A Single-Session Combined Cognitive Bias Modification Training Targeting Attention and Interpretation Biases in Aggression

Experimental studies applying cognitive bias modification of attention (CBM-A) and interpretation (CBM-I) to reduce aggression have examined the effect of modifying each cognitive bias in isolation. In order to maximise the potential impact on both biases and symptom reduction, we examined whether a combined bias training procedure targeting both attention and interpretation biases (CBM-AI) in combination would be more effective than targeting interpretation bias (CBM-I) alone. University students (17-35 years) were randomly assigned to either a single session of CBM-AI training (n = 40), CBM-I training (n = 40), or a control condition (n = 40). Contrary to our expectations, participants showed an increase in adaptive attention and pro-social interpretation bias in all training conditions. Additionally, in none of the conditions, we found a significant change on self-reported or behavioural aggression. These findings suggest: (1) that the combined training did not have added effect over single interpretation bias training, (2) that training interpretation bias may lead to changes in attention bias, (3) that elements of the control condition unexpectedly, but interestingly, also affected attention and interpretation biases, and (4) single-session CBM procedures do not produce robust effects on self-report or behavioural measures of aggression in unselected samples

Enhanced response inhibition and reduced midfrontal theta activity in experienced Vipassana meditators

Response inhibition - the ability to suppress inappropriate thoughts and actions - is a fundamental aspect of cognitive control. Recent research suggests that mental training by meditation may improve cognitive control. Yet, it is still unclear if and how, at the neural level, long-term meditation practice may affect (emotional) response inhibition. The present study aimed to address this outstanding question, and used an emotional Go/Nogo task and electroencephalography (EEG) to examine possible differences in behavioral and electrophysiological indices of response inhibition between Vipassana meditators and an experience-matched active control group (athletes). Behaviorally, meditators made significantly less errors than controls on the emotional Go/Nogo task, independent of the emotional context, while being equally fast. This improvement in response inhibition at the behavioral level was accompanied by a decrease in midfrontal theta activity in Nogo vs. Go trials in the meditators compared to controls. Yet, no changes in ERP indices of response inhibition, as indexed by the amplitude of the N2 and P3 components, were observed. Finally, the meditators subjectively evaluated the emotional pictures lower in valence and arousal. Collectively, these results suggest that meditation may improve response inhibition and control over emotional reactivity

Cued to act on impulse: more impulsive choice and risky decision making by women susceptible to overeating after exposure to food stimuli

There is increasing evidence that individual differences in tendency to overeat relate to impulsivity, possibly by increasing reactivity to food-related cues in the environment. This study tested whether acute exposure to food cues enhanced impulsive and risky responses in women classified on tendency to overeat, indexed by scores on the three factor eating questionnaire disinhibition (TFEQ-D), restraint (TFEQ-R) and hunger scales. Ninety six healthy women completed two measures of impulsive responding (delayed discounting, DDT and a Go No-Go, GNG, task) and a measure of risky decision making (the balloon analogue risk task, BART) as well as questionnairemeasures of impulsive behaviour either after looking at a series of pictures of food or visually matched controls. Impulsivity (DDT) and risk-taking (BART) were both positively associated with TFEQ-D scores, but in both cases this effect was exacerbated by prior exposure to food cues. No effects of restraint were found. TFEQ-D scores were also related tomore commission errors on the GNG, while restrained women were slower on the GNG, but neither effect was modified by cue exposure. Overall these data suggest that exposure to food cues act to enhance general impulsive responding in women at risk of overeating and tentatively suggest an important interaction between tendency for impulsive decision making and food cues thatmay help explain a key underlying risk factor for overeating

Individual differences in reward sensitivity are related to food craving and relative body weight in healthy women

According to the theory of J.A. Gray, a strongly reactive approach system is highly sensitive to reward or to cues that signal reward. This implies that intake driven by the rewarding properties of food should be affected by individual differences in reactivity of the approach system. The present study examined whether reward sensitivity is associated with food craving and relative body weight in a sample of female college students. Participants completed the Sensitivity to Punishment and Sensitivity to Reward Questionnaire and the trait version of the Food Craving Questionnaire and also reported their weight and height in order to compute Body Mass Index (BMI). Sensitivity to reward was significantly related to food craving and BMI. Furthermore, the correlation between reward sensitivity and BMI was not attenuated when the influence of food craving was partialled out, indicating that the relation between sensitivity to reward and BMI was not mediated by food craving. This is the first study demonstrating a relation between the personality trait of sensitivity to reward and BMI. These findings are discussed in the context of the involvement of dopaminergic reward circuitry in overeating

