Look at Food and Lose Your Fear - Evaluation of a Computerized Attention Training (CAT) for Anorexia Nervosa Patients

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

UNKNOWN

Clinical Phase

PHASE1

Total Enrollment

50 participants

Study Classification

INTERVENTIONAL

Study Start Date

2015-06-30

Study Completion Date

2016-11-30

Brief Summary

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The purpose of this study is to test the therapeutic effects of a computerized attention training for patients with Anorexia Nervosa (AN). The primary aim is to determine if a computerized attention training can modify attention towards food and ameliorate eating disorder symptoms and related difficulties, such as anxiety. The secondary aim is to explore underlying mechanisms that contribute to these improvements. The stability of potentially observed effects over a one-month period will also be determined.

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Detailed Description

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Recently, attention bias modification (ABM) has successfully been applied in the field of anxiety disorders and emerging evidence suggests that attention bias modification can ameliorate attention bias for threatening stimuli. ABM is based on the premise that if biased attention maintains disorder symptoms, a modification of the bias should reduce symptoms. The advantage of ABM is that it operates implicitly, thereby offering a more indirect, less deliberate procedure. This requires less cognitive control compared to the effortful and explicit psychotherapeutic treatment of cognitive biases. As food-related fears and avoidance in AN patients have been recognized as important anxiety-related symptoms, ABM seems particularly suitable to treat food-related fears and avoidance, especially because AN patients might be unaware of their avoidance strategy. The aim of this study is to test if food-related fears and food avoidance can be changed by experimentally modifying attention towards food in Anorexia Nervosa patients using an innovative computerized training paradigm (computerized attention training - CAT) and to evaluate related change in symptoms.

The investigators hypothesize that the active CAT will change attentional processing of food cues (research aim 1), transfer to changes in food-related fears and food avoidance, and to improvements in AN symptoms and weight in the short term (research aim 2) and longer term (research aim 3).

Conditions

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Anorexia Nervosa

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

SINGLE

Participants

Study Groups

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CAT active attention bias modification

Active computerized attention training (CAT). Attention training via repeated trials of a modified anti-saccade task with concurrent assessment of eye-movements intended to direct attention towards food stimuli using pictorial food and non-food stimuli (see Werthmann, Field, Roefs, Nederkoorn, \& Jansen, 2014).

Group Type EXPERIMENTAL

Computerized attention training (CAT)

Intervention Type BEHAVIORAL

Three sessions of active computerized attention training.

CAT sham bias modification

Sham computerized attention training. Attention training via repeated trials of a modified anti-saccade task with concurrent assessment of eye-movements not intended to change attention processing of food stimuli using pictures of two different non-food stimuli categories (e.g. household and musical instruments).

Group Type PLACEBO_COMPARATOR

Sham computerized attention training (control condition)

Intervention Type BEHAVIORAL

Three sessions of sham computerized attention training.

Interventions

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Computerized attention training (CAT)

Three sessions of active computerized attention training.

Intervention Type BEHAVIORAL

Sham computerized attention training (control condition)

Three sessions of sham computerized attention training.

Intervention Type BEHAVIORAL

Other Intervention Names

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Attention bias modification training

Eligibility Criteria

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Inclusion Criteria

* BMI \< 18.5 5 kg/m2
* Current diagnosis of AN-restricting type, AN-Binge/purging type or Eating Disorder Not Otherwise Specified (EDNOS) - Anorexia type
* Fluent in English

Exclusion Criteria

* Currently taking a dose of any psychoactive medication that has not been stable for at least 14 days prior to participation in the study
* Currently meeting the diagnostic criteria of another major psychiatric disorder (e.g., major depressive disorder, substance dependence, schizophrenia or bipolar disorder) needing treatment in its own right
* Learning and developmental impairments
* If the disorder is currently life threatening
* If patients are currently suicidal
* If patients are currently having extreme physiological complications or co-morbid alcohol and drug-abuse disorders

Minimum Eligible Age

18 Years

Eligible Sex

FEMALE

Accepts Healthy Volunteers

No