Effects of Alcohol on Tests of Executive Functioning in Men and Women: A Dose Response Examination

Alcohol has been shown to affect performance on tasks associated with executive functioning. However, studies in this area have generally been limited to a single dose or gender or have used small sample sizes. The purpose of this study was to provide a more nuanced and systematic examination of alcohol\u27s effects on commonly used tests of executive functioning at multiple dosages in both men and women. Research volunteers (91 women and 94 men) were randomly assigned to one of four drink conditions (alcohol doses associated with target blood alcohol concentrations of .000%, .050%, .075%, and .100%). Participants then completed three tasks comprising two domains of executive functioning: two set shifting tasks, the Trail Making Test and a computerized version of the Wisconsin Card Sorting Task, and a response inhibition task, the Go Stop Impulsivity Paradigm. Impaired performance on set shifting tasks was found at the .100% and .075% dosages, but alcohol intoxication did not impair performance on the Go Stop. No gender effects emerged. Thus, alcohol negatively affects set shifting at moderately high levels of intoxication in both men and women, likely attributable to alcohol\u27s interference with prefrontal cortex function. Although it is well established that alcohol negatively affects response inhibition as measured by auditory stop-signal tasks, alcohol does not appear to exert a negative effect on response inhibition as measured by the Go Stop, a visual stop-signal task

Effect of alcohol dose on deliberate self-harm in men and women

Objective: Nonexperimental survey and field research support the notion that alcohol use may be associated with deliberate self-harm (DSH) across the spectrum of lethality, from nonsuicidal self-injury (NSSI) through suicide. Nonexperimental studies, however, provide limited information about potential causal relationships between alcohol consumption and DSH. Two previous experiments showed that a relatively high-dose of alcohol increases the likelihood of engaging in DSH in men, with DSH defined by the self-administration of a painful shock (the self-aggression paradigm [SAP]; Berman & Walley, 2003; McCloskey & Berman, 2003). In this study, we examined whether (a) lower doses of alcohol also elicit DSH, (b) this effect occurs for women as well as men, and (c) individual differences in past nonsuicidal self-injury (NSSI) moderate alcohol\u27s effects on DSH. Method: Nonalcohol dependent men and women (N = 210) were assigned either to.00%,.05%,.075%, or.100% blood alcohol concentration (BAC) drink conditions and completed a self-rating scale of NSSI (the Deliberate Self-Harm Inventory [DSHI]; Gratz, 2001). As in previous SAP studies, DSH was operationalized by shock setting behavior during a competitive reaction time (RT) game. Results: Overall, a greater proportion of participants in the.075% and.100% (but not.050%) alcohol conditions self-selected a painful shock to administer compared to participants in the placebo condition. NSSI predicted self-administration of painful shocks, but did not moderate the alcohol effect. Conclusions: Results provide experimental evidence to support the notion that interventions for self-harm should include processes to monitor and limit alcohol intake

MDMA and Impulsivity: A Review

The illicit drug 3,4-methylenedioxymethamphetamine (MDMA; Ecstasy) has been shown to cause long-term serotonin (5-HT) deficits in rodents and non-human primates, and based on the results of brain imaging studies in frequent Ecstasy users, it appears that MDMA has the potential to affect the human brain in much the same way. Because the 5-HT system is known to take part in the regulation of impulsivity, it has been hypothesized that increased impulsivity may be one of the consequences of MDMA exposure seen in Ecstasy users. The purpose of this review is to evaluate the evidence for a relationship between Ecstasy use, and higher levels of impulsivity. Cross-sectional studies that used measures of im- pulsivity to compare abstinent Ecstasy users to non-users will be summarized, and longitudinal studies that attempted to find changes in impulsivity in Ecstasy users will be examined. In closing, the overall evidence for an association between Ecstasy use and higher levels of impulsivity will be evaluated, and potential explanations for this association will be discussed. © 2008 Bentham Science Publishers Ltd

Social Anhedonia and Aggressive Behavior

The inability to derive pleasure from social relationships, or social anhedonia, is associated with both psychopathology and impaired social functioning. Much of the research on social anhedonia (SA) has focused on its role in psychosis proneness (or schizotypy), which is the predisposition toward psychosis. Recent research suggests that SA may be related to aggression, but it is unclear whether this association is explained by the overlap between SA and positive aspects of schizotypy, namely perceptual aberrations (PA) and magical ideation (MI). The purpose of this study was to determine if SA uniquely predicts aggression in a nonclinical sample using a multi-modal approach to assess aggression. One hundred twenty undergraduates (60 men and 60 women) completed the Chapman psychosis proneness scales and self-report and behavioral measures of aggression. Results suggest that PA and MI were correlated with self-reported history of aggression, but that SA uniquely predicted provoked aggressive behavior observed in the laboratory. SA was also found to predict aggressive behavior over and above the effects of gender, anger and hostility. The results suggest that SA, and possibly low positive affect more broadly, may be associated with an increased risk of aggression in response to provocation. © 2012

Anxiety sensitivity and negative urgency: a pathway to negative reinforcement-related smoking expectancies.

