Peak Drinking Research Articles

Neurocognitive markers during maximum alcohol use in late adolescence as predictors of change in later drinking behaviors

AbstractThe influence of alcohol use on later neurocognitive functioning is well researched, yet few studies have investigated whether neurocognition post‐drinking initiation in adolescence predicts changes in later alcohol use. The objective of this study was to investigate neurocognitive task performance during maximum alcohol use in late adolescence as predictors of drinking behaviors 3–7 years later. Analyses (n = 105) were conducted on a longitudinal data set involving adolescents (12–13 years old) who were followed for 16 years. Time 1 (T1) was defined as the individuals' maximum drinking year within the first 10 study years and Time 2 (T2) was the first available data entry 3–7 years after T1. Four hierarchical linear regression models predicting follow‐up alcohol use were estimated: drinking days, average drinks per drinking day, peak drinks, and binge episodes. All models included inhibition/cognitive flexibility, visuospatial ability, verbal memory, working memory, and their interactions with sex, while covarying for age at T1, follow‐up duration, and controlling for T1 drinking. Better visuospatial ability at T1 predicted decreases in later binge episodes at T2 (β = −0.19, p = 0.048, partial r2 = 0.039). While better inhibition/cognitive flexibility at T1 predicted increases in follow‐up drinks per drinking day at T2 (β = 0.18, p = 0.016, partial r2 = 0.057). Findings suggest specific neurocognitive abilities during maximum drinking in late adolescence are useful as predictors of change in later drinking quantity per occasion and could potentially inform intervention research targeting this age group.

A cross-sectional examination of race, gender, and intersectionality on protective behavioral strategies and alcohol outcomes among Black and White college students.

College students consistently report problematic alcohol use (e.g., excessive drinking). Protective behavioral strategies (PBS) are behaviors for reducing alcohol use and/or problems and are negatively associated with alcohol misuse among college students. Studies suggest PBS are used more often and/or more effectively by female individuals. Additionally, examinations specifically between Black and White students have yielded mixed findings and are typically underpowered. Scant studies have investigated the intersectionality between race and gender or examined perceived effectiveness of PBS use related to alcohol outcomes. The current cross-sectional study examined if (a) race, (b) gender, and (c) their interaction moderate the associations between perceived effectiveness of PBS use on PBS use (a path) and between PBS use on alcohol outcomes (i.e., alcohol quantity, peak drinks, and problems; b path). A sample size of N = 528 college drinkers ages 18-24 years old (Mage = 19.85; 52.5%, Black, 40.3% White) completed an online survey and were used for analyses. A series of moderated mediation models were conducted. Race did not moderate the a or b paths. The positive association for the a path as well as the indirect effect of PBS perceived effectiveness on lower alcohol outcomes through PBS use were stronger for female students than male students. The intersectionality examination indicated a stronger association between more PBS use and lower consumption, specifically for White male students, and lower problems for Black female students. More attention is needed toward considering intersectionality when identifying at-risk groups and tailoring alcohol intervention efforts. (PsycInfo Database Record (c) 2024 APA, all rights reserved).

World Health Organization Risk Drinking Levels Among Mandated College Students: Associations With Alcohol Use, Mental Health, and Academic Performance.

World Health Organization (WHO) risk drinking levels (i.e., low, moderate, high, or very high risk) have been used as a drinking-reduction endpoint in clinical trials. Yet, prior work has not attempted to quantify reductions in WHO risk levels among mandated students, who may also benefit from reduced drinking. We sought to validate WHO risk drinking levels in differentiating students' alcohol-related outcomes, depressive symptoms, and academic performance. Defining risk via typical drinks per drinking day versus drinks per day was compared, and gender differences were examined. Baseline data were drawn from three intervention trials for students mandated to intervention and who were not abstinent (N = 1,436). Sex-specific WHO risk levels were generated and dummy coded, with low risk as the reference. Regression models examined associations of risk levels with positive Alcohol Use Disorders Identification Test (AUDIT) scores, peak drinking, consequences, depressive symptoms, and grade point average. Defining WHO risk via drinks per drinking day evenly dispersed students across categories, whereas drinks per day categorized most students as low risk. More women than men were classified as very high risk across definitions. Students classified as low risk differed from those classified as moderate, high, and very high risk in screening positive on the AUDIT, peak drinking, and consequences. WHO risk levels did not differentiate depressive symptoms. Differences in grade point average were inconsistent across risk definitions. WHO risk drinking levels differentiated alcohol use and consequences and, therefore, hold promise for clinical use and for quantifying drinking reductions among mandated college students.

