Witnesses stumbling down memory lane: The effects of alcohol intoxication,retention interval,and repeated interviewing

Intoxicated eyewitnesses are often discredited by investigators and in court, but few studies have examined how alcohol affects witnesses’ memory. The primary aim of the present study was to examine how intoxication (alcohol vs. control), retention interval (immediate vs. one week delay), and number of interviews (one vs. two interviews) affect witnesses’ memory. The participants (N?=?99) were randomly assigned to consume either orange juice or alcohol mixed with orange juice, and they all witnessed a filmed mock crime afterwards. The recall took place either (a) immediately and after a one week delay or (b) after a one week delay only. No main effect of alcohol was found on the quantity or quality of the witnesses’ statements. Both intoxicated and sober witnesses recalled more details, and were more accurate, during immediate compared to delayed recall. For witnesses interviewed twice, an average of 30% new details were provided in the second compared to the first interview, and these were highly accurate. In sum, contrary to what one can expect, intoxicated witnesses with a low to moderate blood alcohol concentration (below 0.10%) were reliable witnesses.     

Creativity on tap? Effects of alcohol intoxication on creative cognition

Anecdotal reports link alcohol intoxication to creativity, while cognitive research highlights the crucial role of cognitive control for creative thought. This study examined the effects of mild alcohol intoxication on creative cognition in a placebo-controlled design. Participants completed executive and creative cognition tasks before and after consuming either alcoholic beer (BAC of 0.03) or non-alcoholic beer (placebo). Alcohol impaired executive control, but improved performance in the Remote Associates Test, and did not affect divergent thinking ability. The findings indicate that certain aspects of creative cognition benefit from mild attenuations of cognitive control, and contribute to the growing evidence that higher cognitive control is not always associated with better cognitive performance.     

The Role of Mental Rigidity and Alcohol Consumption Interaction on Intimate Partner Violence: A Spanish Study

Intimate partner violence (IPV) has often been linked to alcohol consumption. Alcohol abuse affects cognitive processing through its effects on the prefrontal cortex, generating influence in mental rigidity (MR). This study analyzes the influence of MR as a predisposing factor to violence. The sample consisted of 136 men with a history of IPV. Participants with high MR had lower empathy and perception of the severity of IPV, and higher alcohol consumption and hostile sexism than participants with lower MR. These results should be considered in the development of prevention and intervention programs with the goal of increasing their effectiveness.     

Cognitive-behavioral therapy for insomnia in alcohol dependent patients: a randomized controlled pilot trial

In a randomized controlled trial, we evaluated the efficacy of cognitive-behavioral treatment for insomnia to improve sleep and daytime symptoms, and to reduce relapse in recovering alcohol dependent (AD) participants. Seventeen abstinent AD patients with insomnia (6 women, mean age 46.2 ± 10.1 years) were randomized to 8 sessions of cognitive-behavioral treatment for insomnia for AD (CBTI-AD, n = 9) or to a behavioral placebo treatment (BPT, n = 8). Subjective measures of sleep, daytime consequences of insomnia and AD, alcohol use, and treatment fidelity were collected at baseline and post-treatment. Diary-rated sleep efficiency and wake after sleep onset, and daytime ratings of General Fatigue on the Multidimensional Fatigue Inventory improved more in the CBTI-AD compared to the BPT group. In addition, more subjects were classified as treatment responders following CBTI-AD. No group differences were found in the number of participants who relapsed to any drinking or who relapsed to heavy drinking. The findings suggest that cognitive-behavioral insomnia therapy benefits subjective sleep and daytime symptoms in recovering AD participants with insomnia more than placebo. The benefits of treating insomnia on drinking outcomes are less apparent.     

Cognitive model decomposition of the BART: Assessment and application

The Balloon Analogue Risk Task, or BART, aims to measure risk taking behavior in a controlled setting. In order to quantify the processes that underlie performance on the BART, Wallsten, Pleskac, and Lejuez (2005) proposed a series of mathematical models whose parameters have a clear psychological interpretation. Here we examine a 2-parameter simplification of Wallsten et al.’s preferred 4-parameter model. A parameter recovery study shows that — with plausible restrictions on the number of participants and trials — both parameters (i.e., risk taking γ⁺ and response consistency β) can be estimated accurately. To demonstrate how the 2-parameter model can be used in practice, we implemented a Bayesian hierarchical version and applied it to an empirical data set in which participants performed the BART following various amounts of alcohol intake.     

