Augmenting Effects of Attention Bias Modification Treatment on Cognitive Behavioral Therapy in Anxious Children: A Randomized Clinical Trial

The development of easily disseminated and efficacious treatment of psychiatric disorder is an important goal for translational neuroscience research. To that end, Attention Bias Modification Treatment (ABMT), a novel intervention targeting threat-related attention biases, has been shown to reduce anxiety in adults. To date, only one RCT study examined whether ABMT reduces clinical anxiety in children {Eldar, 2012 #32}, and no study has examined whether ABMT augments the efficacy of Cognitive Behavioral Treatment (CBT), the treatment of choice for anxiety disorders. Studying this question in youth is particularly important given that the onset of most anxiety disorders is during childhood, and early interventions may reduce long-term affliction. The current study is the first randomized control trial designed to examine the augmenting effects of ABMT on CBT among clinically anxious youth.

The purpose of Attention Bias Modification Therapy (ABMT) is to implicitly shape anxiety-related biases in attention orienting. ABMT uses the dot-probe task as a therapeutic tool. During training, the target location is systematically manipulated to increase the proportion of targets appearing at the location opposite the patient's bias. For example, in a training protocol intended to reduce threat bias, targets would appear more frequently at locations of neutral than threat stimuli.

Although CBT is an effective treatment for anxiety disorders, combining it with other treatment such as ABMT could result in additional treatment effects. CBT and ABMT are two interventions targeting different aspects of anxiety and therefore could potentially complement one another. While CBT modifies explicit and voluntary attention through verbal intervention, ABMT alters implicit and involuntary attentional biases. If ABMT augments CBT, the integration of the two treatments can have few significant benefits: First, it will combine the explicit learning of CBT with the implicit learning of ABMT and by that reduce the number of patients who respond poorly to CBT or do not respond at all. Second, computer-based training of attention may be more acceptable than traditional in-person therapy formats for some children and adolescents and can raise the cooperation in therapy. Finally, the CBT setting and the therapist presence can help to insure that ABMT is delivered consistently

The current study was designed to examine the ABMT augmentation effects on CBT for children with anxiety disorders. This study is the first randomized control trial in clinically anxious youth. Participants were randomly assigned to one of three conditions: 1. Training condition (CBT+ABMT), 2. Placebo condition (CBT+ ABMT-Placebo) 3. Control condition (CBT alone). We hypothesize that participants in the training condition will show the greatest improvement in anxiety symptoms.