High peak drinking levels mediate the relation between impulsive personality and injury risk in emerging adults

BackgroundAlcohol-induced injury is one of the leading causes of preventable morbidity and mortality. We investigated the relationship between impulsive personality and physical injury (e.g. falls, sports), and whether peak drinking quantity specifically, and/or risky behaviour more generally, mediates the relationship between impulsivity and injury in undergraduates.MethodWe used data from the winter 2021 UniVenture survey with 1316 first- and second-year undergraduate students aged 18–25 years (79.5% female) from five Canadian Universities. Students completed an online survey regarding their demographics, personality, alcohol use, risky behaviours, and injury experiences. Impulsivity was measured with the substance use risk profile scale, past 30-day peak alcohol use with the quantity-frequency-peak Alcohol Use Index, general risky behaviour with the risky behaviour questionnaire, and past 6-month injury experience with the World Health Organization’s (2017) injury measurement questionnaire.ResultsOf 1316 total participants, 12.9% (n = 170) reported having sustained a physical injury in the past 6 months. Mean impulsivity, peak drinking quantity, and risky behaviour scores were significantly higher among those who reported vs. did not report injury. Impulsivity and peak drinking quantity, but not general risky behaviour, predicted injury in a multi-level generalized mixed model. Mediation analyses supported impulsivity as both a direct predictor of physical injury and an indirect predictor through increased peak drinking (both p < .05), but not through general risky behaviour.ConclusionResults imply emerging adults with impulsive tendencies should be identified for selective injury prevention programs and suggest targeting their heavy drinking to decrease their risk for physical injury.

Does self-affirmation augment the effects of a mandated personalized feedback intervention? A randomized controlled trial with heavy drinking college students.

Theory and evidence indicate that affirming the value of the self before exposure to a threatening message fosters more open-minded appraisal of message content. We predicted that college students mandated to a computer-delivered personalized feedback intervention (PFI) and who engaged in a self-affirmation (SA) exercise would demonstrate reduce drinking and consequences relative to those who received an attention control. Participants were 484 undergraduates (age 18-24, 56% male, 78% White) mandated to participate in an alcohol intervention following a first-time alcohol policy violation. After a baseline assessment, each was randomized to SA (n = 256) or attention control (n = 227) prior to a computer-delivered PFI intervention. Posttest measures included an affirmation manipulation check; primary outcomes (past month weekly quantity, peak drinks, binge frequency, consequences) were assessed at 1-, 3-, 6-, 9-, and 12-month follow-ups. We used latent growth curve modeling to test study hypotheses. The SA exercise increased positive self-evaluation at posttest (p < .001). Overall reductions in drinking and consequences were observed at early follow-up (all p < .05), but the SA manipulation was not associated with intercept or slope factor differences in the models. Engaging in assessments during COVID restrictions was generally associated with reduced drinking and consequences. The SA exercise did not differentially affect trajectories of alcohol use and consequences, despite evidence that the exercise had the predicted effect on participant's self-evaluations. The lack of SA effects could be attributed to a nonthreatening PFI intervention that is generally accepted among mandated students. (PsycInfo Database Record (c) 2024 APA, all rights reserved).

