How elevated blood alcohol concentration level and identification format affect eyewitness memory: A field study

Research shows that alcohol has a small and inconsistent effect on eyewitness recall and no effect on witnesses' lineup decisions. Much of this literature has tested participants with low‐to‐moderate blood alcohol concentration (BAC) levels, and no study has directly examined how identification procedure impacts intoxicated witnesses' decisions. In the present study, bar patrons' (N = 132) BAC levels were recorded before participating in a task. Midway through the task, they were interrupted by an intruder. Participants then recalled the incident via a staged interview and attempted to identify the intruder from a target‐present or target‐absent showup or lineup. Although elevated BAC levels (high as 0.24%) reduced the quantity and quality of information provided, BAC had no effect on witnesses' identification decisions regardless of format. Results highlight the importance of testing witness memory across a broad BAC spectrum and provide evidence that alcohol does not affect witnesses' identification ability.     

Two field studies on the effects of alcohol on eyewitness identification,confidence, and decision times

In two field studies, bar tenants (Ns = 86 and 190, respectively) were successively approached by confederates C1 and C2 on a night out. Confederate C3 then presented participants with a six‐person target‐absent or target‐present lineup concerning C1 or C2 (immediate test). Several days later, participants viewed a lineup regarding the confederate they had not attempted to identify earlier (C1/C2; delayed test). An immediate compared with a delayed, sober identification test did not increase the risk of a false identification decision. A blood alcohol concentration of 0.06–0.07% best discriminated accurate from inaccurate decisions. Choosers with a blood alcohol concentration ≤ 0.06% showed excellent calibration and little overconfidence, and their confidence was a strong indicator of accuracy (i.e., good resolution). Choosers with a higher intoxication level displayed poor calibration and strong overconfidence. Nonchoosers were generally poorly calibrated. Combined analyses showed a negative effect of intoxication on one's ability to discriminate the target from nontargets.     

Effects of alcohol intoxication and aggressivity on aggressive verbalizations during anger arousal

We examined the moderating effect of dispositional aggressivity on the relationship between alcohol intoxication and aggressive verbalizations. Using a laboratory anger-induction task that simulated an interpersonal conflict as a method to assess aggressive verbalizations (the articulated thoughts in simulated situations paradigm), 70 participants (33 women, 37 men) consumed either an alcoholic or a placebo beverage, and then imagined a series of audiorecorded interpersonal scenarios. Two blind-to-condition raters assessed the frequency of participants' aggressive verbalizations (insults, aggressive threats, belligerent provocations) articulated during anger arousal. Aggressivity was assessed using a standard measure of dispositional aggression. Results supported the aggressivity moderation hypothesis: intoxicated participants high in aggressivity responded with significantly more aggressive verbalizations relative to low-aggressivity participants regardless of beverage condition, and three times more aggressive verbalizations relative to the high-aggressivity/placebo group. There were no gender effects. These data support the hypothesis that alcohol potentiates aggression primarily among individuals at dispositional risk for engaging in such a behavior. Aggr. Behav. 34:428-436, 2008. (c) 2008 Wiley-Liss, Inc.     

Genetic effects on male sexual coercion

The genetic and environmental influences on sexual coercion, and to what extent its associations with alcohol use and psychopathy depend on shared genetic and environmental effects, were explored in a Finnish population-based sample of 938 men, aged 33-43 years, using the classical twin study design. All three phenotypes were associated positively and affected by genes (sexual coercion 28%, alcohol use 60%, psychopathy 54%), with 46% of the correlation between sexual coercion and psychopathy, 89% of the correlation between alcohol use and psychopathy and 100% of the correlation between sexual coercion and alcohol use being explained by shared genetic effects. Further, the results showed that a proportion of the variance in sexual coercion was derived from a highly genetic source that was common with alcohol use and psychopathy. This latent factor was hypothesized to reflect a general tendency for antisocial behavior that is pervasive across different situations. Relevant theories on sexual coercion were discussed in light of the results.     

青少年的气质与烟酒使用:交互效应检验

考察气质(意志控制、愤怒挫折、感觉寻求)对青少年烟酒使用的主效应,气质与教养方式(权威、专制、纵容)对烟酒使用的交互效应以及气质间的交互效应.采用随机整群抽样的方法,选取660名青少年为被试,匿名完成气质问卷、教养方式问卷和烟酒使用问卷.结果显示:(1)在控制了性别、年龄、社会经济地位后,气质对青少年烟酒使用具有预测作用,低意志控制、高愤怒挫折、高感觉寻求正向预测烟酒使用;(2)教养方式调节部分气质因素与烟酒使用的关系,具体为:权威和专制教养缓冲感觉寻求的风险作用,符合风险缓冲模型;纵容教养增强感觉寻求的风险作用,符合风险增强模型;(3)气质内部在影响青少年烟酒使用时也存在交互作用,愤怒挫折增强感觉寻求的风险作用,符合风险增强模型.因此,烟酒使用是气质与教养方式及气质间交互作用的产物.     

