Early Adolescent Alcohol Research Articles

Mother-child dynamics: Examining reciprocal relations between parental knowledge, child disclosure, parental legitimacy beliefs, and adolescent alcohol use.

Early adolescent alcohol use is associated with adverse developmental and health outcomes. Parental knowledge can prevent or delay substance use, while youth behaviors may concurrently influence parenting. More research is needed to examine the role of youth's perceptions of legitimacy of parental authority. This multi-informant study examined prospective bidirectional effects between parental knowledge and child disclosure alongside youth-reported alcohol use and perceived legitimacy of parental authority. Data were analyzed across three waves in a community sample of 304 mother-child dyads. A cross-lagged panel model was estimated using repeated measures of adolescent alcohol use, perceived legitimacy of parental authority, parental knowledge, and child disclosure. Positive reciprocal associations were found in early adolescence between child disclosure and both parental knowledge and perceived legitimacy of parental authority. Legitimacy of parental authority negatively predicted alcohol use across adolescence. Child alcohol use also negatively predicted parental knowledge among mothers in later adolescence. Effects were not reciprocated nor sustained. Novel findings demonstrate that the parental legitimacy beliefs predict reduced alcohol use and have a reciprocal association with child disclosure. Clinical implications to mitigate youth alcohol use initiation, by enhancing parental self-efficacy and positive parenting, are discussed.

Social epidemiology of early adolescent alcohol expectancies

PurposeTo determine the sociodemographic correlates of alcohol expectancies (i.e., beliefs regarding positive or negative effects of alcohol) in a national (U.S.) cohort of early adolescents 10–14 years old. A second aim was to determine associations between alcohol sipping and alcohol expectancies.MethodsWe analyzed cross-sectional data from the Adolescent Brain Cognitive Development (ABCD) Study (N = 11,868; Year 2). Linear regression analyses were conducted to estimate associations between sociodemographic factors (sex, race/ethnicity, sexual orientation, household income, parental education, parent marital status, religiosity) and positive (e.g., stress reduction) and negative (e.g., loss of motor coordination) alcohol expectancies. Additional linear regression analyses determined associations between alcohol sipping and alcohol expectancies, adjusting for sociodemographic factors.ResultsOverall, 48.8% of the participants were female and 47.6% racial/ethnic minorities, with a mean age of 12.02 (SD 0.67) years. Older age among the early adolescent sample, male sex, and sexual minority identification were associated with more positive and negative alcohol expectancies. Black and Latino/Hispanic adolescents reported less positive and negative alcohol expectancies compared to White non-Latino/Hispanic adolescents. Having parents with a college education or greater and a household income of $200,000 and greater were associated with higher positive and negative alcohol expectancies. Alcohol sipping was associated with higher positive alcohol expectancies.ConclusionsOlder age, White non-Latino/Hispanic race, male sex, sexual minority status, higher parental education, and higher household income were associated with higher positive and negative alcohol expectancies. Future research should examine the mechanisms linking these specific sociodemographic factors to alcohol expectancies to inform future prevention and intervention efforts.

Pandemic-Related Changes in the Prevalence of Early Adolescent Alcohol and Drug Use, 2020–2021: Data From a Multisite Cohort Study