Associations among sexual assault history, alcohol use, blackouts, and blackout intentions among college women

Background: Links between alcohol-induced blackouts and sexual assault (SA) are understudied. We tested whether: (1) history of blackouts, past 30-day blackouts, and past 30-day blackout intentions would be higher among women with histories of SA relative to women without; (2) baseline history of blackouts, past 30-day blackouts, and blackout intentions would predict an increase in SA severity (i.e., a continuous variable that considers SA tactic type and assault frequency) at a one-year follow-up. Methods: 1721 undergraduate women completed a baseline survey and 313 completed the follow-up. Results: Women with SA history had 2.10 higher odds of history of blackouts, 1.47 higher odds of past 30-day blackout during “one” drinking episode, 1.78 higher odds of blackout during a “few” drinking episodes, 3.21 higher odds of blackout during “most/all” drinking episodes, and 1.54 higher odds of blackout intentions in the last 30-days. Longitudinally, history of blackouts and past 30-day blackouts at baseline were associated with an increase in SA severity at follow-up, when peak drinks were not controlled. Conclusion: Longitudinal findings provide some evidence that lifetime history of blackouts and past 30-day blackouts are significant predictors of an increase in SA severity at follow-up and therefore an essential target for interventions.

Do you 'like' problems? The linkage between college students' interactions with alcohol-related content on social media and their alcohol-related problems.

Alcohol-related content (ARC) on social media and drinking motives impact college students' drinking. Most studies have examined peer-generated ARC on drinking outcomes but have yet to extend this relationship to other sources of influence. The current study explores the link between drinking motives, alcohol company ARC, celebrity ARC, and alcohol-related problems among college students. Students (N = 454) from two US universities completed a cross-sectional online survey assessing demographics; drinking motives (Drinking Motives Questionnaire-Revised; Cooper, Psychol Assess. 1994;6:117-28); following/awareness of alcohol company ARC; engagement with celebrity ARC; peak drinks (most drinks consumed on one occasion); and alcohol-related problems (e.g., passed out). Greater celebrity ARC was linked to coping, enhancement, and conformity motives, and peak drinks. Frequent engagement with celebrity ARC was associated with higher problems. Positive indirect effects were observed from celebrity ARC to problems through coping and conformity motives, and peak drinks. After having adjusted for the influence of celebrity ARC, no significant pathways were found between alcohol company ARC and any of the drinking motives, peak drinks or problems, nor were there any indirect effects between alcohol company ARC and problems. Results revealed that a possible explanation for why students who engaged with celebrity ARC experience problems was due to coping and conformity motives as well as peak drinks. Interventions targeting alcohol cognitions might assess engagement with and exposure to different sources of ARC given their potential to influence problems.

Following social media influencers who share alcohol-related content is associated with college drinking.

Frequent exposure to peer-shared alcohol-related content (ARC) on social media is associated with greater alcohol consumption and related consequences among undergraduates. Social media influencers also share ARC; yet, the effect of exposure to influencer-shared ARC on alcohol outcomes has not been examined. The current study examined whether following influencers who share ARC and the frequency of sharing were associated with alcohol outcomes, and associations between influencer type (e.g., actors) and alcohol outcomes. Undergraduates (N = 528) from two universities in the United States completed an online survey assessing demographics, social media use, alcohol use and related consequences. They listed up to five influencers they followed and viewed the most content from. A series of linear regression models were conducted. Having a larger proportion of influencers sharing ARC was associated with greater quantity, frequency and peak drinks, but not consequences. Frequency of influencers sharing ARC was associated with greater quantity and peak drinks, but not frequency or consequences. Findings remained significant, even after controlling for peer ARC. Actor ARC, everyday person ARC and 'other' type influencer ARC were associated with several alcohol outcomes. This study added to the literature by examining how following influencers who share ARC, and sharing frequency, were associated with drinking outcomes over and above exposure to peer ARC. It also examined whether ARC content from specific types of influencers was associated with alcohol outcomes. Findings highlight that the source of ARC is relevant when studying the effects of ARC exposure on college drinking.