Initial Reliability and Validity of the Life Satisfaction Scale for Problem Youth in a Sample of Drug Abusing and Conduct Disordered Youth

Responses to Life Satisfaction Scale for Problem Youth (LSSPY) items were examined in a sample of 193 substance abusing and conduct disordered adolescents. In responding to the LSSPY, youth endorse their percentage of happiness (0 to 100%) in twelve domains (i.e., friendships, family, school, employment/work, fun activities, appearance, sex life/dating, use of drugs, use of alcohol, money/material possessions, transportation, control of one's life). Results indicated that the LSSPY yielded three factor structures (i.e., Social Satisfaction, External Obligations Satisfaction, Substance Use Satisfaction), demonstrated good initial psychometric properties, and appears to be a useful instrument in the evaluation of treatment outcome in problem youth. Males were more satisfied in the Social and External Obligations domains than females, although no gender differences were indicated in Substance Use Satisfaction. Caucasian, African-American, and Hispanic youths responded to LSSPY items similarly. Future directions are discussed in light of these results.     

初中生饮酒期望及其与饮酒行为关系的研究

本研究通过对 1 73 4名初中生的问卷测查 ,考察了当前初中生饮酒期望的性别和年级差异 ,并进一步探讨了饮酒期望与饮酒行为之间的关系。结果表明 :( 1 )初中男生的饮酒积极期望和女生相比没有明显差异 ,但饮酒的消极期望显著低于女生 ;( 2 )随着年级的升高 ,初中生的饮酒积极期望和消极期望都呈降低的趋势 ;( 3 )性别、年级、饮酒积极期望和饮酒消极期望对于饮酒行为都有显著的作用 ,饮酒消极期望对于饮酒行为的解释率要高于饮酒积极期望 ;( 4)饮酒消极期望对于饮酒积极期望和饮酒行为的关系有重要的调节作用。     

Studies on antiviolent and “normal” communities

Limited preliminary studies have provided identification of several communities in the Valley of Oaxaca, Mexico, that successfully control major interpersonal violence without formal police and judicial apparatus of the sort customary in industrial societies, even though these antiviolent towns are surrounded by others showing a “normal” level of violence. Because the antiviolent places share biological inheritance, culture, language (Zapotec and Spanish), climate, ecology, poverty, boundary disputes, and abundant use of alcohol with their neighbors, such factors may be discarded as determining either violence or antiviolence. The antiviolent communities do differ from their neighbors, however, in showing a near absence of “machismo,” contrasting practices in child rearing, very few close friendships linking adults of the same sex, and a much stronger social role for women. First results from trials of psychological tests are highly congruent with ethnographic observations.     

Confirmatory factor analysis of the AEQ-A questionnaire in Finland

The Adolescent version of the Alcohol Expectancy Questionnaire (Brown et al., 1980) was administered to a male population sample in Finland (N=195; median age 18.5 years). Three issues were investigated: Did the items of each subscale measure single latent constructs? Was the AEQ-A better described by a single-factor model (e.g., global positive expectancy) or by a null model implying scale independence? Were alcohol expectancies related to drinking habits? Confirmatory factor analyses by PRELIS2 and LISREL8 indicated that single-construct models were appropriate only for the Enhanced sexuality and Increased arousal scales while several items were unrelated to the postulated latent constructs in the other five scales. Adequate fits were obtained for these scales only when unrelated items were removedand/or anlayses were based on nondichotomus scores derived from contentwise homogenous groups of items. Even when revised so that the each scale formally fitted a single latent construct, the resulting latent constructs were not well described by either the single-factor model or the null model. Expected social benefit in terms of the revised Enhanced or impeded social behavior scale was the most significant predictor of drinking frequency while quantity consumed per drinking occasion was significantly related to the Improved cognitive and motor abilities scale only.     

Changing Gender Norms for Alcohol Consumption: Social Drinking and Lowered Inhibitions at Bachelorette Parties

In this research, we examined the role of alcohol as both substance and symbol at bachelorette parties. The bachelorette party is characterized by ritualized embarrassment of the bride and by sexualized games, both of which are made easier by heavy alcohol consumption. As there are few occasions when it is considered socially acceptable for women to drink, the bachelorette party provides a unique opportunity to explore womens social drinking and public drunkenness. Based on interviews with 51 women we found that drinking seemed to add to the fun of bachelorette parties and that group alcohol consumption appeared to increase social solidarity as women at bachelorette parties bonded over their shared experience. Finally, women relied on alcohol to lower inhibitions so that they were able to feel justified in engaging in deviant behavior. Womens use of alcohol in this ritual challenges existing gender norms and conceptions of masculinity and femininity.