Nondrinking Days Research Articles

Prevalence and correlates of daily-level reasons not to drink among young adults who use alcohol.

This study examined reasons not to drink in young adults in relation to demographics, alcohol use patterns,timing (weekend vs. weekday), and typical drinking motives. Young adults who reported past 30-day alcohol use and at least one nondrinking day (n = 614; mean age = 21.5 years ±0.53) completed a survey of alcohol-related measures (e.g., typical drinking motives) and up to 14 daily surveys that included 12 reasons not to drink assessed on nondrinking days. Multilevel logistic regressions were estimated for each reason not to drink and related covariates. The most common reasons not to drink on a given day were "wasn't interested in drinking" (83.4% of nondrinking days) and "didn't want to get drunk" (81.8% of nondrinking days), with over 96% of participants endorsing each of these at least once. On days (11.6%; by 29.5% of participants) when another drug was used instead of alcohol, 81.8% used cannabis. Sex, race/ethnicity, weekend (vs. weekday), and drinking motives were differentially linked to reasons not to drink. Reporting high-intensity drinking (i.e., ≥10 drinking on a day) versus binge (5-9 drinks on a day) in the past 2 weeks was linked to "had a hangover recently" (odds ratio = 2.85) as a reason not to drink. Findings suggest that reasons not to drink reflect personal decisions and highlight ways to acknowledge situational barriers (e.g., saving money for food and essentials) that can be emphasized in brief interventions. Furthermore, reasons not to drink and alcohol motives may work in tandem within the motivational model to impact alcohol use behaviors.

Experimentally Induced Reductions in Alcohol Consumption and Brain, Cognitive, and Clinical Outcomes in Older Persons With and Those Without HIV Infection (30-Day Challenge Study): Protocol for a Nonrandomized Clinical Trial.

Both alcohol consumption and HIV infection are associated with worse brain, cognitive, and clinical outcomes in older adults. However, the extent to which brain and cognitive dysfunction is reversible with reduction or cessation of drinking is unknown. The 30-Day Challenge study was designed to determine whether reduction or cessation of drinking would be associated with improvements in cognition, reduction of systemic and brain inflammation, and improvement in HIV-related outcomes in adults with heavy drinking. The study design was a mechanistic experimental trial, in which all participants received an alcohol reduction intervention followed by repeated assessments of behavioral and clinical outcomes. Persons were eligible if they were 45 years of age or older, had weekly alcohol consumption of 21 or more drinks (men) or 14 or more drinks (women), and were not at high risk of alcohol withdrawal. After a baseline assessment, participants received an intervention consisting of contingency management (money for nondrinking days) for at least 30 days followed by a brief motivational interview. After this, participants could either resume drinking or not. Study questionnaires, neurocognitive assessments, neuroimaging, and blood, urine, and stool samples were collected at baseline, 30 days, 90 days, and 1 year after enrollment. We enrolled 57 persons with heavy drinking who initiated the contingency management protocol (mean age 56 years, SD 4.6 years; 63%, n=36 male, 77%, n=44 Black, and 58%, n=33 people with HIV) of whom 50 completed 30-day follow-up and 43 the 90-day follow-up. The planned study procedures were interrupted and modified due to the COVID-19 pandemic of 2020-2021. This was the first study seeking to assess changes in brain (neuroimaging) and cognition after alcohol intervention in nontreatment-seeking people with HIV together with people without HIV as controls. Study design strengths, limitations, and lessons for future study design considerations are discussed. Planned analyses are in progress, after which deidentified study data will be available for sharing. ClinicalTrials.gov NCT03353701; https://clinicaltrials.gov/study/NCT03353701. DERR1-10.2196/53684.