Age and Fear of Missing Out as Moderators of the Association between Peak Drinks and Alcohol-Induced Blackouts among Adolescents and Young Adults

Background: Alcohol-induced blackouts are periods of impaired memory in which an individual is unable to recount events that occurred while they were intoxicated and are associated with heavier drinking episodes. Objectives: The present study examined age and Fear of Missing Out (FoMO) as moderators of the association between peak number of drinks and experiencing alcohol-induced blackouts. Participants ages 15–25 (N = 411; Mean age = 21.4 (SD = 2.5); 61.6% female) completed baseline and daily surveys as part of a larger ecological momentary assessment study. Past month blackout experiences and peak number of drinks were reported at baseline and FoMO was reported in daily surveys one to three weeks following the baseline survey. Results: A zero-inflated negative binomial model was fit to examine the interaction between peak number of drinks with age and FoMO on alcohol-induced blacking out, controlling for relevant covariates. Findings indicated the association between peak number of drinks on the likelihood of alcohol-induced blacking out was significantly moderated by age. The association was stronger for younger compared to older individuals. Findings further indicated the associations between peak number of drinks on both the likelihood and average number of alcohol-induced blacking out was significantly moderated by FoMO. For individuals with higher levels of FoMO, the association between peak drinks and alcohol-induced blacking out was weaker for the likelihood of experiencing any blackouts and stronger for the number of blackouts. Conclusions: Findings provide support to previous literature examining age and FoMO as risk factors for alcohol-induced blackouts among adolescents and young adults.

Associations Between Positive Childhood Experiences and Adult Smoking and Alcohol Use Behaviors in a Large Statewide Sample.

Childhood experiences are linked to myriad indices of health and wellbeing in adulthood, including substance use behaviors. Increasingly, there has been a paradigm shift in prevention science focused on healthy outcomes of positive experiences. The current study examined associations between retrospective reports of positive childhood experiences and patterns of smoking and alcohol use in adulthood. Data were from the 2019 Montana Behavioral Risk Factor Surveillance System survey (N = 6,495; Mage = 55.9years; 49% male as assigned at birth). Outcomes examined with regard to positive childhood experiences included lifetime smoking (> 100 cigarettes), current smoking status, and past-month alcohol use indices (i.e., total drinks, typical quantity, heavy episodic drinking, and peak drinking occasion). Positive childhood experience scores were inversely associated with both smoking outcomes (AORs = 0.66 and 0.61). Curiously, positive childhood experiences were positively associated with any past-month alcohol use (AOR = 1.12), but among respondents who did use alcohol in the past month, positive childhood experiences were inversely associated with all indices of alcohol use patterns: total drinks (CR = 0.94), drinks per occasion (CR = 0.95), heavy episodic occasions (AOR = 0.91), and peak drinking (AOR = 0.95). Findings generally indicated that positive childhood experiences may be protective against cigarette and high-risk alcohol use behaviors in adulthood. Item-by-item analyses identified specific childhood experiences that may be particularly protective, which may inform prevention efforts and policy (prevention recommendations are discussed below).

A Gamified Personalized Normative Feedback App to Reduce Drinking Among Sexual Minority Women: Randomized Controlled Trial and Feasibility Study.