ObjectivesAnxiety sensitivity--fear of anxiety symptoms--may increase motivation to smoke by influencing the development of cognitive expectations regarding smoking's negative reinforcing effects; yet, the nature and mechanisms of this pathway are unclear. We hypothesized that relations between anxiety sensitivity and negative reinforcement-related smoking expectancies would be mediated by negative urgency, that is, a trait tendency to act impulsively during negative affect.MethodsIn a cross-sectional design, we administered self-report measures of anxiety sensitivity, negative urgency, and negative reinforcement-related smoking outcome and abstinence expectancies to 205 smokers (≥10 cigarettes/d, 34% female, M age = 44.4 years).ResultsAnxiety sensitivity was associated with stronger expectancies that smoking alleviates negative affect (β = 0.30; P < 0.0001) and smoking abstinence exacerbates aversive withdrawal symptoms (β = 0.24; P = 0.0004). Negative urgency partially mediated the relation between anxiety sensitivity and both types of negative reinforcement-related smoking expectancies (βs ≥ 0.057; Ps ≤ 0.007). Results remained significant after statistically controlling for anxiety and nicotine dependence symptoms.ConclusionsSmokers high in anxiety sensitivity tend to display negative urgency, which in turn is related to greater expectations of negative reinforcement consequences of smoking and smoking abstinence. Treatments that mitigate fear of anxiety symptoms and the tendency to act impulsively in response to negative affect (eg, interoceptive exposure, distress tolerance skills training, and mindfulness training) may be particularly useful in assisting with smoking cessation for high-anxiety sensitivity smokers

Anxiety sensitivity and negative urgency: a pathway to negative reinforcement-related smoking expectancies.

ObjectivesAnxiety sensitivity--fear of anxiety symptoms--may increase motivation to smoke by influencing the development of cognitive expectations regarding smoking's negative reinforcing effects; yet, the nature and mechanisms of this pathway are unclear. We hypothesized that relations between anxiety sensitivity and negative reinforcement-related smoking expectancies would be mediated by negative urgency, that is, a trait tendency to act impulsively during negative affect.MethodsIn a cross-sectional design, we administered self-report measures of anxiety sensitivity, negative urgency, and negative reinforcement-related smoking outcome and abstinence expectancies to 205 smokers (≥10 cigarettes/d, 34% female, M age = 44.4 years).ResultsAnxiety sensitivity was associated with stronger expectancies that smoking alleviates negative affect (β = 0.30; P < 0.0001) and smoking abstinence exacerbates aversive withdrawal symptoms (β = 0.24; P = 0.0004). Negative urgency partially mediated the relation between anxiety sensitivity and both types of negative reinforcement-related smoking expectancies (βs ≥ 0.057; Ps ≤ 0.007). Results remained significant after statistically controlling for anxiety and nicotine dependence symptoms.ConclusionsSmokers high in anxiety sensitivity tend to display negative urgency, which in turn is related to greater expectations of negative reinforcement consequences of smoking and smoking abstinence. Treatments that mitigate fear of anxiety symptoms and the tendency to act impulsively in response to negative affect (eg, interoceptive exposure, distress tolerance skills training, and mindfulness training) may be particularly useful in assisting with smoking cessation for high-anxiety sensitivity smokers

Depression and anxiety symptoms moderate the relation between negative reinforcement smoking outcome expectancies and nicotine dependence.

ObjectiveSmoking reinforcement expectancies-expectations that smoking modulates mood-can be powerful motivators to smoke, resulting in increased nicotine dependence. The impact of smoking reinforcement expectancies on nicotine dependence may be particularly strong in individuals with increased mood or anxiety symptoms because they may be more likely to act on expectancies with smoking behavior in order to offset their affective symptoms. This study examined levels of emotional symptom dimensions as moderators of the relation between positive and negative smoking reinforcement expectancies and nicotine dependence severity in a community sample.MethodIn a cross-sectional design, 317 daily cigarette smokers (215 men) completed self-report measures of smoking reinforcement expectancies, mood and anxiety symptoms, and nicotine dependence.ResultsIncreasing levels of negative affect and anxiety symptoms strengthened associations between negative reinforcement smoking expectancies and nicotine dependence severity (moderation effects; (βs > .13; ps < .03) but did not moderate relations between positive reinforcement expectancies and dependence. Anhedonia did not moderate relations involving either positive or negative reinforcement smoking expectancies.ConclusionsDistinct components of anxiety and depressive symptoms interact differently with smoking reinforcement expectancies. Emotional symptoms characterized by excesses in aversive (but not deficits in appetitive) functioning may amplify tendencies to compulsively act on negative reinforcement expectancies by smoking. Cessation treatments that target negative reinforcement expectancies may be particularly salient for emotionally distressed smokers

Depression and Anxiety Symptoms Moderate the Relation Between Negative Reinforcement Smoking Outcome Expectancies and Nicotine Dependence

OBJECTIVE: Smoking reinforcement expectancies—expectations that smoking modulates mood—can be powerful motivators to smoke, resulting in increased nicotine dependence. The impact of smoking reinforcement expectancies on nicotine dependence may be particularly strong in individuals with increased mood or anxiety symptoms because they may be more likely to act on expectancies with smoking behavior in order to offset their affective symptoms. This study examined levels of emotional symptom dimensions as moderators of the relation between positive and negative smoking reinforcement expectancies and nicotine dependence severity in a community sample. METHOD: In a cross-sectional design, 317 daily cigarette smokers (215 men) completed self-report measures of smoking reinforcement expectancies, mood and anxiety symptoms, and nicotine dependence. RESULTS: Increasing levels of negative affect and anxiety symptoms strengthened associations between negative reinforcement smoking expectancies and nicotine dependence severity (moderation effects; (βs > .13; ps < .03) but did not moderate relations between positive reinforcement expectancies and dependence. Anhedonia did not moderate relations involving either positive or negative reinforcement smoking expectancies. CONCLUSIONS: Distinct components of anxiety and depressive symptoms interact differently with smoking reinforcement expectancies. Emotional symptoms characterized by excesses in aversive (but not deficits in appetitive) functioning may amplify tendencies to compulsively act on negative reinforcement expectancies by smoking. Cessation treatments that target negative reinforcement expectancies may be particularly salient for emotionally distressed smokers