Feasibility and Acceptability of Using Ecological Momentary Assessment to Evaluate Alcohol Use with American Indian Women

Background: Ecological momentary assessments (EMA) are one way to collect timely and accurate alcohol use data, as they involve signaling participants via cell phones to report on daily behaviors in real-time and in a participant’s natural environment. EMA has never been used with American Indian populations to evaluate alcohol consumption. The purpose of this project was to determine the feasibility and acceptability of EMA for American Indian women. Methods: Eligible participants were American Indian women between the ages of 18 and 44 who were not pregnant and had consumed more than one drink within the past month. All participants received a TracFone and weekly automated messages. Self-reported measures of daily quantity and frequency of alcohol consumption, alcohol type, and context were assessed once per week for four weeks. Baseline measurements also included the Drinking Motives Questionnaire-Revised (DMQ-R) and the Interpersonal Support Evaluation List (ISEL). Results: Fifteen participants were enrolled in the study. All but one participant completed all data collection time points, and drinking patterns were consistent across the study period. A total of 420 records were completed across 86 drinking days and 334 non-drinking days. Participants reported drinking an average of 5.7 days over the 30-day period and typically consumed 3.99 drinks per drinking occasion. Sixty-six percent of participants met gender-specific cut-points for heavy episodic drinking, with an average of 2.46 binge drinking occasions across the four week study period. Conclusions: This proof-of-concept project showed that EMA was both feasible and acceptable for collecting alcohol data from American Indian women. Additional studies are necessary to fully implement EMA with American Indian women to better understand the drinking motives, contexts, patterns, and risk factors in this population.

Daily associations between affect, drinking motives, and drinking intensity among U.S. young adults.

We investigated the relationships between daily affect, drinking motives, likelihood of drinking, and intensity of drinking, particularly high-intensity drinking (HID), in a sample of young adults. We also explored differences in our outcomes before versus during the early coronavirus disease (COVID-19) pandemic. In the springs of 2019 and 2020, young adult drinkers (N = 633) completed 14 consecutive morning surveys (each year) characterizing the prior day's affect, motives, and alcohol use. We examined between-person and within-person associations of affect and motives with two outcomes: any drinking and drinking intensity on drinking days (1 = moderate drinking [1-3 drinks for women, 1-4 drinks for men], 2 = binge drinking [4-7 for women, 5-9 for men], and 3 = HID [8 + for women, 10 + for men]). Young adults reported higher positive affect on drinking days and higher negative affect on nondrinking days. On days when young adults reported greater enhancement motives, positive affect was strongly related to HID. During the early COVID-19 pandemic, young adults were more likely to report drinking, but did not drink more heavily unless they also reported drinking for social motives. These results suggest that heightened social, coping, and enhancement motives are risk factors for drinking in young adults. They also suggest that young adults perceive their mood to be better on drinking days, particularly when they were drinking to enhance positive affect. Results are consistent with a positive affect regulation model (i.e., drinking to increase positive affect), but not a negative affect regulation model (i.e., drinking to cope with negative affect). (PsycInfo Database Record (c) 2023 APA, all rights reserved).

Correspondence between alcohol use measured by a wrist-worn alcohol biosensor and self-report via ecological momentary assessment over a 2-week period.

Transdermal alcohol biosensors measure alcohol use continuously, passively, and non-invasively. There is little field research on the Skyn biosensor, a new-generation, wrist-worn transdermal alcohol biosensor, and little evaluation of its sensitivity and specificity and the day-level correspondence between transdermal alcohol concentration (TAC) and number of self-reported drinks. Participants (N=36; 61% male, M age =34.3) wore the Skyn biosensor and completed ecological momentary assessment (EMA) surveys about their alcohol use over 2 weeks. A total of 497 days of biosensor and EMA data were collected. Skyn-measured drinking episodes were defined by TAC > 5 μg/L. Skyn data were compared to self-reported drinking to calculate sensitivity and specificity (for drinking day vs. nondrinking day). Generalized estimating equations models were used to evaluate the correspondence between TAC features (peak TAC and TAC-area under the curve (AUC)) and number of drinks. Individual-level factors (sex, age, race/ethnicity, body mass index, human immunodeficiency virus status, and hazardous drinking) were examined to explore associations with TAC controlling for number of drinks. Using a minimum TAC threshold of 5 μg/L plus coder review, the biosensor had sensitivity of 54.7% and specificity of 94.6% for distinguishing drinking from nondrinking days. Without coder review, the sensitivity was 78.1% and the specificity was 55.2%. Peak TAC (β=0.92, p < 0.0001) and TAC-AUC (β=1.60, p < 0.0001) were significantly associated with number of drinks. Females had significantly higher TAC levels than males for the same number of drinks. Skyn-derived TAC can be used to measure alcohol use under naturalistic drinking conditions, additional research is needed to accurately identify drinking episodes based on Skyn TAC readings.