PurposeEvaluate changes in early adolescent substance use from May 2020 to May 2021 during the coronavirus disease 2019 pandemic using data from a prospective nationwide cohort: the Adolescent Brain Cognitive Development Study. MethodsIn 2018–2019, 9,270 youth aged 11.5–13.0 completed a prepandemic assessment of past-month alcohol and drug use, then up to seven during-pandemic assessments between May 2020 and May 2021. We compared the prevalence of substance use among same-age youth across these eight timepoints. ResultsPandemic-related decreases in the past-month prevalence of alcohol use were detectable in May 2020, grew larger over time, and remained substantial in May 2021 (0.3% vs. 3.2% prepandemic, p <.001). Pandemic-related increases in inhalant use (p = .04) and prescription drug misuse (p < .001) were detectable in May 2020, shrunk over time, and were smaller but still detectable in May 2021(0.1%-0.2% vs. 0% pre-pandemic). Pandemic-related increases in nicotine use were detectable between May 2020 and March 2021 and no longer significantly different from prepandemic levels in May 2021 (0.5% vs. 0.2% prepandemic, p = .09). There was significant heterogeneity in pandemic-related change in substance use at some timepoints, with increased rates among youth identified as Black or Hispanic or in lower-income families versus stable or decreased rates among youth identified as White or in higher-income families. DiscussionAmong youth ages 11.5–13.0 years old, rates of alcohol use remained dramatically reduced in May 2021 relative to prepandemic and rates of prescription drug misuse and inhalant use remained modestly increased. Differences remained despite the partial restoration of prepandemic life, raising questions about whether youth who spent early adolescence under pandemic conditions may exhibit persistently different patterns of substance use.

The relationship between age at first drink and later risk behaviours during a period of youth drinking decline.

Alcohol consumption among teenagers in many high-income countries has steadily declined since the early 2000s. There has also been a steady increase in the average age at first drink, a reliable marker of later alcohol problems. This study measured whether young people who initiated drinking early were at increased risk of alcohol problems in young adulthood in recent cohorts where early initiation was comparatively rare. Analysis of six waves of a repeated cross-sectional household survey (2001-16). Australia. A total of 9576 young adults (aged 20-25 years) who had initiated drinking before the age of 20 years. Respondents were classified into three groups based on their self-reported age at first drink (< 16, 16-17, 18-19 years). Outcome variables were self-reported experiences of memory loss while drinking, risky and delinquent behaviour while drinking and monthly or more frequent drinking occasions of 11 or more 10-g standard drinks. Later initiators reported lower levels of all outcomes [e.g. odds ratios (ORs) for memory loss were 0.56, 95% confidence interval (CI) = 0.50, 0.63] for those who first drank at 16 or 17 years compared with those who first drank at age 15 or younger). Significant interactions between age at first drink and survey year showed that early initiation was more strongly associated with harms (e.g. for memory loss, OR = 0.97, 95% CI = 0.94, 0.99 for 18-19 versus 15 or younger) in young adulthood for recent cohorts where early drinking was less common. The decline in youth drinking may have contributed to a concentration of risk of alcohol problems among those young people who consume alcohol in early adolescence. Early initiation of drinking may be an increasingly important marker of broader risk taking as alcohol becomes less normative for teenagers.

Testing alternative cascades from internalizing and externalizing symptoms to adolescent alcohol use and alcohol use disorder through co-occurring symptoms and peer delinquency.

Given the equivocal literature on the relationship between internalizing symptoms and early adolescent alcohol use (AU) and AU disorder (AUD), the present study took a developmental perspective to understand how internalizing and externalizing symptoms may operate together in the etiology of AU and AUD. We pit the delayed onset and rapid escalation hypothesis (Hussong et al., 2011) against a synthesis of the dual failure model and the stable co-occurring hypothesis (Capaldi, 1992; Colder et al., 2013, 2018) to test competing developmental pathways to adolescent AU and AUD involving problem behavior, peer delinquency, and early initiation of AU. A latent transactional and mediational framework was used to test pathways to AUD spanning developmental periods before AU initiation (Mage = 11) to early and high risk for AUD (Mage = 14-15 and Mage = 17-18). The results supported three pathways to AUD. The first started with "pure" externalizing symptoms in early childhood and involved multiple mediators, including the subsequent development of co-occurring symptoms and peer delinquency. The second pathway involved stable co-occurring symptoms. Interestingly, chronically elevated pure internalizing symptoms did not figure prominently in pathways to AUD. Selection and socialization effects between early AU and peer delinquency constituted a third pathway.

Binge drinking and frequent or heavy drinking among adolescents: prevalence and associated factors

ObjectiveTo analyze the sociodemographic, school, and family factors associated with the patterns of binge drinking and frequent or heavy drinking among adolescents. MethodsThis was a cross‐sectional study, nested in a randomized controlled trial, of 6285 seventh and eighth grade adolescent students from Brazilian public schools. The associations between binge drinking (consumption of five or more doses of alcohol on a single occasion) in the last 12 months and frequent or heavy drinking (alcohol consumption on six or more days) in the last month and the several factors were analyzed through weighted logistic regression. Results16.5% of the students reported binge drinking in the year before the interview and 2.2% reported frequent/heavy drinking in the previous month. The factors associated with binge drinking were cigarette smoking (OR=6.7, 95% CI=3.96; 11.23), use of marijuana (OR=2.2, 95% CI=1.17; 4.31), use of inhalant drugs (OR=3.0, 95% CI=1.98; 4.43), exposure to a drunk relative (OR=2.1, 95% C=1.67; 2.53), practice of bullying (OR=1.8, 95% CI=1.47; 2.17), verbal aggression (OR=1.7, 95%CI=1.40; 2.14), and intermediate/low school grades (OR=1.7, 95% CI=1.35; 2.20). The factors associated with frequent/heavy drinking were cigarette smoking (OR=2.5, 95% CI=1.16; 5.22), use of marijuana (OR=3.2, 95% CI=1.32; 7.72), and physical aggression (OR=2.2, 95% CI=1.36; 3.50). ConclusionsThe analyzed outcomes showed an association between the risk consumption of alcohol in early adolescence and low academic performance, involvement with other drugs, aggressiveness, and witnessing episodes of a family member's drunkenness. Considering the impact on public health of the damages caused by alcohol consumption during adolescence, these factors that showed such association should be considered in the development of preventive interventions.

Trajectories of alcohol use problems based on early adolescent alcohol use: Findings from a 35 year population cohort

BackgroundEarly exposure to alcohol in adolescence is associated with a range of long term harms. Better understanding of trajectories of alcohol use from adolescence to early adulthood would help target prevention strategies to high risk groups. MethodsChristchurch (New Zealand) general population birth cohort (n = 1265). A latent trajectory model of drinking behaviour at age 14–16 was used to predict drinking outcomes at age 18–35, net of covariate factors known to be associated with substance use outcomes in this cohort. ResultsThree classes of adolescent alcohol use were identified. These were: occasional drinkers, emergent binge drinkers and increasing heavy drinkers. ConclusionsThis analysis identifies three groups of adolescent alcohol users with differing patterns of use. Emergent binge drinkers likely require public policy responses to alcohol use whereas increasing heavy drinkers are potentially able to be identified individually on the basis of patterns of alcohol use and social variables. This group may benefit from psychosocial interventions and are unlikely to respond to a broad public health approach.

Binge drinking and frequent or heavy drinking among adolescents: prevalence and associated factors

ObjectiveTo analyze the sociodemographic, school, and family factors associated with the patterns of binge drinking and frequent or heavy drinking among adolescents. MethodsThis was a cross-sectional study, nested in a randomized controlled trial, of 6285 seventh and eighth grade adolescent students from Brazilian public schools. The associations between binge drinking (consumption of five or more doses of alcohol on a single occasion) in the last 12 months and frequent or heavy drinking (alcohol consumption on six or more days) in the last month and the several factors were analyzed through weighted logistic regression. Results16.5% of the students reported binge drinking in the year before the interview and 2.2% reported frequent/heavy drinking in the previous month. The factors associated with binge drinking were cigarette smoking (OR=6.7, 95% CI=3.96; 11.23), use of marijuana (OR=2.2, 95% CI=1.17; 4.31), use of inhalant drugs (OR=3.0, 95% CI=1.98; 4.43), exposure to a drunk relative (OR=2.1, 95% C=1.67; 2.53), practice of bullying (OR=1.8, 95% CI=1.47; 2.17), verbal aggression (OR=1.7, 95%CI=1.40; 2.14), and intermediate/low school grades (OR=1.7, 95% CI=1.35; 2.20). The factors associated with frequent/heavy drinking were cigarette smoking (OR=2.5, 95% CI=1.16; 5.22), use of marijuana (OR=3.2, 95% CI=1.32; 7.72), and physical aggression (OR=2.2, 95% CI=1.36; 3.50). ConclusionsThe analyzed outcomes showed an association between the risk consumption of alcohol in early adolescence and low academic performance, involvement with other drugs, aggressiveness, and witnessing episodes of a family member's drunkenness. Considering the impact on public health of the damages caused by alcohol consumption during adolescence, these factors that showed such association should be considered in the development of preventive interventions.

Community-Level Exposure to the Rural Mining Industry: The Potential Influence on Early Adolescent Alcohol and Tobacco Use.

Rural youth have higher rates of alcohol and tobacco use compared to their urban counterparts. However, the economic dependence of rural communities may differentially influence risk behaviors. While research has shown that adults working in mining have elevated rates of alcohol and tobacco use, the influence of living in a mining community on early adolescent substance use is unknown. Using data from a representative sample of 4,535 middle school students in a state with heavy reliance on mining, we conducted weighted logistic regression to investigate whether community-level mining economic dependence influences rural-urban differences in adolescent alcohol and tobacco use. All models adjusted for sociodemographics, military family involvement, parental monitoring, and length of residence. Over one quarter of the sampled students lived in rural counties and approximately half of these counties met the USDA mining economic typology. After stratifying rural counties by mining and nonmining economic dependence, students in rural mining counties had significantly higher odds of all measures of alcohol use (AORs ranged from 1.83 to 3.99) and tobacco use (AORs ranged from 1.61 to 5.05) compared to students in urban counties. Only use of smokeless tobacco was higher among students in rural nonmining counties. Our findings demonstrate rural-urban disparities in adolescent substance use that are particularly pronounced among youth living in counties with economic dependence on mining. Future research on this subject should include a wider range of community-level factors that may have specific relevance in rural settings to inform the development of population-level interventions.

Reciprocal variations in sleep and drinking over time among heavy-drinking young adults.

Prior studies have established an association between sleep problems during early adolescence and heavy alcohol use/alcohol use disorder (AUD) risk in late adolescence. Less research has explored the association between sleep problems and heavy alcohol use during young adulthood, the period when AUD onset peaks. Moreover, research to date has primarily utilized cross-sectional, between-subjects' methods to examine this relationship, with limited focus on the potential intraindividual variation in these behaviors. Multilevel modeling techniques are well-suited to examine the variability in sleep problems and risky alcohol use over time and the dynamic bidirectional relations among these behaviors. This article reports on 42 heavy-drinking college students at-risk for an AUD based on their responses to a validated alcohol screener who completed daily diaries of sleep and alcohol use and wore a sleep-wake activity monitor (i.e., Philips Respironics Actiwatch 2™) daily for 7 days yielding a total of 294 reports. Hierarchical linear models demonstrated that days of heavy drinking predicted delayed bed and wake times within individuals and those individuals who tended to drink more heavily on average had shorter sleep durations. Conversely, days of shorter sleep duration, earlier wake times, and greater perceived sleep quality upon waking predicted greater alcohol use within individuals, and those who tended to feel more alert upon waking drank more on average. These results highlight important within- and between-person variability in the associations among objective and subjective sleep-related problems and at-risk drinking among young adults. Further, the results have implications for alcohol prevention/intervention strategies for young adults at risk for AUDs. (PsycINFO Database Record

The Prospective Association Between Internalizing Symptoms and Adolescent Alcohol Involvement and the Moderating Role of Age and Externalizing Symptoms.

As predicted by self-medication theories that drinking is motivated by a desire to ameliorate emotional distress, some studies find internalizing symptoms (e.g., anxiety, depression) increase risk of adolescent drinking; however, such a risk effect has not been supported consistently. Our prior work examined externalizing symptoms as a potential moderator of the association between internalizing symptoms and adolescent alcohol use to explain some of the inconsistencies in the literature. We found that internalizing symptoms were protective against early adolescent alcohol use particularly for youth elevated on externalizing symptoms (a 2-way interaction). Our sample has now been followed for several additional assessments that extend into young adulthood, and the current study tests whether the protective effect of internalizing symptoms may change as youth age into young adulthood, and whether this age-moderating effect varied across different clusters of internalizing symptoms (social anxiety, generalized anxiety, and depression). Internalizing symptoms were hypothesized to shift from a protective factor to a risk factor with age, particularly for youth elevated on externalizing symptoms. A community sample of 387 adolescents was followed for 9 annual assessments (mean age=12.1years at the first assessment and 55% female). Multilevel cross-lagged 2-part zero-inflated Poisson models were used to test hypotheses. The most robust moderating effects were for levels of alcohol use, such that the protective effect of all internalizing symptom clusters was most evident in the context of moderate to high levels of externalizing problems. A risk effect of internalizing symptoms was evident at low levels of externalizing symptoms. With age, the risk and protective effects of internalizing symptoms were evident at less extreme levels of externalizing behavior. With respect to alcohol-related problems, findings did not support age moderation for generalized anxiety or depression, but it was supported for social anxiety. Findings highlight the importance of considering the role of emotional distress from a developmental perspective and in the context of externalizing behavior problems.

Neighborhood, Family, and Peer Factors Associated with Early Adolescent Smoking and Alcohol Use.

There is broad agreement that neighborhood contexts are important for adolescent development, but there is less consensus about their association with adolescent smoking and alcohol use. Few studies have examined associations between neighborhood socioeconomic contexts and smoking and alcohol use while also accounting for differences in family and peer risk factors for substance use. Data drawn from the Seattle Social Development Project (N = 808), a gender-balanced (female = 49%), multiethnic, theory-driven longitudinal study originating in Seattle, WA, were used to estimate trajectories of smoking and alcohol use from 5th to 9th grade. Time-varying measures of neighborhood socioeconomic, family, and peer factors were associated with smoking and alcohol use at each wave after accounting for average growth in smoking and alcohol use over time and demographic differences. Results indicated that living in more socioeconomically disadvantaged neighborhoods, lower family income, lower family general functioning, more permissive family smoking environments, and affiliation with deviant peers were independently associated with increased smoking. Lower family functioning, more permissive family alcohol use environments, and deviant peers were independently associated with increased alcohol use. The effect of neighborhood disadvantage on smoking was mediated by family income and deviant peers while the effect of neighborhood disadvantage on alcohol use was mediated by deviant peers alone. Family functioning and family substance use did not mediate associations between neighborhood disadvantage and smoking or alcohol use. The results highlight the importance of neighborhood, family, and peer factors in early adolescent smoking and alcohol use. Future studies should examine the unique association of neighborhood disadvantage with adolescent smoking net of family socioeconomics, functioning, and substance use, as well aspeer affiliations. Better understanding of the role of contextual factors in early adolescent smoking and alcohol use can help bolster efforts to prevent both short and long harms from substance use.

Longitudinal relationships of sleep and inhibitory control deficits to early adolescent cigarette and alcohol use

Research in older adolescents suggests insufficient sleep may increase substance use initiation risk. This study tested whether sleep duration and dysregulation of sleep-wake patterns in late-elementary school youth were prospectively associated with cigarette and alcohol use initiation and how sleep-related changes in inhibitory control mediate these relationships. Average sleep duration at 4th grade predicted 6th grade cigarette but not alcohol use, however indirect effects were identified through 5th grade inhibitory control to both cigarette and alcohol use. Indirect effects were also identified through inhibitory control for relationships between 4th grade weekend bed-time delay and 6th grade cigarette or alcohol use, and for relationships between 4th grade weekend wake-time delay and 6th grade cigarette or alcohol use. Reductions in nightly sleep increased risk of cigarette use. Findings suggest a pathway linking both reduced sleep duration and greater weekend shifting of sleep patterns to future substance use through sleep-related inhibitory control deficits.

Alcohol drinking during adolescence increases consumptive responses to alcohol in adulthood in Wistar rats.

Binge drinking and the onset of alcohol-use disorders usually peak during the transition between late adolescence and early adulthood, and early adolescent onset of alcohol consumption has been demonstrated to increase the risk for alcohol dependence in adulthood. In the present study, we describe an animal model of early adolescent alcohol consumption where animals drink unsweetened and unflavored ethanol in high concentrations (20%). Using this model, we investigated the influence of drinking on alcohol-related appetitive behavior and alcohol consumption levels in early adulthood. Further, we also sought to investigate whether differences in alcohol-related drinking behaviors were specific to exposure in adolescence versus exposure in adulthood. Male Wistar rats were given a 2-bottle choice between 20% ethanol and water in one group and between two water bottles in another group during their adolescence (Postnatal Day [PD] 26-59) to model voluntary drinking in adolescent humans. As young adults (PD85), rats were trained in a paradigm that provided free access to 20% alcohol for 25min after completing up to a fixed-ratio (FR) 16 lever press response. A set of young adult male Wistar rats was exposed to the same paradigm using the same time course, beginning at PD92. The results indicate that adolescent exposure to alcohol increased consumption of alcohol in adulthood. Furthermore, when investigating differences between adolescent high and low drinkers in adulthood, high consumers continued to drink more alcohol, had fewer FR failures, and faster completion of FR schedules in adulthood, whereas the low consumers were no different from controls. Rats exposed to ethanol in young adulthood also increased future intake, but there were no differences in any other components of drinking behavior. Both adolescent- and adult-exposed rats did not exhibit an increase in lever pressing during the appetitive challenge session. These data indicate that adolescent and early adult alcohol exposure can increase consumptive aspects of drinking but that adolescent exposure may preferentially influence the motivation to drink.

Personality and Early Adolescent Alcohol Use: Assessing the Four Factor Model of Vulnerability

Personality and Early Adolescent Alcohol Use: Assessing the Four Factor Model of Vulnerability

The Link between Early Adolescent Alcohol Abuse and Adult Antisocial Behaviour: A Hypothesis Revisited

The Link between Early Adolescent Alcohol Abuse and Adult Antisocial Behaviour: A Hypothesis Revisited

Parents Who Supply Sips of Alcohol in Early Adolescence: A Prospective Study of Risk Factors.

Parents are a major supplier of alcohol to adolescents, often initiating use with sips. Despite harms of adolescent alcohol use, research has not addressed the antecedents of such parental supply. This study investigated the prospective associations between familial, parental, peer, and adolescent characteristics on parental supply of sips. Participants were 1729 parent-child dyads recruited from Grade 7 classes, as part of the Australian Parental Supply of Alcohol Longitudinal Study. Data are from baseline surveys (Time 1) and 1-year follow-up (Time 2). Unadjusted and adjusted logistic regressions tested prospective associations between Time 1 familial, parental, peer, and adolescent characteristics and Time 2 parental supply. In the fully adjusted model, parental supply was associated with increased parent-report of peer substance use (odds ratio [OR] = 1.20, 95% confidence ratio [CI], 1.08-1.34), increased home alcohol access (OR = 1.07, 95% CI, 1.03-1.11), and lenient alcohol-specific rules (OR=0.88, 95% CI, 0.78-0.99). Parents who perceived that their child engaged with substance-using peers were more likely to subsequently supply sips of alcohol. Parents may believe supply of a small quantity of alcohol will protect their child from unsupervised alcohol use with peers. It is also possible that parental perception of peer substance use may result in parents believing that this is a normative behavior for their child's age group, and in turn that supply is also normative. Further research is required to understand the impacts of such supply, even in small quantities, on adolescent alcohol use trajectories.

The Outcomes of an Alcohol Prevention Program on Parents’ Rule Setting and Self-efficacy: a Bidirectional Model

Most adolescents have their first encounter with alcohol in early or middle adolescence. Parents' rule setting about alcohol has been shown to be important to delay the onset and reduce the frequency of adolescents' alcohol drinking, but less is known about the potential role of parents' beliefs about their competence in and ability to influence their adolescents' drinking habits (i.e., parental self-efficacy [PSE], Bandura (Psychological Review, 84, 191-215, 1977). In this study, we examined the direction of influence between parents' rule setting and PSE as outcomes of the program "Prevention of Alcohol use in Students" (PAS), a prevention program aiming to reduce underage drinking by targeting parents and adolescents both separately and in a combined intervention. We tested two mediation processes in which the program would (a) have a direct effect on PSE, which in turn would increase parents' rule setting or (b) have a direct effect on parents' rule setting, which in turn would increase PSE. To examine these processes, we used a sample of 2562 parent-adolescent dyads (age 12 at baseline), followed annually over 3years. The results showed that the combined intervention increased PSE via an increase in parents' rule setting. No significant effect of the intervention on rules about alcohol via PSE was found. This is the first study to test the mediation processes involving PSE and parental rule setting in an experimental context where parenting practices are being actively changed. The results suggest that giving parents concrete advice on how to deal with alcohol drinking in their adolescents and at the same time helping adolescents to develop healthy attitudes about alcohol drinking have a positive influence on parents' self-efficacy.

Peer Group Patterns of Alcohol-Using Behaviors Among Early Adolescents in Victoria, Australia, and Washington State, United States.

The goal of this study was to examine and cross-nationally compare the peer group patterns of alcohol-drinking behaviors among cohorts of early adolescents (ages 11-14years) in Victoria, Australia, and Washington State, United States. Latent transition analysis revealed that after 1year, transitions congruent with peer influence (whereby non-drinking adolescents initiated alcohol use in the presence of drinking peers) and reverse peer influence were observed in both states; however, transitions congruent with peer selection (whereby drinking adolescents self-selected into drinking peer groups) were only observed among Victorian early adolescents. Findings were interpreted to suggest that Australian family and cultural norms that more commonly allow early adolescent alcohol use lead to a higher rate of peer selection.

Investigating the Joint Development of Approach Bias and Adolescent Alcohol Use.

We investigated the joint development between implicit approach bias and early adolescent alcohol use, and examined whether the link between approach bias and alcohol use was moderated by working memory (WM). The current study used data from a 2-year, 4-wave online sample of 378 Dutch early adolescents (mean age 14.9 years, 64.8% female). First, using latent growth curve modeling, we examined trajectories of approach bias and alcohol use over time. Second, we examined relations between baseline approach bias and WM and the development of alcohol use. Third, we examined the joint development of approach bias and alcohol use. Fourth, we examined whether the nature of this joint development varied for different levels of WM. Unconditional growth curve model analyses indicated that the functional forms of alcohol use and cognitive bias were best captured by quadratic and linear trajectories, respectively. We found that cognitive bias decreased over time. We found no significant relations between baseline predictors and observed increases in alcohol use. We found relations between the intercepts, but not to growth factors, in the joint development of alcohol use and approach bias. WM was not found to moderate relations between growth in approach bias and alcohol use in this sample. While we observed evidence of association between approach bias and alcohol use at baseline, there was no evidence of relations between development trajectories of the two. These findings replicate prior research demonstrating a role of implicit approach bias in predicting early adolescent alcohol use but do not demonstrate, in a light drinking early adolescent sample, the importance of interrelations between changes in approach bias and alcohol use over time, or a moderating role of WM. It is important to consider the potential consequences of repeated online approach bias assessment (e.g., changes in stimulus valence) when interpreting these results.