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Completed

NCT Number: NCT02330627

Positive Valence System Enhancement Treatment for Anxiety and Depression: Clinical Efficacy and Neural Changes

The proposed project aims to test the efficacy and neural correlates of a behavioral treatment program comprised of positive activity interventions in a sample of individuals seeking treatment for anxiety or depression. Participants will be randomly assigned to an immediate or delayed treatment condition, and will be compared on measures of positive and negative emotions, brain responses to reward and punishment/loss, subjective well-being, and symptoms at baseline and post-treatment.

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Key information

Conditions

Anxiety Disorders and Symptoms Anxiety Disorders Behavior Behavioral Symptoms Depression Mental Disorders

Age range

18 year–55 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

UCSD Psychiatry Clinical Research

La Jolla, California, 92037-0855, United States

About this study

Current treatment approaches for anxiety and depression emphasize the reduction of negative emotions and distress as the central goal of treatment. However, these conditions are also characterized by low levels of positive emotions, which, although fundamental for life satisfaction and well-being, have traditionally not been a focus of treatment. The proposed project aims to test the efficacy of an integrated treatment regimen designed to modulate functioning of core component processes of the positive emotion system. Specifically, we will implement positive emotion enhancement procedures, previously tested and validated in non-clinical samples (Huffman et al., 2011; Lyubomirsky et al., 2005), in a broad community sample of n=30 individuals seeking treatment for anxiety or depression. Participants will be randomly assigned to a multi-session positive valence system targeted treatment (n=15) or a waitlist control group (n=15). Participants will be assessed at baseline and post-treatment and compared on measures of positive and negative emotions, brain responses to reward and punishment/loss, subjective well-being, and symptoms. Aim 1 will test the hypothesis that participants assigned to the positive emotion enhancement intervention will display greater increases in positive affect and enhanced activity in neural systems that regulate responses to reward (e.g., nucleus accumbens) relative to participants in the waitlist control group. Aim 2 will explore whether the effects of the positive emotion system treatment generalize to parallel measures of the negative emotion system (i.e., negative affect and neural reactivity to aversive outcomes). We will also explore the effects of the intervention on subjective well-being and life satisfaction, and will examine the relationship between changes in subjective emotions and neural indices of positive and negative valence functioning with changes in well-being and life satisfaction.

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Score on the PHQ-9 is 10 or higher and/or score on the OASIS is 8 or higher.
  • Between the ages of 18-55, inclusive.
  • Have sufficient proficiency in the English language to understand and complete interviews, questionnaires, and all other study procedures.

Exclusion criteria

  • No telephone or easy access to telephone.
  • Any substance use disorder in the past year except subjects with mild alcohol, nicotine, caffeine, and marijuana use disorders will be permitted in the study.
  • Bipolar I or Psychotic disorders.
  • Moderate to severe traumatic brain injury with evidence of neurological deficits, neurological disorders, or severe or unstable medical conditions that might be compromised by participation in the study.
  • Current and regular use (more days than not during the past 30 days) of a medication that could affect brain functioning, such as anxiolytics, antipsychotics, antidepressants, mood stabilizers, beta-blockers, sleep medications, opioids/codeine, migraine medications.
  • MRI contraindications including: cardiac pacemaker, metal fragments in eyes/skin/body (shrapnel), aortic/aneurysm clips, prosthesis, by-pass surgery/coronary artery clips, hearing aid, heart valve replacement, shunt (ventricular or spinal), electrodes, metal plates/pins/screws/wires, or neuro/bio-stimulators (TENS unit), persons who have ever been a metal worker/welder, history of eye surgery/eyes washed out because of metal, vision problems uncorrectable with lenses, inability to lie still on one's back for 60 minutes; prior neurosurgery; tattoos with metal dyes, unwillingness to remove body piercings, and pregnancy.
  • non-correctable vision or hearing problems, as some tests require intact sensory functioning.
  • Concurrent psychosocial treatment: Participants completing ongoing psychosocial treatment will be required to meet a 12-week stability criteria so that symptom changes as a result of other psychosocial treatments are not confounded with changes due to the research.
  • Inability to complete the initial assessment battery or treatment sessions.
  • Clinical conditions assessed by the interviewer that necessitate more imminent clinical care (e.g., active suicidal ideation). These criteria are in place so participants with these other, more several symptoms can be referred for appropriate mental health services.

Treatment and study plan

Positive Valence System Treatment

Behavioral

Clinician-administered one-hour treatment sessions focused on presenting rationale and instructions for completing positive activity exercises (e.g., gratitude, acts of kindness) between sessions.

Primary outcomes

  1. Change From Baseline in Positive Affect (Positive and Negative Affect Schedule; Modified Differential Emotions Scale; Composite)

    Time frame: Baseline, 10 weeks

    The Positive and Negative Affect Schedule (PANAS) measures positive affect. Items are answered on a 5 point scale, 1 (Very slightly or not at all) to 5 (Extremely). The positive affect scale ranges from 10-50 and higher scores indicate greater levels of positive affect.

    The Modified Differential Emotions Scale (mDES) measures positive emotions. Items are answered on a 5 point scale, 0 (Never/Not at all) to 4 (Most of the time/Extremely). Higher scores on the positive emotions sub-scale indicate higher levels of positive emotion.

    Participants' scores on the PANAS and mDES were first standardized across assessment sessions by converting to Z scores (M=0, SD=1) across both groups. The composite index of positive affect at each assessment point was the mean of the Z scores for that occasion. Higher z-scores indicate an increase in positive affect from baseline to post-treatment.

