Efficacy of Adding Interpersonal and Emotional Processing Therapy Techniques to Cognitive Behavioral Therapy to Treat Generalized Anxiety Disorder

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

NA

Total Enrollment

83 participants

Study Classification

INTERVENTIONAL

Study Start Date

1998-07-31

Study Completion Date

2005-12-31

Brief Summary

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This study will test a version of cognitive behavioral therapy for generalized anxiety disorders that incorporates interpersonal and emotional processing techniques.

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Detailed Description

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Generalized anxiety disorder (GAD) is characterized by chronic worry that interrupts normal functioning. Some research has shown cognitive behavioral therapy (CBT) to be an effective treatment for GAD, but only half of people treated with CBT for GAD experience treatment benefits long-term. Standard CBT for GAD may lose effectiveness over time because it does not address interpersonal and emotional processing problems. This study will determine the efficacy of a version of CBT with additional therapeutic techniques for addressing interpersonal interactions and emotional processing among adults with GAD.

Participation in this study will include 14 weeks of treatment and 2 years of follow-up visits. All participants will receive 14 weekly, 2-hour, individual therapy sessions and one maintenance session scheduled after completing treatment. During the first hour of each session, all participants will receive standard CBT. Participants will be randomly assigned to receive one of two therapies during the second hour: training in interpersonal and emotional processing techniques or listening therapy. Participants may continue taking their current medications if they maintain a fixed dosage and keep a daily dairy of medication use, starting 2 weeks before study entry and lasting throughout treatment.

In-depth study assessments will take place at baseline and after completing the 14 weeks of therapy. Assessments will include clinical interviews, self-report questionnaires, and a physiological measurement session. Questions will pertain to anxiety symptoms, self-perceptions, emotional experience, and perceptions of the world. The physiological measurement session will involve recording bodily reactions, including brain waves, heart rate, eye movement, and breathing, while performing simple perceptual tasks. Brief psychological assessments will also follow each therapy session. Follow-up assessments conducted 6, 12, and 24 months after completing treatment will involve interviews and questionnaires as well as recording a week's worth of medication diaries.

Conditions

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Generalized Anxiety Disorder

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

SINGLE

Outcome Assessors

Study Groups

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CBT plus supportive listening

14 weekly therapy sessions, the first hour of which will be devoted to standard CBT techniques and the second hour will be supportive listening

Group Type EXPERIMENTAL

CBT

Intervention Type BEHAVIORAL

supportive listening

Intervention Type BEHAVIORAL

CBT plus Interpersonal and emotional processing therapy

14 weekly therapy sessions, the first hour of which will be devoted to standard CBT techniques and the second hour will be Interpersonal and emotional processing therapy

Group Type ACTIVE_COMPARATOR

CBT

Intervention Type BEHAVIORAL

Interpersonal and emotional processing therapy

Intervention Type OTHER

Interventions

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CBT

Intervention Type BEHAVIORAL

Interpersonal and emotional processing therapy

Intervention Type OTHER

supportive listening

Intervention Type BEHAVIORAL

Eligibility Criteria

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Inclusion Criteria

* Principal diagnosis of generalized anxiety disorder (GAD), as defined by the DSM-IV and agreed on by two diagnostic interviewers
* Clinician's Severity Rating for GAD of 4 (moderate) or greater

Exclusion Criteria

* Concurrent psychosocial therapy or past adequate dosage of CBT
* Any medical contributions to anxiety
* Current substance abuse, psychosis, or organic brain syndrome

Minimum Eligible Age

18 Years

Maximum Eligible Age

65 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No