Neurocognitive Enhancement in Major Depressive Disorder (MDDNET)

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00998569
Recruitment Status : Completed
First Posted : October 20, 2009
Last Update Posted : August 31, 2015
Information provided by (Responsible Party):
Christopher Bowie, Queen's University

October 14, 2009
October 20, 2009
August 31, 2015
October 2009
March 2012   (Final data collection date for primary outcome measure)
Performance on paper and pencil assessments of neurocognition after treatment, compared to baseline assessment performance [ Time Frame: 20 weeks ]
Same as current
Complete list of historical versions of study NCT00998569 on Archive Site
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Neurocognitive Enhancement in Major Depressive Disorder
Neurocognitive Enhancement in Major Depressive Disorder
The purpose of this study is to examine the effects of neurocognitive enhancement on cognitive abilities and related social and adaptive behaviours in individuals diagnosed with major depressive disorder. Subjects in this study will be randomized to receive Neurocognitive Enhancement Therapy (NET) or to a wait list and then NET . Secondary aims include examining whether the cognitive benefits are potentiated by repeated exposure during in-home practice with complementary exercises. Additionally, the investigators will examine the durability of the effects and their generalization to functional capacity and everyday functional performance after completion of the groups.
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Not Applicable
Allocation: Randomized
Intervention Model: Crossover Assignment
Masking: Double (Participant, Outcomes Assessor)
Primary Purpose: Treatment
Major Depressive Disorder
  • Behavioral: Neurocognitive Enhancement
    Neurocognitive Enhancement Therapy (NET) uses behavioural treatment strategies that are designed to improve a range of cognitive skills. NET uses strategies such as coaching, repetition, practice, teaching, group discussion, and compensation for deficits by using cognitive strengths.
  • Behavioral: Wait List
    Participants will be wait listed for 10 weeks, following which time they will receive the intervention previously described.
  • Experimental: Neurocognitive Enhancement
    neurocongnitive enhancement
    Intervention: Behavioral: Neurocognitive Enhancement
  • Wait List
    no intervention
    Intervention: Behavioral: Wait List
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*   Includes publications given by the data provider as well as publications identified by Identifier (NCT Number) in Medline.
March 2012
March 2012   (Final data collection date for primary outcome measure)

Inclusion Criteria:

  1. Male or Female.
  2. Subjects will be between the ages of 18 and 65, which is the age range with available normative comparison data.

Exclusion Criteria:

  1. Presence of a medical diagnosis that is associated with known cognitive impairments, such as multiple sclerosis, cerebrovascular accident, dementia, or history of traumatic brain injury.
  2. Subjects with a reading level below grade 6, as assessed with the Wide Range Achievement Test - Reading Recognition Subtest, will be excluded because of the likelihood of not understanding task instructions.
  3. Subjects with uncorrectable vision or hearing impairment that would preclude valid assessments or intervention procedures.
Sexes Eligible for Study: All
18 Years to 65 Years   (Adult)
Contact information is only displayed when the study is recruiting subjects
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Christopher Bowie, Queen's University
Queen's University
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Principal Investigator: Christopher Bowie, PhD Queen's University
Queen's University
August 2015

ICMJE     Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP