Attentional bias modification for chocolate: Sham-n training as a new control group

Although attentional bias modification has been shown effective in several appetitive domains, results have been mixed. A major contributor seems to be the choice of control condition. The aim of the present study was to compare attentional bias modification for chocolate against a new control condition, sham-n (neutral or no-contingency) training. Using a modified dot probe protocol, participants (N = 192; 17–30 years) were randomly trained to attend to chocolate pictures, avoid chocolate pictures, or received sham-n training. In the attend and avoid conditions, stimulus pairs consisted of one chocolate and one non-chocolate picture, and probes replaced most often (90/10) chocolate or non-chocolate pictures, respectively. In the sham-n training condition, stimulus pairs consisted of two chocolate or two non-chocolate pictures, and probes replaced pictures within pairs with equal frequency (50/50). Attentional bias for chocolate increased following attend training, decreased following avoidance training, and did not change following sham-n training. The findings clearly demonstrate that both attend and avoidance training alter (in opposite direction) attentional bias for chocolate, whereas sham-n training is inert. This makes sham-n training particularly promising for use in clinical samples who tend to show strong initial biases.

Engagement with angry faces during attentional bias modification: Insights from the N2pc

<p>Healthy individuals show an attentional bias toward threat, and this bias is exaggerated in anxious individuals. Recent studies have shown that training anxious individuals to attend to neutral information can reduce their threat bias and anxiety levels. This training is called attentional bias modification (ABM). However, despite the large literature on ABM, it is still unclear how ABM achieves its effects. Two mechanisms – facilitated engagement with threat, and delayed disengagement from threat – are thought to be involved in the threat bias. In this thesis, I investigated the effects of ABM on engagement with angry faces. First, in Experiment 1 I developed an ABM task to train healthy individuals to attend to either angry or neutral faces. Participants completed a dot-probe task in which they saw two faces – one angry and one neutral – followed by a target that appeared more often in the location of either the angry or neutral face (depending on their respective training condition). Experiment 1 was successful at inducing a bias. Next, Experiment 2 used this task to investigate the effects of ABM on event-related potentials before, during, and after training. The N2pc component, which provides a measure of attentional engagement, was used to investigate changes in engagement with angry and neutral faces as a function of training. Consistent with previous studies, there was an overall N2pc for the angry face, indicating that participants were engaging their attention with the angry face. However, the N2pc was not affected by training, even though participants were moving their eyes in the training-congruent direction during training, indicating sensitivity to the training contingency. These results suggest that ABM does not affect attentional engagement with threat stimuli. Rather, it is likely that an improved ability to disengage attention from threat stimuli underlies ABM’s training effects.</p>

Engagement with angry faces during attentional bias modification: Insights from the N2pc

<p>Healthy individuals show an attentional bias toward threat, and this bias is exaggerated in anxious individuals. Recent studies have shown that training anxious individuals to attend to neutral information can reduce their threat bias and anxiety levels. This training is called attentional bias modification (ABM). However, despite the large literature on ABM, it is still unclear how ABM achieves its effects. Two mechanisms – facilitated engagement with threat, and delayed disengagement from threat – are thought to be involved in the threat bias. In this thesis, I investigated the effects of ABM on engagement with angry faces. First, in Experiment 1 I developed an ABM task to train healthy individuals to attend to either angry or neutral faces. Participants completed a dot-probe task in which they saw two faces – one angry and one neutral – followed by a target that appeared more often in the location of either the angry or neutral face (depending on their respective training condition). Experiment 1 was successful at inducing a bias. Next, Experiment 2 used this task to investigate the effects of ABM on event-related potentials before, during, and after training. The N2pc component, which provides a measure of attentional engagement, was used to investigate changes in engagement with angry and neutral faces as a function of training. Consistent with previous studies, there was an overall N2pc for the angry face, indicating that participants were engaging their attention with the angry face. However, the N2pc was not affected by training, even though participants were moving their eyes in the training-congruent direction during training, indicating sensitivity to the training contingency. These results suggest that ABM does not affect attentional engagement with threat stimuli. Rather, it is likely that an improved ability to disengage attention from threat stimuli underlies ABM’s training effects.</p>

Attentional Bias Modification Training for Itch: A Proof-of-Principle Study in Healthy Individuals