Effects of long‐term ethanol consumption on cognitive function in group‐housed monkeys

In the United States there are approximately 14.4 million adults diagnosed with alcohol use disorder (AUD). Despite this, there is an incomplete understanding of how chronic stress influences the development of AUD. Previous studies have shown that long‐term alcohol drinking negatively impacts cognitive flexibility (the ability to alter behavior in response to changing contingencies) and impulsive choice (the tendency to overvalue smaller, immediate rewards compared to larger, delayed rewards). However, the timing and extent of deficits that result from specific drinking patterns have not been well‐characterized. A better understanding of the progression of cognitive dysfunction is critical because deficits in these processes can perpetuate problematic alcohol use. In the present study, group‐housed adult male cynomolgus monkeys formed social hierarchies, which represent a continuum from environmental enrichment in high‐ranking (dominant; DOM; n=6) monkeys to chronic social stress in low‐ranking (subordinate; SUB; n=6) monkeys. Monkeys were trained to drink an unflavored 4% ethanol (EtOH) solution via schedule induction, then had access to self‐administer EtOH 22 hours/day, 4 days/week in the home cage (“free access”) while concurrently pressing a lever to deliver food pellets. To assess the effects of EtOH consumption on cognitive flexibility, monkeys performed a stimulus discrimination and reversal task (SD/SDR) on non‐drinking days using home cage touchscreen technology. Three stimuli appeared on the screen and the task ended when the monkey chose the correct stimulus on 18 of 20 consecutive trials. The task was administered just after induction and again after 6 months of free access. At this point, two modifications were made to increase task difficulty. First, two stimuli were added as additional distractors. In addition, the session was extended to 90 minutes and the total number of reversals was measured. We also characterized impulsive choice using a mean adjusted delay discounting task just after induction and after 4 months of free access. We hypothesized that subordinate monkeys would have greater EtOH intakes versus dominant monkeys and, as a result, would show greater cognitive dysfunction. As hypothesized, subordinate monkeys maintained greater (1.77 ± 0.95 g/kg) mean daily EtOH intakes compared to dominant monkeys (0.85 ± 0.91 g/kg) during 6 months of free access. However, there were no significant differences between dominant and subordinate monkeys in discrimination or reversal trials to criterion, or number of errors at baseline or after 6 months of free access using the 3‐stimuli SD/SDR task. There were also no rank‐related differences in these dependent variables (or number of reversals completed) when the task was modified to include 5 stimuli. Regarding the delay discounting task, both groups showed decreased impulsive choice from baseline to 4 months of free access, however the effect was lesser in subordinates. Although there are rank‐related differences in mean EtOH intake, monkeys do not appear to have significant EtOH‐induced deficits in these two domains of cognitive function in the present study. This study is ongoing and results following one year of access to EtOH will be assessed.

Bystander opportunity in situations of alcohol and violence risk: Exploring the feasibility of collecting daily diary data

Objective: One strategy to address the health issues among college students is through bystander intervention. However, much is still unknown about bystander behavior. The purpose of the current study was to assess the feasibility of daily diary methodology as applied to bystander opportunity. Method: Using a convenience sample, we examined (1) the frequency at which students encounter alcohol use risk and SDV risk bystander opportunities, and (2) the association between participants’ daily alcohol use and daily bystander opportunity. Participants were a small group of 32 college students (75% women; 100% heterosexual; 93.7% White; 6.3% multiracial; 3.1% Hispanic) who took up to nine daily diary surveys for a total of 207 days. Results: Over 80% of participants completed the required days. Participants experienced at least one bystander opportunity on 24% of days. Participants were significantly more likely to report an alcohol risk bystander opportunity on days when they drank alcohol, compared to non-drinking days.