BackgroundSexual minority women disproportionately engage in heavy drinking and shoulder the burden of alcohol dependence. Although several intensive interventions are being developed to meet the needs of treatment-seeking sexual minority women, there remains a lack of preventive interventions to reduce drinking and its consequences among women not yet motivated to reduce their alcohol consumption.ObjectiveWe aimed to examine the feasibility and efficacy of reducing alcohol-related risks via personalized normative feedback (PNF) on alcohol use and coping delivered within LezParlay, a social media–inspired digital competition designed to challenge negative stereotypes about lesbian, bisexual, and queer (LBQ)–identified sexual minority women.MethodsFeasibility was assessed by examining engagement with LezParlay outside the context of an incentivized research study, assessing the characteristics of the LBQ women taking part, and examining the competition’s ability to derive risk-reducing actual norms as well as levels of acceptability and perceived benefits reported by participants. Intervention efficacy was examined by randomizing a subsample of 499 LBQ alcohol consumers (ie, drinkers) already taking part in the competition to receive sexual identity–specific PNF on alcohol use and coping, alcohol use only, or control topics over only 2 rounds of play. Changes in alcohol use and negative consequences were examined 2 and 4 months after the delivery of treatment PNF.ResultsA total of 2667 diverse LBQ women played ≥1 round of LezParlay. The competition attracted large numbers of moderate and heavy drinkers; however, risk-reducing actual norms could still be derived from competition rounds and featured in PNF. Efficacy results revealed that drinkers who received PNF on alcohol use and both alcohol use and coping had similar reductions in their weekly drinks (P=.003; P<.001), peak drinks (P<.001; P<.001), and negative consequences (P<.001; P<.001) relative to those who received PNF on control topics at the 2-month follow-up. However, at the 4-month follow-up, reductions in alcohol consumption outcomes faded among those who received alcohol PNF only (weekly: P=.06; peak: P=.11), whereas they remained relatively robust among those who received PNF on both alcohol use and coping (weekly: P=.02; peak: P=.03). Finally, participants found the competition highly acceptable and psychologically beneficial as a whole.ConclusionsThe LezParlay competition was found to be a feasible and efficacious means of reducing alcohol-related risks in this population. Our findings demonstrate the utility of correcting sexual identity–specific drinking and coping norms to reduce alcohol-related risks among LBQ women and suggest that this approach may also prove fruitful in other stigmatized health disparity populations. To engage these populations in the real world and expand the psychological benefits associated with PNF, our findings also point to packaging PNF within a broader, culturally tailored competition designed to challenge negative group stereotypes.Trial RegistrationClinicalTrials.gov NCT03884478; https://clinicaltrials.gov/ct2/show/NCT03884478International Registered Report Identifier (IRRID)RR2-10.2196/24647

Likelihood of Posting Alcohol-Related Content on Social Networking Sites – Measurement Development and Initial Validation

Background: The vast majority of adolescents and young adults are active on social networking sites (SNSs). SNSs are influential, risk-conducive environments for alcohol use among adolescents and young adults. Specifically, posting or sharing alcohol-related content (ARC) is associated with higher levels of alcohol use. However, it is unknown if sharing different types of ARC associates differentially with alcohol use and consequences. Objective: The goal of the current project was to develop a measure of the likelihood of posting key types of ARC posted by adolescents and young adults and to examine their associations with SNS use patterns and actual alcohol-related behavior. Method: Participants were 15–20 years of age (n = 306; 46.7% male; 56.6% Caucasian/White; 27.0% Asian) who completed a battery of self-report measures. Results: Results from an exploratory factor analysis revealed four types of ARC: (1) self and friend consumption, (2) memes and viral photos, (3) status updates: others’ drinking and consequences, and (4) pictures: others’ drinking and consequences. Conclusions: Participants’ likelihood of posting self and Friend Consumption was significantly associated with heightened Snapchat use, typical drinks per week, peak drinking, and negative drinking consequences. Whereas youth appear to share more readily alcohol-related viral posts and memes, it seems that the sharing of ARC that is specifically related to the participants’ own use or friends’ use is salient concerning alcohol use and problems. Therefore, interventions might consider sending targeted prevention messages to individuals who share certain types of ARC which are more associated with problematic alcohol behaviors.

Attitude toward heavy drinking as a key longitudinal predictor of alcohol consumption and problems.

Little research has considered the importance of a person's attitude toward heavy drinking when evaluated against other well-known predictors of alcohol use and related harm including drinking motives and drinker identity. The current study aimed to evaluate whether one's favorable attitude toward heavy drinking is a unique predictor of prospectively assessed drinking-related outcomes when considered against descriptive and injunctive norms, drinking intentions, drinking motives, and drinker identity. Participants in the current study comprised mandated students (n=374; 54% male) who violated a campus alcohol policy and received a brief intervention (eCHECKUP TO GO). Analyses included the use of negative binomial regression to examine baseline predictors- attitude toward heavy drinking, perceived descriptive and injunctive norms, drinking intentions, drinking motives, and drinker identity-of prospective alcohol use outcomes and alcohol-related problems 1month later. We found that one's attitude toward heavy drinking remains a significant predictor of binge frequency, peak drinking, and alcohol-related problems when accounting for norms, intentions, motives, and identity. This study has important theoretical and intervention implications. Indeed, the finding that one's attitude toward heavy drinking remains a significant predictor of alcohol-related outcomes when intentions are included in the model has implications within the theory of planned behavior. Furthermore, attitude toward heavy drinking has predictive utility when considered against descriptive and injunctive norms, drinking motives, and drinker identity. These findings contribute to a growing literature suggesting that attitudes could be an important intervention target when the goal is to change drinking behavior.

