Assessment and Treatment of Cognitive Functioning Deficits in Veterans With PTSD (CCTPTSD)

January 6, 2026 updated by: VA Office of Research and Development
Approximately half a million Veterans receiving services at the VA have Posttraumatic Stress Disorder (PTSD). PTSD is strongly associated with cognitive functioning deficits in areas of concentration, attention, memory, learning, verbal abilities, processing speed, and multitasking. Compensatory Cognitive Training (CCT) is an evidence-based intervention for cognitive problems that is effective in other Veteran populations such as those with a history of traumatic brain injury (TBI), but CCT has not yet been tested in Veterans with PTSD who don't have a history of TBI. The investigators will conduct a pilot randomized controlled trial (RCT) of CCT in Veterans who have been treated for PTSD but continue to have cognitive functioning deficits. The investigators will examine feasibility, acceptability, participant characteristics, and effect size estimates in preparation for a fully-powered RCT of CCT for PTSD-related cognitive functioning deficits.

Study Overview

Detailed Description

Project Background: PTSD is associated with deficits in cognitive functioning including memory, learning, processing speed, concentration, attention, and executive functioning. Though many Veterans benefit from evidence-based psychotherapy (EBP) for PTSD, many Veterans have cognitive functioning deficits even after completing EBP for PTSD. There are no evidence-based treatments for these Veterans. Compensatory Cognitive Training (CCT) is improves cognitive functioning in Veterans with brain injury history, but is not yet tested in Veterans with PTSD.

Project Aims: This study will evaluate feasibility, acceptability, and participant characteristics, and estimate effect sizes, in a pilot test of CCT for Veterans with PTSD-related cognitive problems. Data from this study will form the basis for a future, fully powered trial testing the effectiveness of CCT for cognitive problems in Veterans with PTSD.

Project Methods: The investigators will recruit Veterans from local VA mental health clinics, using the VA's Corporate Data Warehouse (CDW) to identify potentially eligible Veterans if needed. The investigators will compare CCT vs. treatment as usual for 36 Veterans with PTSD-related cognitive functioning deficits. The investigators will calculate rates of recruitment, retention, and intervention participation. Statistical significance will be examined, though the investigators' focus will be on effect size estimates, score ranges, and variability to plan for a follow-up, fully powered RCT.

Anticipated Impact: PTSD-related cognitive functioning deficits are a significant problem for many Veterans. CCT is an effective cognitive rehabilitation intervention for Veterans with a history of brain injury, but VA clinicians need data on its effectiveness for Veterans with PTSD-related cognitive functioning deficits. These studies will provide the data necessary for a larger scale RCT proposal if results show that CCT is as promising as expected for Veterans with PTSD.

Study Type

Interventional

Enrollment (Actual)

21

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

    • Oregon
      • Portland, Oregon, United States, 97207-2964
        • VA Portland Health Care System, Portland, OR

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years to 75 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Eligible Veterans must meet Diagnostic and Statistical Manual 5 (DSM-5) criteria for PTSD with evidence-based PTSD treatment participation within the past 2 years.
  • Must have an individual mental health provider/case manager assigned for coordination of care and management of crises as well as provision of treatment as usual if Veteran is randomly assigned to this condition.
  • Report subjective cognitive complaints, such as problems with memory, attention/concentration, and executive function (e.g., planning, organization, problem-solving, decision-making).
  • Referring provider observes mild cognitive problems that interfere with daily life (e.g., forgetting appointments or medications, poor performance at work or school, difficulty remembering information, trouble focusing in treatment sessions, trouble following through on goals).
  • Fluent English speaker.
  • Able to read and write and provide informed consent.

Exclusion Criteria:

  • No history of traumatic brain injury (tbi) of any severity or another major medical condition likely to significantly impact cognitive functioning such as stroke, multiple sclerosis (MS), Parkinson's, or a brain tumor.
  • Do not meet criteria for bipolar disorder or a psychotic disorder. Do not have a diagnosis of a substance dependence disorder within the past 30 days.
  • Do not have active suicidal intent indicating significant clinical risk (which would suggest that a treatment targeting suicidal intent is indicated).
  • Cognitive problems are not severe (i.e., no dementia). Cognitive problems do NOT interfere with a Veteran's overall ability to live independently or care for him/herself.
  • Not currently participating in any type of brain stimulation treatment.
  • No significant auditory/visual impairments.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Single

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Compensatory Cognitive Training (CCT)
Compensatory Cognitive Training draws from the theoretical literature on compensatory strategy training for other cognitively impaired populations (e.g., Huckans et al., 2013; Twamley et al., 2010; Storzbach et al., 2016). It is a rehabilitation model that aims to teach individuals strategies that allow them to work around cognitive deficits. Consistent with this model and the expert recommendations for civilians and Service members with TBI (Cicerone, 2011), manualized CCT treatment provides training in compensatory attention and learning/memory skills, formal problem-solving strategies applied to daily problems, and the use of external aids such as calendar systems and assistive devices to promote completion of daily tasks (Storzbach et al., 2016).
Compensatory Cognitive Training draws from the theoretical literature on compensatory strategy training for other cognitively impaired populations (e.g., Huckans et al., 2013; Twamley et al., 2010; Storzbach et al., 2016). It is a rehabilitation model that aims to teach individuals strategies that allow them to work around cognitive deficits. Consistent with this model and the expert recommendations for civilians and Service members with TBI (Cicerone, 2011), manualized CCT treatment provides training in compensatory attention and learning/memory skills, formal problem-solving strategies applied to daily problems, and the use of external aids such as calendar systems and assistive devices to promote completion of daily tasks (Storzbach et al., 2016).
Other Names:
  • CCT
Active Comparator: Treatment as Usual (TAU)
All TAU participants have an ongoing VA mental health provider and received ongoing mental health care during the course of the study (generally weekly individual or group sessions focusing on evidence-based PTSD treatment).
All TAU participants have an ongoing VA mental health provider and received ongoing mental health care during the course of the study (generally weekly individual or group sessions focusing on evidence-based PTSD treatment).
Other Names:
  • TAU