Daily Patterns of Emotional Functioning on Drinking and Nondrinking Days.

Alcohol misuse continues to be a significant public health problem. Understanding the factors that may contribute to the harmful progression in drinking is an important aspect of public health. Previous research has shown that affect regulation is associated with problematic alcohol use. Additionally, emotion instability has been found as a predictor of alcohol-related problems and may be linked to reinforcement mechanisms. The current study examined positive mood, negative mood, and mood instability in real time across drinking and nondrinking days utilizing ecological momentary assessment (EMA). Current drinkers (n=74) were recruited for a 21-day EMA study. Participants completed up to 10 random assessments of positive mood, negative mood, and alcohol use per day. Mood instability was assessed as the squared difference in current mood from mood in the previous assessment. Data were analyzed using piecewise multilevel regression to examine mood trajectories across drinking and nondrinking days. Positive emotion across the day was higher on drinking days than nondrinking days and continued to increase after drinking initiation. In contrast, negative emotion across the day was lower on drinking days than nondrinking days and continued to decrease after drinking initiation. Emotional functioning was stable across the day on nondrinking days. However, on drinking days there was a steady increase in emotional instability leading up to drinking initiation, followed by a rapid stabilization after initiation. This study highlights the potentially reinforcing impact of alcohol via emotional stability. Overall, these findings highlight the importance of mood dynamics when examining the reinforcing effects of alcohol consumption.

In-Person Contacts and Their Relationship With Alcohol Consumption Among Young Adults With Hazardous Drinking During a Pandemic

PurposeSocial distancing strategies such as “stay-at-home” (SAH) orders can slow the transmission of contagious viruses like the SARS-CoV-2 virus, but require population adherence to be effective. This study explored adherence to SAH orders by young adults with hazardous drinking, and the role of alcohol consumption with in-person contacts on adherence. MethodsAnalyses included young adults with hazardous drinking (i.e., AUDIT-C score ≥3/4 for women/men; n = 50; ages 18–25) participating in a randomized trial in Pittsburgh, PA. Participants provided experience sampling reports on drinking twice per week from the week before SAH orders started on April 1, 2020 through 6 weeks during the SAH period. We examined how in-person contact with non-household friends changed over time and event-level relationships between alcohol consumption and in-person contacts. ResultsThe percentage of participants with any in-person contact in the week before SAH was 44% (95% confidence interval [CI] 30%–59%), which decreased to 29% (95% CI 15%–43%) in the first SAH week and increased to 65% (95% CI 46%–85%) by SAH week 6. Controlling for average levels of alcohol consumption, on days when young adults drank, participants reported more in-person contacts compared to nondrinking days. ConclusionsPreliminary data indicate that, among young adults with hazardous drinking, adherence to public policies like SAH orders is suboptimal, declines over time, and is associated with drinking events. Interventions aimed at enhancing young adults' adherence to social distancing policies are urgently needed.

Affect relative to day-level drinking initiation: Analyzing ecological momentary assessment data with multilevel spline modeling.

Affect regulation models state that affect both motivates and reinforces alcohol use. We aimed to examine whether affect levels and rates of change differed across drinking versus nondrinking days in a manner consistent with affect regulation models. Four hundred four regularly drinking adults, aged 18-70 years, completed ecological momentary assessments over 3 weeks. Participants provided positive affect (PA; enthusiastic, excited, happy) and negative affect (NA; distressed, sad) reports during all prompts; alcohol consumption reports were also provided. Multilevel spline models revealed that on drinking days, PA was higher and NA was lower both before and after drinking compared to matched times on nondrinking days. PA and NA were also higher and lower, respectively, both before and after drinking, when heavy drinking days were compared to moderate drinking days. Examination of affect rates of change revealed that (a) accelerating increases in PA and accelerating decreases in NA preceded drinking initiation, (b) PA increases and NA decreases were seen up to 2 hr after drinking initiation, and (c) pre- and postdrinking PA increases were larger on heavy versus moderate drinking days, whereas only postdrinking NA decreases were larger on heavy drinking days. Results supported affect regulation models while adding nuance, showing accelerating changes in predrinking affect on drinking days and pre- and postdrinking differences in affect levels and rates of change across days of varying drinking intensity. Beyond theory, our results suggest that accelerating changes in affect may provide a clue to future commencement of heavy drinking, which may aid momentary intervention development. (PsycInfo Database Record (c) 2020 APA, all rights reserved).

Drinking, Social Abstaining, and Refusing Invitations: Demographic Differences Persist Across College

Alcohol use and misuse are prevalent on many college campuses. The current study examined participation in college environments where alcohol is present and being consumed. We documented students' alcohol consumption, social abstaining (i.e., attending an alcohol-present event, but not drinking), and refusing invitations to drinking events. We tested for differences by parental education, immigrant status, race-ethnicity, and gender. We charted longitudinal change across college. First-year students attending a large public US university (n=681, 18% first-generation college student, 16% first-generation immigrant, 73% racial-ethnic minority group member, 51% women) were recruited and followed longitudinally for 7 semesters. Each semester, students completed up to 14 daily surveys; responses were aggregated to the semester level (n=4,267). Multilevel logistic regression models demonstrated that first-generation college students were less likely to drink and refuse invitations to drinking events than students with a college-educated parent (Adjusted Odds Ratios [AORs]: 0.66, 0.72, respectively). Similarly, first-generation immigrants were less likely to drink, socially abstain, and refuse invitations (AORs: 0.58 to 0.73). Compared with White students, Black and Asian American students were less likely to drink (AORs: 0.55, 0.53) and refuse invitations to drinking events (AORs: 0.68, 0.66). The proportion of days spent drinking increased across college, and refusing invitations was the most common at the start and end of college. First-generation college students, first-generation immigrant students, and Black and Asian students participated less in prodrinking environments during college. These findings indicate that on drinking and nondrinking days, students' participation in alcohol-present situations differed by background. Furthermore, our results indicate that the students who are most likely to refuse invitations to drinking events are the same students who drink most frequently.

Does it work and does it last? Effects of social and drinking behavior on same- and next-day mood

Both social and drinking behavior have the potential to modify mood. However, if social drinking enhances positive mood and reduces negative mood, as compared to non-drinking social behavior, then interventions to reinforce non-drinking via sober social activity are undermined. Using multilevel modeling analyses, we compared end-of-day mood on drinking days versus non-drinking days, and on days spent with other people as compared to days spent primarily alone. We evaluated the interaction between drinking/non-drinking and social/solitary behavior and assessed whether the effects of social and drinking behavior extended to mood the next day. Participants were 352 college students (53% female; 55% fraternity/sorority membership; mean age 19.7 years) who completed three automated telephone surveys each day during four 14-day intervals over 1 year. Drinking and being social were associated with higher end-of-day positive mood and significantly lower end-of-day negative mood. However, no positive enhancement or negative attenuation effects of alcohol were observed in interaction analyses. Alcohol provided no improvement in mood over-and-above being social at the end of the day or on the following day. However, drinking the previous day significantly reduced next-day positive mood, whereas being social significantly reduced next-day negative mood. These findings provide support for the reinforcing potential of interventions that increase rewarding social activity in the place of alcohol use.

Monitoring alcohol use in heavy drinking soup kitchen attendees.