Heavy Drinking among High School Student Athletes and Non-Athletes: Do Differences Emerge as Early as the Ninth Grade?

Background: High school athletes have been identified as a high-risk group for heavy drinking. Little is known, however, about the timing of when student athlete heavy drinking begins to diverge from that of non-athletes. Objectives: The aim of the current study is to examine differences in changes in heavy drinking among ninth grade student athletes and non-athletes across the academic year. We hypothesized that student athletes would report greater increases in heavy drinking compared to non-athletes from fall to spring semester. Methods: Ninth grade students (N = 217) aged 13 to 15 completed questionnaires on heavy drinking indices, quantity of peak drinking, frequency of binge drinking, and estimated blood alcohol concentration (eBAC) during the fall and spring semesters. Results: Consistent with our hypothesis, student athletes reported significantly greater increases in heavy drinking compared to non-athletes from fall to spring semester. Additionally, there was a significant increase in all three indices of heavy drinking for student athletes, whereas there were no significant changes for non-athletes. Conclusions: Results demonstrate divergence in the quantity and frequency of heavy drinking between student athletes and non-athletes during the ninth grade. These findings indicate the optimal timing of preventive intervention programs may be different for student athletes and non-athletes. Results also suggest that preventive intervention program targeting heavy drinking should be implemented for high school student athletes as early as the fall semester of the ninth grade when students are transitioning to high school.

Do the effects of parent-based alcohol interventions depend on college residence? A short communication

Parent-based interventions (PBIs) and living at home with one’s parents both have been shown to mitigate alcohol risk associated with the first year of college. The current study extends these findings by examining the independent and interactive effects of these two constructs on first-year drinking. The sample included 82 parent-student dyads. Parents were randomized to receive an online PBI that either did (intervention; n = 44) or did not (n = 38) include alcohol-related content in December 2020. Students completed online surveys assessing college residence and drinking (typical weekly and peak) in August 2020 (T1) and February 2021 (T2). Hierarchical zero-inflated Poisson models assessed the main and interaction effects of having a parent in the intervention group (vs control) and living with parents (vs without) on drinking outcomes, controlling for T1 alcohol use. Results revealed that living with parents predicted decreases in typical weekly drinking and having a parent in the intervention predicted decreases in the number of drinks consumed on one’s peak drinking occasion at T2. Treatment*residence was also significantly associated with typical weekly drinking in the inflated model. These results suggest that moving out was associated with a greater likelihood of not drinking during a typical week if students had a parent in the intervention and a lower likelihood of not drinking during a typical week if they had a parent in the control application. Together, findings support continued exploration of this online PBI as it appears to reduce peak drinking during the first year of college and reduces the odds of students drinking during a typical week when they move out of their parents’ home.

Protective behavioral strategies underutilization mediates effect of a brief motivational intervention among socially anxious undergraduate drinkers.