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Prospective-Retrospective Memory Questionnaire (PRMQ; Crawford et al., 2006)
Time Frame: change from baseline to 3 and 6 months
Self-report severity measure of prospective (remembering to do something in the future) and retrospective (remembering something from the past) memory problems relevant to every day life. Higher scores represent worse outcomes. Total score ranges from 0-64.
change from baseline to 3 and 6 months
Multiple Sclerosis Neuropsychological Screening Questionnaire - Patient Version (MSNQ; Benedict et al., 2003)
Time Frame: change from baseline to 3 and 6 months
Self-report severity measure of attention and organizational problems. Scores on the MSNQ range from 0 to 58, with higher scores indicating greater cognitive impairment.
change from baseline to 3 and 6 months
California Verbal Learning Test (CVLT-II; Delis et al., 2000)
Time Frame: change from baseline to 3 and 6 months
Comprehensive measurement of verbal learning and memory and includes a forced choice validity. The total raw score is the sum of correct responses on the five presentations; scores range from 0-80. Higher scores represent better outcomes.
change from baseline to 3 and 6 months
Wechsler Adult Intelligence Scale (WAIS-IV) Coding Subtest (Wechsler, 2008)
Time Frame: change from baseline to 3 and 6 months
A measure of processing speed. Higher scores represent better outcomes. Scores range from 0-155.
change from baseline to 3 and 6 months
Controlled Oral Word Association Test (Benton, Hamsher, & Sivan, 1983)
Time Frame: change from baseline to 3 and 6 months
The Controlled Oral Word Association (COWA) Test measures word generation, verbal fluency, and executive functioning. Participants are asked to name as many words as they can starting with a specific letter (i.e., F, A, S) within one minute, and as many words as possible in a specified category (i.e., animals) within one minute. Total score is the sum of responses (three letter trials, one category trial). Higher scores represent better outcomes. Total score ranges are affected by age and education.
change from baseline to 3 and 6 months
Halstead Reitan Trailmaking Test (Trails A & B; Reitan & Wolfson, 1985)
Time Frame: change from baseline to 3 and 6 months
Measures visual tracking, processing speed, and executive functioning. Scores represent the amount of time to complete the task (in seconds), range from 10-366, and higher numbers represent worse outcomes.
change from baseline to 3 and 6 months
World Health Organization Disability Assessment Scale (WHODAS 2.0)
Time Frame: change from baseline to 3 and 6 months
Self-report measure of quality of life and global functioning. Higher scores represent worse outcomes. Total score ranges from 0-144.
change from baseline to 3 and 6 months
Quality of Life in Neurological Disorders (Neuro-QOL): Cognitive, Ability to Participate in Social Roles and Activities, and Sleep Scales
Time Frame: change from baseline to 3 and 6 months
Self-report measure of quality of life, cognitive functioning, sleep functioning, and social functioning. Higher scores represent lower functioning. Total scores range from 52 to 260.
change from baseline to 3 and 6 months
Memory Compensation Questionnaire (MCQ; de Frias & Dixon, 2005)
Time Frame: change from baseline to 3 and 6 months
A 44-item self-report questionnaire that rates the extent of use of various strategies to improve memory performance relevant to daily living. Higher scores represent better outcomes. Total score ranges from 0-176.
change from baseline to 3 and 6 months
Portland Cognitive Strategies Scale 2.0 (PCSS)
Time Frame: change from baseline to 3 and 6 months
Measures compensatory cognitive strategy use through two scales; how often skills are used and how useful. Higher scores represent more skill use and more perceived usefulness. Total score ranges from 0-60 per scale.
change from baseline to 3 and 6 months
Wechsler Adult Intelligence Scale (WAIS-IV) Digit Span Subtest (Wechsler, 2008)
Time Frame: change from baseline to 3 and 6 months
Measures attention, working memory, processing speed, and reliable digit span validity. Higher scores represent better outcomes. Scores on each subtest (forward, backward, and sequential) range from 0-16 and are reported as WAIS Scaled Scores. Total score (range 0-48) is the sum of each subtest.
change from baseline to 3 and 6 months

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
PTSD Checklist (PCL-5; Weathers et al., 2013)
Time Frame: change from baseline to 3 and 6 months
PTSD symptoms and severity. Higher scores indicates more severe symptomology. Total score ranges from 0-80.
change from baseline to 3 and 6 months
Patient Health Questionnaire (PHQ-9; Spitzer, Kroenke, & Williams, 1999)
Time Frame: change from baseline to 3 and 6 months
A brief, nine-item depression assessment questionnaire used to screen for depression and monitor its severity. Higher scores represent worse outcomes. Total score ranges from 0-27.
change from baseline to 3 and 6 months

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Investigators

  • Principal Investigator: Maya Elin O'Neil, PhD MS, VA Portland Health Care System, Portland, OR

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

March 6, 2019

Primary Completion (Actual)

September 29, 2024

Study Completion (Actual)

December 29, 2025

Study Registration Dates

First Submitted

October 3, 2018

First Submitted That Met QC Criteria

October 3, 2018

First Posted (Actual)

October 4, 2018

Study Record Updates

Last Update Posted (Actual)

January 23, 2026

Last Update Submitted That Met QC Criteria

January 6, 2026

Last Verified

January 1, 2026

More Information

Terms related to this study

Other Study ID Numbers

  • D2762-W
  • 1IK2RX002762-01A1 (U.S. NIH Grant/Contract)

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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