Conditions

Military Combat Performance

Keywords

Attention Bias ModificationRandomized Control TrialEye-tracking

Outcome Measures

Primary Outcomes (1)

Change in Combat Performance
Composite scores for Static marksmanship, simulator shooting performance (Bagira), running test grades, and obstacle course grades will be gathered from soldiers' commanders before and after intervention sessions to test for change.
Approximately 3 months after baseline

Secondary Outcomes (3)

Post-Combat Trauma
Change from baseline Post-Combat PTSD Symptoms at approximately 3 months
Post-Combat General Anxiety
Change from baseline Post-Combat General Anxiety Symptoms at approximately 3 months
Post-Combat Depression
Change from baseline Post-Combat Depression Symptoms at approximately 3 months

Other Outcomes (3)

Post-Training RT-based Attention Bias toward threat
Change from baseline Attention Bias within 3 months of baseline measurement
Post-Training Subjective Attention Bias toward threat
Change from baseline Attention Bias within 3 months of baseline measurement
Post-Training Eye-tracking Attention Bias toward threat
Change from baseline Attention Bias within 3 months of baseline measurement

Study Arms (3)

Gaze-Contingent Feedback Training (toward threat)

EXPERIMENTAL

In the task, 30 different matrices, each consisting of 16 faces, will be presented. Each matrix includes 8 angry faces and 8 neutral, 8 women and 8 men, and the locations are counterbalanced between matrices. The participants are asked to view the matrices in any way they choose, and the eye-tracking camera records their viewing location relative to the stimuli presented on the screen. At the beginning of each training session, the soldier will choose to which music he would like to listen during the 12-minute session from a diverse list of music. After calibrating the eye-tracker, the participant will be instructed to view matrices of faces as he chooses, as described above in the assessment task. The music chosen by the participant will play only when he is looking at threatening faces and it will stop when he looks at neutral faces. Thus, a change in viewing patterns is expected by implementing operant conditioning principles.

Behavioral: Gaze-Contingent Feedback Training

Active Comparator: RT-Based Attention Bias Modification (toward threat)

ACTIVE COMPARATOR

A dot-probe task of 160 trials. Trials begins with a fixation cross (+), on which the participant is asked to focus (500ms). Then two face stimuli (one angry one neutral) are presented above and below the fixation cross (500ms). After the stimuli disappear, a target probe (right- or left-pointing arrowhead) appears in place of one of the face stimuli. The participant is asked to indicate which target probe was presented using a predetermined key. The target probe will remain on the screen until response, after which a new trial will begin. Participants are instructed to identify the probe type as quickly and accurately as possible. In the training task, all of the target probes will appear in the threat location (angry face). Thus, over multiple trials, learning is expected to occurs such that the threatening face predicts the location of the target probe, thereby achieving the desired change in attention pattern.

Interventions

Gaze-Contingent Feedback TrainingBehavioral

Feedback according to participants' viewing patterns, in order to modify their attention toward threat stimuli.

Gaze-Contingent Feedback Training (toward threat)

Attention Bias ModificationBehavioral

Attention training via repeated trials of a dot-probe task intended to direct attention toward threat stimuli using threat and neutral face stimuli.

Active Comparator: RT-Based Attention Bias Modification (toward threat)

Eligibility Criteria

Age18 Years+

Sexmale

Healthy VolunteersYes

Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

Each soldier from the cohort that will give his written consent will be able to participate in the study.

You may not qualify if:

Sponsors & Collaborators

Tel Aviv University
Otherlead

Study Sites (1)

Tel Aviv University

Tel Aviv, 6997801, Israel

Related Publications (1)

Wald I, Fruchter E, Ginat K, Stolin E, Dagan D, Bliese PD, Quartana PJ, Sipos ML, Pine DS, Bar-Haim Y. Selective prevention of combat-related post-traumatic stress disorder using attention bias modification training: a randomized controlled trial. Psychol Med. 2016 Sep;46(12):2627-36. doi: 10.1017/S0033291716000945. Epub 2016 Jul 5.
PMID: 27377418BACKGROUND

Study Officials

Yair Bar-Haim, PhD
Tel Aviv University
PRINCIPAL INVESTIGATOR

Study Stopped

Improving Performance of Combat Soldiers by Utilizing Attentional Training Based on Eye Tracking

Brief Summary

Registry Overview

Trial Relationships

Study Timeline

Study Start

First Submitted

First Posted

Primary Completion

Study Completion

Conditions

Keywords

Outcome Measures

Primary Outcomes (1)

Secondary Outcomes (3)

Other Outcomes (3)

Study Arms (3)

Gaze-Contingent Feedback Training (toward threat)

Active Comparator: RT-Based Attention Bias Modification (toward threat)

Interventions

Eligibility Criteria

You may qualify if:

You may not qualify if:

Sponsors & Collaborators

Study Sites (1)

Related Publications (1)

Study Officials

Enrollment

Study Design

Study Record Dates

Non-Contingent Feedback Training

Data Sharing

Source record

Locations

Brief Summary

Registry Overview

Trial Relationships

Related Scientific Literature

Study Timeline

Study Start

First Submitted

First Posted

Primary Completion

Study Completion

Conditions

Keywords

Outcome Measures

Primary Outcomes (1)

Secondary Outcomes (3)

Other Outcomes (3)

Study Arms (3)

Gaze-Contingent Feedback Training (toward threat)

Active Comparator: RT-Based Attention Bias Modification (toward threat)

Interventions

Eligibility Criteria

You may qualify if:

You may not qualify if:

Sponsors & Collaborators

Study Sites (1)

Related Publications (1)

Study Officials

Enrollment

Study Design

Study Record Dates

Non-Contingent Feedback Training

Data Sharing

Source record

Locations