Cognitive accounts of depression and anxiety emphasize the importance of cognitive biases in the maintenance of disorders. One specific bias is the interpretation of ambiguous information. A negative interpretation bias is defined as a systematic tendency to interpret potentially ambiguous information in a negative rather than benign way and this bias has been associated with symptoms of depression. Research has led to the recent development of computerized cognitive bias modification (CBM) techniques to augment such biases and it has been suggested that CBM techniques may be useful as an adjunct to current treatments to enhance maintenance of treatment gains and minimize relapse rates. The fact that CBM procedures lend themselves to being delivered remotely, are cost-effective, and can be self-paced in ways that suit the patient make them an ideal candidate for inclusion in the Internet-based cognitive behavioural therapy (iCBT) programs currently offered through St. Vincent's Hospital and the University of New South Wales. Therefore, the primary aim of the current trial is to evaluate the acceptability and effectiveness of adding CBM procedures to the existing iCBT modules offered through St. Vincent's Hospital and the University of New South Wales. It is expected that iCBT + CBM will result in superior treatment outcomes as indexed by a standardized clinical battery.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
69
OxIGen is an Internet-based intervention taking place over 1 week followed by iCBT, an Internet-based treatment for depression taking place over 10 weeks.
Waitlist will receive iCBT at week 11
St. Vincent's Hospital
Darlinghurst, New South Wales, Australia
Change in score on the Beck Depression Inventory - second edition (BDI-II).
Time frame: Administered at baseline, post-intervention (1 week), and post treatment (iCBT; 11 weeks)
Change on the Scrambled Sentences Task (SST)- electronic version.
Time frame: Administered at baseline, post-intervention (1 week).
Change on Prospective Imagery Test (PIT).
Time frame: Administered at baseline, post-intervention (1 week).
Change on the Kessler-10 (K10).
Time frame: Administered at baseline, before each iCBT lesson, and post-treatment (week 11).
Change on WHO Disability Assessment Scale (WHO-DAS).
Time frame: Administered baseline and post-treatment (iCBT; 11 weeks).
Change on the Repetitive Thinking Questionnaire (RTQ).
Time frame: Administered at baseline, post intervention (week 1), and post-treatment (iCBT; 11 weeks).
Change on the State Trait Anxiety Inventory (STAI).
Time frame: Administered at baseline, post intervention (week 1), and post-treatment (iCBT; 11 weeks).
Change on the Ambiguous Sentence Task (AST).
Time frame: Administered at baseline and post-intervention (week 1).
Change in score on the Patient Health Questionnaire-9 (PHQ-9).
Time frame: Administered at baseline, post intervention (week 1), and post treatment (week 11).
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