Social anxiety (SA) is implicated in problematic undergraduate drinking. Brief motivational interventions (BMIs) reduce problematic undergraduate drinking. However, not all students benefit. Identification of vulnerable subgroups is an important next step. The current study examined the role of SA and protective behavioral strategies (PBS) on BMI outcomes. We reanalyzed a subset of data (53.3%; N = 120; 62.5% male) from a randomized trial in which heavy drinking undergraduates were randomized to a BMI or control. SA, past-month typical drinks, peak drinks, weekly quantity, alcohol problems, and PBS were assessed at baseline and 6 weeks. Main effects and interaction among the intervention condition (BMI vs. control) and SA group (low vs. high) were tested on alcohol outcomes and PBS. High SA undergraduates reported greater baseline drinking, more alcohol problems, and lower PBS. Post-BMI, high SA drinkers continued to report greater peak drinks, typical drinks, alcohol problems, and lower PBS use, controlling for baseline use. Among the BMI condition, parallel multiple mediation analyses revealed the PBS subscale Manner of Drinking uniquely mediated the relationship between SA and heavier post-BMI drinking. The PBS Manner of Drinking and Serious Harm Reduction subscales jointly mediated the relationship between SA and greater post-BMI alcohol problems. BMIs may need to be refined to improve outcomes for socially anxious drinkers. Increasing PBS utilization post-BMI may help improve BMI efficacy in this vulnerable group. Clinical implications are discussed. (PsycInfo Database Record (c) 2021 APA, all rights reserved).

Sex-specific associations between subcortical morphometry in childhood and adult alcohol consumption: A 17-year follow-up study

Men and women tend to differ in the age of first alcohol consumption, transition into disordered drinking, and the prevalence of alcohol use disorder. Here, we use a unique longitudinal dataset to test for potentially predispositonal sex-biases in brain organization prior to initial alcohol exposure. Our study combines measures of subcortical morphometry gathered in alcohol naive individuals during childhood (mean age: 9.43 years, SD = 2.06) with self-report measures of alcohol use in the same individuals an average of 17 years later (N = 81, 46 males, 35 females). We observe that pediatric amygdala and hippocampus volume both show sex-biased relationships with adult drinking. Specifically, females show a stronger association between subcortical volumetric reductions in childhood and peak drinking in adulthood as compared to males. Detailed analysis of subcortical shape localizes these effects to the rostro-medial hippocampus and basolateral amygdala subnuclei. In contrast, we did not observe sex-specific associations between striatal anatomy and peak alcohol consumption. These results are consistent with a model in which organization of the amygdala and hippocampus in childhood is more relevant for subsequent patterns of peak alcohol use in females as compared to males. Differential neuroanatomical precursors of alcohol use in males and females could provide a potential developmental basis for well recognized sex-differences in alcohol use behaviors.. Thus, our findings not only indicate that brain correlates of human alcohol consumption are manifest long before alcohol initiation, but that some of these correlates are not equivalent between males and females.

Longitudinal Change in Alcohol Use and Motivations for Drinking Among Asian American College Students.

Asian Americans are understudied in the literature on alcohol, due to data limitations and the perception that they are at low risk for alcohol misuse. Yet, certain subpopulations-such as college students-may be at higher risk. The current study examined longitudinal change in alcohol use and motivations for drinking among Asian American students. We tested for differences by nativity status, ethnic origin, and gender and examined whether motivations covaried with alcohol use. Asian American first-year college students (N=199, 45.7% female, 37.7% foreign-born) attending a US university were identified through stratified random sampling using registrar information. For 7 consecutive semesters, students completed online surveys about their behaviors and beliefs. Multilevel models demonstrated that alcohol use and alcohol-related motivations increased over time. US-born students consistently consumed more alcoholic drinks, reached higher peak drinking levels, and drank more frequently than foreign-born students; however, motivations did not differ by nativity status. Chinese American students consumed less alcohol, drank less, and were more motivated to avoid alcohol-related consequences than students of other/multiple heritage ethnic origins. Each motivation subscale was associated with alcohol use at the between-person level. Likewise, within-person variability in motivations was linked to variability in drinking across semesters. Controlling for other motivations, drinking for fun emerged as the strongest correlate of alcohol use variability. Alcohol misuse was highest among US-born students and those with higher motivations for drinking. Furthermore, alcohol use varied in tandem with motivations, suggesting that motivations may be a useful intervention target among this population.

Effectiveness of an Ecological Momentary Intervention for Reducing Risky Alcohol Consumption Among Young Adults: Protocol for a Three-Arm Randomized Controlled Trial.