Sex work and substance use disorder:the role of personality and trauma

Objective: Substance use disorders (SUDs) and sex work often co-occur. Possibly, this relationship can be understood by studying personality dimensions and psychological traumas. The aim of this research is to study the role of personality and traumas in sex work and co-occurring SUD. Method: In the present study, focusing on females, drugs use disorder patients not active as sex workers (DUD+/SW−), sex workers not suffering from drug use disorders (DUD−/SW+), sex workers with a drug use disorder (DUD+/SW+) and controls (DUD−/SW−) were compared regarding the personality dimensions Novelty Seeking, Harm Avoidance, and the psychological trauma variable “total level of experienced trauma,” and several specific trauma variables. Results: Although Harm Avoidance turned out to be related to DUD, neither Novelty Seeking nor Harm Avoidance could explain the co-occurrence of DUD and sex work. Experienced trauma was more straightforwardly associated with both DUD and sex work. Both DUD and sex work were associated with trauma, with the DUD+/SW+ group showing the highest levels of experienced trauma. Conclusions: Trauma plays an important role in not only DUD and sex work separately, but also in the co-occurrence of DUD and sex work.</p

Are behavioral and electrophysiological measures of impulsivity useful for predicting entrepreneurship?

We examine the association between several behavioral and electrophysiological indices of impulsivity-related constructs and multiple entrepreneurial constructs. Specifically, we investigate if these behavioral and electrophysiological measures are more useful as predictors of entrepreneurship than self-reported measures of impulsivity. Our findings are based on two datasets (n = 133 and n = 142) and indicate that behavioral and electrophysiological impulsivity measures are not robustly associated with entrepreneurship constructs, in contrast to self-reported measures of impulsivity. Though disappointing at first, our findings pave the way for future research on the relevance of behavioral and electrophysiological measures for entrepreneurship

Event-related potential (ERP) measures of error processing as biomarkers of externalizing disorders: A narrative review

Previous studies have shown that electrophysiological measures of error processing are affected in patients at risk or diagnosed with internalizing disorders, hence, suggesting that error processing could be a suitable biomarker for internalizing disorders. In this narrative review, we will evaluate studies that address the role of event-related potential (ERP) measures of error-processing in externalizing disorders and discuss to what extend these can be considered a biomarker for externalizing disorders. Currently, there is evidence for the notion that electrophysiological indices of error processing such as the error-related negativity (ERN) and error positivity (Pe) are reduced in individuals with substance use disorders, attention-deficit/hyperactivity disorder, and in forensic populations. However, it remains unclear whether this is also the case for other understudied disorders such as behavioral addiction. Furthermore, to fully understand how these deficits affect day to day behavior, we encourage research to focus on testing current theories and hypotheses of ERN and Pe. In addition, we argue that within an externalizing disorder, individual differences in error processing deficits may be related to prognosis and gender of the patient, methodological issues and presence of comorbidity. Next, we review studies that have related treatment trajectories with ERP measures of error processing, and we discuss the prospect of improving error processing as a treatment option. We conclude that ERP measures of error processing are candidate biomarkers for externalizing disorders, albeit we strongly urge researchers to continue looking into the predictive value of these measures in the etiology and treatment outcome through multi-method and longitudinal designs

Gaze-contingent Attention Bias Modification Training and its Effect on Attention, Interpretations, Mood, and Aggressive Behavior

Cognitive theories propose that aggression is associated with specific patterns of attention to social cues, and suggest that cognitive biases in attention and interpretation are interrelated, The current study tested whether these attention patterns can be altered using a single session of a novel gaze-contingent cognitive bias modification paradigm (CBM-A) and assessed the impact of this on interpretation bias, aggressive behavior and mood. University students (18–31 years) were randomly assigned to either a single session of positive training (n = 40) aimed at increasing attention to pro-social cues, or negative training (n = 40) aimed at increasing attention to negative cues. Results showed that the positive training indeed resulted in an increase in pro-social attention bias, while the negative training seemed not to have an effect on attention to negative cues. Both groups did not differ on their interpretations, mood levels, self-reported aggression and behavioral aggression. Findings suggest that this novel gaze-contingent CBM-A paradigm can indeed alter biased gaze processes, but may not impact interpretations, aggression and mood. The current study was conducted in a non-clinical sample, further research with a clinical aggressive sample, such as forensic patients is necessary to further explore these issues

A single-session combined cognitive bias modification training targeting attention and interpretation biases in aggression

Experimental studies applying cognitive bias modification of attention (CBM-A) and interpretation (CBM-I) to reduce aggression have examined the effect of modifying each cognitive bias in isolation. In order to maximise the potential impact on both biases and symptom reduction, we examined whether a combined bias training procedure targeting both attention and interpretation biases (CBM-AI) in combination would be more effective than targeting interpretation bias (CBM-I) alone. University students (17-35 years) were randomly assigned to either a single session of CBM-AI training (n = 40), CBM-I training (n = 40), or a control condition (n = 40). Contrary to our expectations, participants showed an increase in adaptive attention and pro-social interpretation bias in all training conditions. Additionally, in none of the conditions, we found a significant change on self-reported or behavioural aggression. These findings suggest: (1) that the combined training did not have added effect over single interpretation bias training, (2) that training interpretation bias may lead to changes in attention bias, (3) that elements of the control condition unexpectedly, but interestingly, also affected attention and interpretation biases, and (4) single-session CBM procedures do not produce robust effects on self-report or behavioural measures of aggression in unselected samples