Rates of heavy alcohol use in soup kitchen attendees range from 30% to 38%, but these data are based entirely on self-reported drinking. Little is known about the intensity or frequency of drinking in this population. We assessed alcohol use transdermally every 30min over a 3-week period among heavy drinkers who attended local soup kitchens. In addition to transdermal alcohol monitoring, participants were randomly assigned to daily breath alcohol monitoring with or without reinforcement for alcohol-negative breath samples (BrAC). Analyses assessed feasibility of transdermal monitoring and examined alcohol use based on BrAC, transdermal, and self-report data, as well as effect sizes for these metrics based on group assignment. Nineteen participants completed the 21-day monitoring period in full; three persons removed the anklet 3-16 days early due to hospitalization, impending hospitalization, or incarceration. Participants reported minimal impacts of the monitors, and severity ratings of side effects were mild. When using BrAC, transdermal, and self-report data, the percentage of non-drinking days was 93%, 58%, and 57%, and the longest duration of consecutive non-drinking days averaged 10.3, 7.2, and 5.7 days, respectively. About half of drinking days involved heavy drinking (5+drinks). Self-report and transdermal drinking days correlated significantly, p<.001, but neither index was associated with BrAC. Group comparisons indicate small-to-moderate sized effects of reinforcement compared to no reinforcement for increasing the proportion of alcohol-negative breath samples and durations of consecutive non-drinking samples during the study when BrAC was the metric. Transdermal data and self-report data indicated a more complex pattern. Reinforcement participants drank more often but at lower quantities than monitoring (control) participants per both transdermal and self-report data. These data suggest that transdermal monitors are well tolerated and document substantial heavy drinking in this population. Soup kitchens users are in need of alcohol interventions, and soup kitchens may represent a novel opportunistic setting for intervention delivery for an important and growing health disparities population.

Tension reduction and affect regulation: An examination of mood indices on drinking and non-drinking days among university student drinkers.

Several theories posit problematic alcohol use develops through mechanisms of positive and negative reinforcement. However, the literature on these mechanisms remains inconsistent. This may be due to a number of issues including a failure to disaggregate negative mood or a failure to account for mood functioning (i.e., stability in mood). Alternatively, there may be differences in typical postdrinking/evening mood on drinking and nondrinking days, however, this has yet to be fully explored. We examined multiple indices of distinct mood states prior to and after typical drinking onset times on drinking and nondrinking days using ecological momentary assessment. College student drinkers (n = 102) carried personal data devices for 15 days. They reported on mood and alcohol use several times per day. Tonic positive mood was higher on drinking days than nondrinking days prior to typical drinking initiation. After typical drinking times, positive mood was higher on drinking days than nondrinking days. Similarly, negative moods (anxiety, stress, anger, and stress instability) indicated a pattern of lower levels relative to both predrinking mood on drinking days, and matched mood time-points on nondrinking days; though, not all of these differences were statistically different. Results suggest positive and negative reinforcing mechanisms may be at play-though the negative reinforcement effects may manifest through subjectively "better" mood on drinking versus nondrinking days. (PsycINFO Database Record

A Daily Diary Study of Drinking and Nondrinking Days in Nonstudent Alcohol Users

ABSTRACTBackground: Emerging adults with lower educational attainment are at higher long-term risk for problematic drinking and alcohol use disorders. Efforts to gain a more in-depth understanding of the drinking habits of nonstudent emerging adults are critical to reduce disparities and to shed light on targets of intervention for this vulnerable group. Objectives: The current investigation aimed to: (1) provide a description of the daily drinking habits of nonstudent emerging adult drinkers using a 14-day diary method, and (2) examine nondrinking days by assessing their reasons for not drinking as well as strategies used to avoid drinking. Methods: Participants were 27 (55.5% women) emerging adult drinkers recruited from the community. Results: On drinking days, multilevel results indicated that heavier alcohol use was positively associated with level of subjective intoxication and alcohol-related problems. Men reported higher alcohol use outcomes than women across all alcohol use indicators. Regarding nonconsumptive days, the most frequently endorsed reasons for not drinking largely reflected an internal motivation, while the least endorsed reasons were related to external constraints. Pertaining to strategies used to avoid drinking, the most frequently endorsed response related to choosing alternative enjoyable activities. Diary compliance with the 14-day protocol was 90.9% for at least one daily survey. Conclusion/Importance: The present investigation represents one of the first to examine drinking behaviors using a daily diary approach with nonstudent emerging adult drinkers. Study findings filled an important gap regarding our understanding of the context of drinking of an at-risk and understudied group of drinkers.

