Assessing Change in Short Term Therapy for Depression

NCT ID: NCT02134678

Last Updated: 2015-05-01

Basic Information

• Recruitment Status: COMPLETED
• Clinical Phase: NA
• Total Enrollment: 56 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2011-05-31
• Study Completion Date: 2014-11-30

Brief Summary

This study will compare mechanisms of action in two forms of brief psychotherapy for major depressive disorder in adults. A treatment that targets deficits in motivation in depression is expected to show greater improvements in motivation and pursuit of personal goals compared to a second treatment that targets irrational thoughts that are typical in depression.

Detailed Description

Outcome studies have shown that several forms of psychotherapy are effective for depression, but questions about how, why, and when these treatments work remain. The proposed study answers the call for innovative research designs that allow for more intensive, individualized data collection that can address complex questions about the dynamic nature of treatment-related change. In this R21 application, we propose a proof-of-concept study using an innovative application of experience sampling methodology (ESM) that combines the idiographic advantages of single-subject research with the statistical advantages associated with larger samples and multilevel analyses. ESM involves sampling aspects of behavior occurring in the participant's everyday environment, thereby enhancing ecological validity and reducing retrospective bias. Thirtyfour adults with primary major depressive disorder will be randomly assigned to 16 weeks of either selfsystem therapy (SST), a new short-term, empirically-supported psychotherapy for depression that targets deficits in incentive motivation and goal pursuit, or treatment-as-usual (TAU). Participants will complete a battery of individual difference and diagnostic measures at pretreatment. One week of intensive ESM will be collected at both pre- and post-treatment, during which participants will be signaled at random times during each day to answer questions about current functioning in several domains (e.g., affect, cognition, and goal pursuit) delivered via a phone-based interactive voice response (IVR) system. Throughout the 16 weeks of treatment, participants will complete similar IVR assessments on two randomly-selected days per week. The proposed study will test three main hypotheses. (1) Patients in SST will show greater increases in engagement with promotion goals and activities as well as greater increases in goal-related daily experiences of positive affect over the course of treatment compared to patients in TAU. (2) Patients in SST will show greater decreases in engagement with prevention goals and activities as well as greater decreases in goal- related daily experiences of negative affect over the course of treatment compared to patients in TAU. (3) Within the SST condition, a history of failure to pursue or achieve promotion goals and individual differences in chronic regulatory orientation (i.e., strength of orientation toward promotion and prevention goals) will moderate the effects of SST on changes in depressive symptoms and on daily experiences of promotion goal engagement. The proposed research will have a significant impact on an important public health problem and will expand our knowledge of how psychotherapy for depression works. The data to be obtained from this study will provide a sound empirical and theoretical framework for largerscale programmatic research on the nature of treatment-induced change processes in patients with depression.

Conditions

Depression

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: PARALLEL
• Primary Study Purpose: BASIC_SCIENCE
• Blinding Strategy: NONE

Study Groups

self-system therapy

self-system therapy for depression

Group Type: EXPERIMENTAL

self-system therapy

Intervention Type: BEHAVIORAL

cognitive therapy

cognitive therapy for depression

Group Type: ACTIVE_COMPARATOR

cognitive therapy

Intervention Type: BEHAVIORAL

Interventions

self-system therapy

Intervention Type: BEHAVIORAL

cognitive therapy

Intervention Type: BEHAVIORAL

Eligibility Criteria

Inclusion Criteria

• primary diagnoses of major depressive disorder or dysthymia
• age 18-60

Exclusion Criteria

• bipolar
• substance abuse
• acute suicidality
• antisocial or borderline personality disorder
• cognitive impairment

• Minimum Eligible Age: 18 Years
• Maximum Eligible Age: 60 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: No

Sponsors

University of North Carolina, Greensboro

OTHER

Sponsor Role: lead

Responsible Party

Kari M Eddington

Assistant Professor

Responsibility Role: PRINCIPAL_INVESTIGATOR

Locations

UNC Greensboro

Greensboro, North Carolina, United States

Countries

United States

References

Eddington KM, Silvia PJ, Foxworth TE, Hoet A, Kwapil TR. Motivational deficits differentially predict improvement in a randomized trial of self-system therapy for depression. J Consult Clin Psychol. 2015 Jun;83(3):602-616. doi: 10.1037/a0039058. Epub 2015 Apr 13.

Reference Type: DERIVED

PMID: 25867448 (View on PubMed)

Other Identifiers

1R21MH090414-01A1

Identifier Type: NIH

Identifier Source: org_study_id

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