Itch draws our attention to allow imposing action against bodily harm (e.g., remove insects). At the same time, itch is found to interfere with ongoing tasks and daily life goals. Despite the key role of attention in itch processing, interventions that train individuals to automatically disengage attention from itch cues are lacking. The present proof-of-principle attention bias modification (ABM) training study was aimed at investigating whether attention to itch as well as sensitivity to mild itch can be changed. Healthy volunteers were randomized over three ABM-training conditions. Training was done via a modified pictorial dot-probe task. In particular, participants were trained to look away from itch stimuli (n = 38), toward itch stimuli (n = 40) or not trained toward or away from itch at all (sham training, n = 38). The effects of the ABM-training were tested primarily on attention to itch pictures. Secondarily, it was investigated whether training effects generalized to alterations in attention to itch words and mechanical itch sensitivity. The ABM-training did not alter attention toward the itch pictures, and there was no moderation by baseline levels of attention bias for itch. Also, attention bias to the itch words and itch sensitivity were not affected by the ABM-training. This study was a first step toward trainings to change attention toward itch. Further research is warranted to optimize ABM-training methodology, for example increasing motivation of participants. Eventually, an optimized training could be used in patient populations who suffer most from distraction by their symptoms of itch.Clinical Trial Registration: Identifier: NL6134 (NTR6273). The website URL is: https://www.trialregister.nl/

Effectiveness of attentional bias modification training as add-on to regular treatment in alcohol and cannabis use disorder: A multicenter randomized control trial

Background Attentional bias for substance-relevant cues has been found to contribute to the persistence of addiction. Attentional bias modification (ABM) interventions might, therefore, increase positive treatment outcome and reduce relapse rates. The current study investigated the effectiveness of a newly developed home-delivered, multi-session, internet-based ABM intervention, the Bouncing Image Training Task (BITT), as an add-on to treatment as usual (TAU). Methods Participants (N = 169), diagnosed with alcohol or cannabis use disorder, were randomly assigned to one of two conditions: the experimental ABM group (50%; TAU+ABM); or the control group (50%; split in two subgroups the TAU+placebo group and TAU-only group, 25% each). Participants completed baseline, post-test, and 6 and 12 months follow-up measures of substance use and craving allowing to assess long-term treatment success and relapse rates. In addition, attentional bias (both engagement and disengagement), as well as secondary physical and psychological complaints (depression, anxiety, and stress) were assessed. Results No significant differences were found between conditions with regard to substance use, craving, relapse rates, attentional bias, or physical and psychological complaints. Conclusions The findings may reflect unsuccessful modification of attentional bias, the BITT not targeting the relevant process (engagement vs. disengagement bias), or may relate to the diverse treatment goals of the current sample (i.e., moderation or abstinence). The current findings provide no support for the efficacy of this ABM approach as an add-on to TAU in alcohol or cannabis use disorder. Future studies need to delineate the role of engagement and disengagement bias in the persistence of addiction, and the role of treatment goal in the effectiveness of ABM interventions.

Effects of Online Attentional Bias Modification on Coronavirus Anxiety

Objective: The negative impacts of the Coronavirus Disease 2019 (COVID-19)outbreak on public mental health are enhancing the number of individuals requiring psychotherapy. Besides, anxiety is becoming more frequent than any other mental health issue among individuals. Similar to other anxiety types, coronavirus anxiety is associated with elevated attentional bias. The present study aimed to examine the effects of Attentional Bias Modification (ABM) on attentional bias towards coronavirus-related stimuli, and coronavirus anxiety. Methods: This was a quasi-experimental study with pretest-posttest-follow-up and a control group design. The research participants were 37 adults (aged 18 to 38 y), who were randomly assigned to the experimental (n=18) and control (n=19) groups. The experimental group received ABM, while no intervention was delivered to the controls. Attentional bias and coronavirus disease anxiety were assessed at pretest, posttest, and 2 months follow-up stages using the Dot-Probe Task (DPT) and the Corona Disease Anxiety Scale (CDAS). The collected data were analyzed using two-way repeated-measures Analysis of Variance (ANOVA) and Fisher’s least significant difference in SPSS v. 26. Results: After receiving online ABM, the study participant’s coronavirus-related attentional bias decreased, leading to a significant reduction in coronavirus anxiety (P<0.05). These significant changes were evident at the posttest and maintained until the follow-up step. However, no significant changes occurred in the control group (P>0.05). Conclusion: The presented ABM could decrease coronavirus anxiety; thus, its online implementation is a suitable approach to treat individuals with this anxiety while observing social distancing.

Does a Single Session of Training Modify Emotion-Induced Blindness?

Emotion-Induced Blindness (EIB) is a robust phenomenon in which people fail to see targets that appear in spatiotemporal proximity to task-irrelevant emotional distractors. Evidence suggests that it involves different mechanisms than tasks widely used to assess attentional biases and their modification. To assess the utility of EIB as an attentional bias modification task, we investigated its malleability in two experiments. In Experiment 1, participants trained to ignore negative distractors, ignore neutral distractors, or simply received equivalent exposure to negative distractors over 720 trials. Analyses revealed strong evidence against effects of training condition. Experiment 2 investigated whether training effects might emerge with EIB was tested at a longer distractor-target interval and added an additional, no-distractor comparison condition. Analyses of Experiment 2 provided some evidence that exposure to negative stimuli may reduce the impact of novel negative stimuli, which may hold implications for the wider attentional literature.