Controlling anger in self-reported sober and alcohol intoxicated states: moderating effects of trait anger and alcohol consumption

Controlling anger in self-reported sober and alcohol intoxicated states: Moderating effects of trait anger and alcohol consumption. Scandinavian Journal of Psychology 52, 382-388. Retrospective self-reports about prior sober and alcohol intoxicated states were explored to reveal moderating effects of trait anger and alcohol consumption on anger control. The analyses were based on self-reports of trait anger and alcohol consumption as well as self-reports of the participants' typical levels of anger control in sober and alcohol intoxicated states in a population based sample of Finnish twins and their siblings (N = 4,852). The reported levels of anger control were lower regarding prior alcohol intoxicated states than sober states. A three-way interaction between alcohol consumption, trait anger and anger control was found. Whereas no interaction between alcohol consumption and trait anger was found in the self-reported sober state, there was an interactive effect of trait anger and alcohol consumption on anger control in the intoxicated state, indicating that the difference in anger control between those with high levels of alcohol consumption and those with low levels, was greater at higher levels of trait anger. Women had lower levels of anger control than men, but the relationship between trait anger, alcohol consumption and anger control was similar for both genders. In conclusion, the results showed that those with high levels of trait anger and alcohol consumption showed the lowest levels of anger control in self-reported alcohol intoxicated states, and indicate the importance of separating between anger control when sober and intoxicated since anger control seems to be differently related to at least trait anger and alcohol consumption in these states.     

Decisional styles and risk of problem drinking or gambling

Addictive behaviours indicate a deficit in self regulation, with a general predisposition towards addiction implied by comorbid addictive behaviours. To determine whether common or differing decisional styles were associated with alcohol and gambling problems university students (n = 462) completed online the Melbourne Decision Making Questionnaire, Alcohol Use Disorders Identification Test, and the South Oaks Gambling Screen to assess their alcohol use, and gambling patterns. There was some comorbidity between those at risk for alcohol and gambling-related problems, with both groups frequenting more gaming venues, however, participants at risk for alcohol related problems differed in their decisional styles from those at risk for gambling problems. A greater risk of alcohol related problems was linked to lower vigilance scores and increased tendencies towards procrastination. A higher risk of gambling problems was associated with lower decisional self-esteem and an increased proneness to hypervigilance or panic. Therefore, while a predisposition towards addiction manifests as a preference for addictive behaviour, it is associated with different decisional styles. Problem drinkers are more likely to have an avoidant decisional style, while problem gamblers are not confident in their ability to make decisions, and their decisions feel pressured.     

Urgency and negative emotions: Evidence for moderation on negative alcohol consequences

Prior research had shown that impulsivity may enhance the impact of negative emotions on alcohol related problems. However, these studies used broad measures of both negative emotions and impulsivity that may have obscured the effects of more specific constructs of impulsivity or negative emotions. One such construct is urgency, which is defined as the tendency to act impulsively in the face of strong positive emotions (positive urgency) or negative emotions (negative urgency). The present study tested whether urgency moderated the association between separate negative emotions (anger, depression and anxiety) and alcohol related problems. Data were obtained from a large online sample of currently drinking college students attending a large Northwestern university (n = 442). Findings indicated that alcohol related problems were directly associated with anger and both urgency facets. Additionally, positive urgency, but not negative urgency, enhanced the effects of depression, while the buffering effects of positive urgency on the anxiety-consequences association approached significance. These results suggest the importance of emotional context in understanding how dispositions towards rash action may lead to problematic alcohol use.     

Prejudice in the pub: How alcohol and ideology loosen the tongue

This study (N = 124) tested the main and interactive effects of alcohol consumption, egalitarianism, and right-wing authoritarianism (RWA) in relation to prejudice suppression in the natural environment of a British Public House (pub). Employing a quasi-experimental between-subjects design, participants who had consumed alcohol were worse at suppressing their prejudice than participants with no alcohol consumption. Further, the more participants endorsed egalitarian values, the more they were able to suppress their prejudice. This tendency was resistant to the effects of alcohol. By contrast, the stronger participants held RWA beliefs, the less they were able to suppress their prejudice. In addition, this tendency was accentuated by alcohol consumption. Results are discussed in terms of theoretical and practical implications.