Improving Depression Outcome by Enhancing Memory for Cognitive Therapy

Study Results

Results pending

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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Recruitment Status

COMPLETED

Clinical Phase

PHASE2

Total Enrollment

48 participants

Study Classification

INTERVENTIONAL

Study Start Date

2013-02-28

Study Completion Date

2015-03-31

Brief Summary

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Existing drug and talking therapies for major depressive disorder (MDD) fail to produce complete recovery. This study will determine if substantial improvements to one of the most promising therapies, cognitive therapy (CT), can be achieved by administering a carefully designed procedure to improve memory for the content of CT sessions. This is important because (a) memory deficits are common in MDD patients and (b) each CT therapy session typically covers a complex array of topics and various skills are taught.

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Detailed Description

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Background. Major depressive disorder (MDD) is one of the most prevalent psychiatric disorders and a leading cause of disability worldwide. Existing therapies fail to produce complete recovery. Progress toward improving outcome must include innovations that are safe, powerful, inexpensive and simple (for fast and effective dissemination). The proposed research seeks to test one such innovation. We seek to improve outcome by improving memory for the content of cognitive therapy (CT) sessions. CT is one of the most promising approaches to the treatment of MDD, yet there is room for improvement.

We believe that adding memory enhancing strategies to CT may improve MDD outcome because: (a) MDD is often characterized by memory impairment, (b) there is evidence that the memory impairment is modifiable, (c) CT typically entails the activation of emotion, (d) emotion can impair or bias memory and (e) there is evidence that memory for the content of therapy sessions is poor.

Aim. To evaluate if a strategy designed to enhance memory for the content of CT sessions improves treatment outcome for MDD. Cognitive support involves a series of specific procedures that support the encoding and retrieval stages of an episodic memory. It is hypothesized that CT+Cognitive Support, relative to CT-as-usual, will be associated with improved depression outcome at the end of treatment and 6 months after the completion of treatment.

Research Plan. A small pilot feasibility RCT will be conducted on adults with MDD (n = 48) who will be randomized to one of two groups: (a) CT+Cognitive Support (n = 24) or (b) CT-as-usual (n = 24). Outcome measures will be taken at baseline, end of treatment, and 6 months after treatment. Long-term objective. To provide the pilot data needed to prepare a larger scale intervention study focused on improving outcomes by improving memory for the content of therapy sessions. The outcomes, if positive, will have major public health implications because simple, inexpensive memory enhancing strategies can be readily included as a standard feature in all psychosocial treatments for a broad range of mental illness. Project

Conditions

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Major Depressive Disorder (MDD)

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

DOUBLE

Participants Outcome Assessors

Study Groups

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Cognitive Therapy plus Cognitive Support

Cognitive therapy for depression with cognitive support added

Group Type EXPERIMENTAL

Cognitive therapy for depression

Intervention Type BEHAVIORAL

Cognitive therapy (CT) for depression. There is evidence that CT for major depressive disorder (MDD) can be as effective as antidepressant medication for the initial treatment of moderate to severe MDD. Moreover, following the withdrawal of treatment, patients treated with CT are significantly less likely to relapse than patients treated with antidepressant medication and CT is at least as effective as antidepressant medication in preventing subsequent relapse. Over 14 sessions CT aims to alter the symptomatic expression of depression and reduce risk for subsequent episodes by correcting the negative beliefs and maladaptive information processing presumed to underlie the disorder and alter the systematic tendency to misperceive reality in a pessimistic fashion.

Cognitive support. An intervention to improve memory for the contents of therapy. Cognitive support involves a series of specific procedures that support the encoding and retrieval stages of an episodic memory.

Cognitive therapy

Cognitive therapy for depression

Group Type ACTIVE_COMPARATOR

Cognitive therapy for depression

Intervention Type BEHAVIORAL

Cognitive therapy (CT) for depression. There is evidence that CT for major depressive disorder (MDD) can be as effective as antidepressant medication for the initial treatment of moderate to severe MDD. Moreover, following the withdrawal of treatment, patients treated with CT are significantly less likely to relapse than patients treated with antidepressant medication and CT is at least as effective as antidepressant medication in preventing subsequent relapse. Over 14 sessions CT aims to alter the symptomatic expression of depression and reduce risk for subsequent episodes by correcting the negative beliefs and maladaptive information processing presumed to underlie the disorder and alter the systematic tendency to misperceive reality in a pessimistic fashion.

Cognitive support. An intervention to improve memory for the contents of therapy. Cognitive support involves a series of specific procedures that support the encoding and retrieval stages of an episodic memory.

Interventions

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Cognitive therapy for depression

Cognitive therapy (CT) for depression. There is evidence that CT for major depressive disorder (MDD) can be as effective as antidepressant medication for the initial treatment of moderate to severe MDD. Moreover, following the withdrawal of treatment, patients treated with CT are significantly less likely to relapse than patients treated with antidepressant medication and CT is at least as effective as antidepressant medication in preventing subsequent relapse. Over 14 sessions CT aims to alter the symptomatic expression of depression and reduce risk for subsequent episodes by correcting the negative beliefs and maladaptive information processing presumed to underlie the disorder and alter the systematic tendency to misperceive reality in a pessimistic fashion.

Cognitive support. An intervention to improve memory for the contents of therapy. Cognitive support involves a series of specific procedures that support the encoding and retrieval stages of an episodic memory.

Intervention Type BEHAVIORAL

Eligibility Criteria

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Inclusion Criteria

* diagnosis of major depressive disorder (MDD), first episode, recurrent or chronic, according to DSM-IV-TR criteria
* score of 24 or above on the Inventory of Depressive Symptomatology (IDS)-Clinician and 26 or above on the IDS-Self-report
* older than 18 years of age
* if taking medications for mood, medications must be stable for the past 4 weeks
* able and willing to give informed consent

Exclusion Criteria

* history of bipolar disorder
* history of psychosis (including schizophrenia, schizophreniform disorder, schizoaffective disorder, delusional disorder, or psychotic organic brain syndrome)
* current non-psychotic Axis I disorder if it constitutes the principal diagnosis and if it requires treatment other than that offered in the project (including anxiety disorders including active PTSD, somatoform disorders, dissociative disorders, or eating disorders, etc.)
* history of substance dependence in the past six months
* IQ below 80
* evidence of any medical disorder or condition that could cause depression or preclude participation in CT
* current suicide risk sufficient to preclude treatment on an outpatient basis

Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No