), in the location of one of the two stimuli until the participant responds to indicate whether the letter was an E or an F using response buttons at the bottom of the phone screen. In the active ABM condition, the probe replaces the neutral stimulus 100% of the time.
SMART Mobile App - Attention Bias Modification
ABM involves placing the probe behind the neutral stimulus on 100% of the trials.
Attention Control Training - Word Stimuli
Attention control training involves a probe detection task as follows: (1) a fixation cross appears on the screen for 500ms; (2) the fixation cross is replaced by two target stimuli (i.e. one threat word and one neutral word) that are displayed at the top and the bottom of the screen for 500ms; (2) the stimuli disappear and a visual probe appears (the letter E or F), in the location of one of the two stimuli until the participant responds to indicate whether the letter was an E or an F using response buttons at the bottom of the phone screen. In the active ACT condition, the probe replaces the neutral stimulus 50% of the time, and replaces the threat stimulus the other 50%.
SMART Mobile App - Attention Control Training
ACT involves placing the probe behind the neutral stimulus on 50% of trials, and behind the threat stimulus on 50% of trials.
Attention Control Training - Face Stimuli
Attention control training involves a probe detection task as follows: (1) a fixation cross appears on the screen for 500ms; (2) the fixation cross is replaced by two target stimuli (one threatening face and one neutral face) that are displayed at the top and the bottom of the screen for 500ms; (2) the stimuli disappear and a visual probe appears (the letter E or F), in the location of one of the two stimuli until the participant responds to indicate whether the letter was an E or an F using response buttons at the bottom of the phone screen. In the active ACT condition, the probe replaces the neutral stimulus 50% of the time, and replaces the threat stimulus the other 50%.
SMART Mobile App - Attention Control Training
ACT involves placing the probe behind the neutral stimulus on 50% of trials, and behind the threat stimulus on 50% of trials.
Placebo Attention Training - Word Stimuli
Placebo attention training involves a probe detection task as follows: (1) a fixation cross appears on the screen for 500ms; (2) the fixation cross is replaced by two target stimuli (two neutral words) that are displayed at the top and the bottom of the screen for 500ms; (2) the stimuli disappear and a visual probe appears (the letter E or F), in the location of one of the two stimuli until the participant responds to indicate whether the letter was an E or an F using response buttons at the bottom of the phone screen.
SMART Mobile App - Placebo Training
Placebo training only includes neutral stimuli.
Placebo Attention Training - Face Stimuli
Placebo attention training involves a probe detection task as follows: (1) a fixation cross appears on the screen for 500ms; (2) the fixation cross is replaced by two target stimuli (two neutral faces) that are displayed at the top and the bottom of the screen for 500ms; (2) the stimuli disappear and a visual probe appears (the letter E or F), in the location of one of the two stimuli until the participant responds to indicate whether the letter was an E or an F using response buttons at the bottom of the phone screen.
SMART Mobile App - Placebo Training
Placebo training only includes neutral stimuli.
Control - Questions
The Control - Questions condition will only deliver a set of daily questions for participants to answer. Questions will ask about a variety of psychological factors such as mood, stress experiences, daily exercise and more.
SMART Mobile App - Control
Participants will only answer questions.
Interventions
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SMART Mobile App - Attention Bias Modification
ABM involves placing the probe behind the neutral stimulus on 100% of the trials.
SMART Mobile App - Attention Control Training
ACT involves placing the probe behind the neutral stimulus on 50% of trials, and behind the threat stimulus on 50% of trials.
SMART Mobile App - Placebo Training
Placebo training only includes neutral stimuli.
SMART Mobile App - Control
Participants will only answer questions.
Eligibility Criteria
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Inclusion Criteria
* Score at or above 33 on the PCL-5,
* Able and willing to perform daily smartphone training for two weeks
* Fluent English comprehension.
* Owns Android or iPhone smartphone
Exclusion Criteria
* Active suicidality.
18 Years
65 Years
ALL
No
Sponsors
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San Francisco Veterans Affairs Medical Center
FED
University of California, San Francisco
OTHER
Responsible Party
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Principal Investigators
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Joshua Woolley, MD, PhD
Role: PRINCIPAL_INVESTIGATOR
UCSF, SFVAMC
Joaquin Anguera, PhD
Role: PRINCIPAL_INVESTIGATOR
University of California, San Francisco
Locations
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Tommy Atwater
San Francisco, California, United States
Countries
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Other Identifiers
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19-27541
Identifier Type: -
Identifier Source: org_study_id