  2. Change From Baseline in Blood Oxygen Level Dependent (BOLD) Response in the Striatum and Medial Prefrontal Cortex, as Measured With Functional Magnetic Resonance Imaging (fMRI) During Reward Trials on the Monetary Incentive Delay (MID) Task

    Time frame: Baseline, 10 weeks

    Change from pre- to post-assessment in neural activation during reward trials on the MID task.

Secondary outcomes

  1. Change From Baseline in Negative Affect (Positive and Negative Affect Schedule; Modified Differential Emotions Scale; Composite)

    Time frame: Baseline, 10 weeks

    The Positive and Negative Affect Schedule (PANAS) measures negative affect. Items are answered on a 5 point scale, 1 (Very slightly or not at all) to 5 (Extremely). The negative affect scale ranges from 10-50 and lower scores indicate lower levels of negative affect.

    The Modified Differential Emotions Scale (mDES) measures negative emotions. Items are answered on a 5 point scale, 0 (Never/Not at all) to 4 (Most of the time/Extremely). Lower scores on the negative emotions sub-scale indicate lower levels of negative emotion.

    Participants' composite scores on the PANAS and mDES were first standardized across assessment sessions by converting to Z scores (M=0, SD=1) across both groups. The composite index of negative affect at each assessment point (i.e., pre assessment - at baseline, post assessment - 10 weeks after baseline) was the mean of the Z scores for that occasion. Lower z-scores indicate a decrease in negative affect from baseline to post-treatment.

  2. Change From Baseline in Blood Oxygen Level Dependent (BOLD) Response in the Striatum and Insula, as Measured With Functional Magnetic Resonance Imaging (fMRI) During Loss Trials on the Monetary Incentive Delay (MID) Task

    Time frame: Baseline, 10 weeks

    Change from pre- to post-assessment in neural activation during loss trials on the MID

Other outcomes

  1. Change From Baseline in Quality of Life and Well-being (Composite of Quality of Life, Enjoyment, and Satisfaction Questionnaire; Satisfaction With Life Scale)

    Time frame: Baseline, 10 weeks

    The Quality of Life, Enjoyment, and Satisfaction Questionnaire (Q-LES-Q) measures the degree of satisfaction experienced by participants in various areas of daily functioning. Items are rated on a 5 point scale, 1 (Very Poor) to 5 (Very Good). The scale ranges from 14-70; higher scores indicate higher levels of life satisfaction.

    The Satisfaction With Life Scale (SWLS) measures global cognitive judgments of one's life satisfaction. Items are rated on a 7 point scale, 1 (Strongly Disagree) to 7 (Strongly Agree). The scale ranges from 5-35; higher scores indicate higher levels of life satisfaction.

    Participants' scores on the Q-LES-Q and the SWLS were first standardized across assessment sessions by converting to Z scores (M=0, SD=1) across both groups. The composite index of quality of life and well-being at each assessment point was the mean of the Z scores for that occasion. Higher z-scores indicate an increase in quality of life and well-being from baseline to post-treatment.

  2. Change From Baseline in Anxiety (Overall Anxiety Severity and Impairment Scale; State Trait Anxiety Inventory - Trait Composite)

    Time frame: Baseline, 10 weeks

    The Overall Anxiety Severity and Impairment Scale (OASIS) measures frequency, severity, and functional impairment of anxiety symptoms. Items are rated on a 4 point scale, 0 (None) to 4 (Extreme). The scale ranges from 0-20 and higher scores indicate higher levels of anxiety.

    The State Trait Anxiety Inventory - Trait (STAI-T) measures general anxiety. Items are rated on a 4 point scale, 1 (Almost Never) to 4 (Almost Always). The scale ranges from 20-80 and higher scores indicate higher levels of anxiety.

    Participants' composite scores on the OASIS and the STAI were first standardized across assessment sessions by converting to Z scores (M=0, SD=1) across both groups. The composite index of anxiety at each assessment point (i.e., pre assessment - at baseline, post assessment - 10 weeks after baseline) was the mean of the Z scores for that occasion. Lower z-scores indicate a decrease in anxiety from baseline to post-treatment.

  3. Change From Baseline in Depression (Patient Health Questionnaire-9; Beck Depression Inventory-II Composite)

    Time frame: Baseline, 10 weeks

    The Patient Health Questionnaire-9 (PHQ-9) measures depression symptoms. Items are rated on a 4 point scale, 0 (Not at all) to 3 (Nearly every day). The scale ranges from 0-27 and higher scores indicate higher levels of depression.

    The Beck Depression Inventory-II (BDI-II) measures the severity of depression. Participants choose 1 of 4 response options; a value of 0 to 3 is assigned to each response option. The scale ranges from 0-63 and higher scores indicate higher severity of depression.

    Participants' composite scores on the PHQ-9 and the BDI-II were first standardized across assessment sessions by converting to Z scores (M=0, SD=1) across both groups. The composite index of depression at each assessment point (i.e., pre assessment - at baseline, post assessment - 10 weeks after baseline) was the mean of the Z scores for that occasion. Lower z-scores indicate a decrease in depression from baseline to post-treatment.

Sponsors and collaborators

Lead sponsor

University of California, San Diego

Other

Collaborators

  • National Institutes of Health (NIH)

Registry information

Important dates

Study start
2014
Primary completion
2015
Study completion
2016
First posted
Jan 5, 2015
Registry last updated
Nov 8, 2021

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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