BackgroundRecent research has investigated the utility of mobile phone–delivered interventions for reducing risky single-occasion drinking, also known as binge drinking. In the past five years, focus has been placed on ecological momentary interventions (EMIs), which aim to deliver intervention content in correspondence to real-time assessments of behavior, also known as ecological momentary assessments (EMAs).ObjectiveThis study aims to assess the effect of a fully automated, tailored, mobile phone–delivered EMI termed Mobile Intervention for Drinking in Young people (MIDY) on young people's risky single-occasion drinking behavior.MethodsWe will use a three-armed randomized controlled trial design to determine the impact of MIDY on peak consumption of alcohol among young people. A list of mobile telephone numbers for random digit dialing will be generated, and researchers will telephone potential participants to screen for eligibility. Participants will be randomized into one of three intervention groups. For 6 weeks, EMI, EMA, and attention control groups will complete hourly EMA surveys on their mobile phones on Friday and Saturday nights. EMI participants will receive personalized feedback in the form of text messages corresponding to their EMA survey responses, which focus on alcohol consumption, spending, and mood. EMA participants will not receive feedback. A third group will also complete EMA and receive feedback text messages at the same time intervals, but these will be focused on sedentary behavior and technology use. All groups will also complete a short survey on Saturday and Sunday mornings, with the primary outcome measure taken on Sunday mornings. A more detailed survey will be sent on the final Sunday of the 6-week period, and then again 1 year after recruitment.ResultsThe primary outcome measure will be an observed change (ie, reduction) in the mean peak number of drinks consumed in a single night over the 6-week intervention period between the EMI and attention control groups as measured in the weekly EMA. We expect to see a greater reduction in mean peak drinking in the EMI group compared to that in the attention control group. As a secondary aim, we will assess whether mean peak drinking is reduced in the EMA group compared to the attention control group. We will use a random-effects mixed-modeling approach using maximum-likelihood estimation to provide estimates of differences in peak drinking across time periods between those receiving the intervention (EMI) and attention control participants. An intention-to-treat approach will be taken for the analysis. Individuals and study groups will be modeled as random and fixed factors, respectively.ConclusionsThis study extends our previous work investigating the efficacy of a mobile EMI (MIDY) for reducing risky drinking among young adults in Australia, and will add to the expanding literature on the use of mobile interventions for reducing risky alcohol consumption.Trial RegistrationAustralian New Zealand Clinical Trials Registration (ANZCTR): ACTRN12617001509358p; http://www.anzctr.org.au/ACTRN12617001509358p.aspxInternational Registered Report Identifier (IRRID)DERR1-10.2196/14190

Examining the associations between alcohol-related parental communication, alcohol use, and protective behavioral strategy use among young adults

Underage alcohol use is a public health concern as it remains prevalent and problematic. Protective behavioral strategies (PBS) may prevent or reduce alcohol-related consequences, yet daily-level findings show they instead might be associated with increased drinking and consequences. While parents are a possible source of influence to their child’s decision making, it is unclear whether parental communication about alcohol affects drinking outcomes, with mixed findings noted in the literature. Furthermore, little research focuses on understanding how parental communication may impact the use of PBS. This study assessed whether alcohol specific parental communication would be associated with reduced drinking and increased use of PBS. Data from baseline and 3-month follow up were evaluated from a control group of a larger randomized controlled trial on 18- to 20-year-olds in the U.S. (N = 269). Outcomes included drinks per week, peak drinks per occasion, negative consequences and use of PBS. Using negative binomial regression modeling, controlling for age, sex, and whether participants lived with parents, findings revealed that parental communication was not associated with drinks per week, peak drinks per occasion, or negative consequences reported 3 months later. However, it was positively associated with limiting/stopping drinking PBS, manner of drinking PBS, and serious harm reduction PBS reported 3 months later. Results suggest that parental communication about alcohol may be more effective in increasing the use of protective behavioral strategies rather than reduction of drinking. Research is needed to determine why parental communication may influence the use of PBS and how we can strengthen the quality or focus of communication to ultimately increase the impact on risk behaviors.