Contextual influences on early drinking: Characteristics of drinking and nondrinking days.

Research characterizing the adolescent drinking context is limited, often relies on samples of current drinkers reporting on recent/last or typical drinking experiences, and provides little information about the context of very early use. The present study uses repeated monthly assessments to describe the context of drinking days and matched nondrinking days to determine the unique risk associated with different drinking-related characteristics. Additionally, we used latent class analysis to empirically identify key configurations of drinking-related characteristics and both family- and nonfamily-related environmental characteristics (social context, physical location, source of alcohol). Data included 688 days (344 drinking days, 344 nondrinking days) from 164 middle-school students enrolled in a prospective study on drinking initiation and progression (62% female; 26% non-White, 11% Hispanic). Results supported 4 patterns: (a) heavier drinking occurring in a peer context, lighter drinking occurring in (b) a family context or (c) a peer context, and (d) drinking alcohol obtained at home without permission. Latent classes varied as a function of gender, age, peer norms, and parenting behaviors as well as alcohol type and perceived alcohol availability. Findings indicated that highly endorsed contexts were not necessarily the riskiest ones, and simply targeting an oft-reported source of alcohol, physical location, or social context may not be an effective strategy for reducing underage drinking. Additionally, although greater monitoring and anticipated parent reaction to drinking are typically protective against adolescent drinking, we found they were associated with parent-sanctioned drinking, suggesting the role of parenting practices must be considered in the context of drinking pattern. (PsycINFO Database Record

Ecological evidence that affect and perceptions of drink effects depend on alcohol expectancies.

(1) To compare affective changes over drinking and non-drinking days among frequent drinkers and (2) to evaluate whether drinkers' expectations influence affective changes and perceived pleasure and relief from drinking. Observational study involving ecological momentary assessments collected via electronic diaries during the course of 3 weeks. Drinkers' usual settings in Columbia, MO, USA. A total of 400 adult, frequent drinkers, aged 18-70 years. Ecological assessments included morning reports, pre-drinking random prompts, user-initiated first-drink reports and device-prompted follow-ups over drinking episodes. Participants rated positive (enthusiastic, excited, happy) and negative (distressed, sad) affect and perceived pleasure and relief from drinking in real time. A self-report questionnaire completed at baseline evaluated expectancies for enhanced sociability and tension reduction from drinking. Relative to affective changes over non-drinking days, positive affect increased prior to drinking [95% confidence interval (CI) = 0.004, 0.023], and at first drink (95% CI = 0.238, 0.317), whereas negative affect decreased prior to drinking (95% CI = - 0.007, 0.000) and at first drink (95% CI = - 0.154, - 0.098). Sociability expectancies augmented increases in positive affect prior to drinking (95% CI = 0.009, 0.027) and at first drink (95% CI = 0.017, 0.169). Sociability expectancies also enhanced perceived pleasure from first drinks (95% CI = 0.046, 0.318). Tension-reduction expectancies attenuated decreases in negative affect at first drink (95% CI = - 0.133, - 0.029), but augmented perceived relief from first drinks (95% CI = 0.001, 0.304). Although theoretical models tend to focus on negative affective outcomes of drinking, changes in positive affect prior to drinking and early in drinking episodes are important for maintaining drinking behavior. Frequent drinkers' expectations for enhanced sociability or tension reduction from drinking influence their affective experiences over drinking days and perceptions of pleasure and relief from drinking.

The role of the working alliance in treatment for alcohol problems.

Little research has been done on the role of the therapeutic working alliance in treatment for alcohol problems. This longitudinal study’s objectives were (a) to identify predictors of working alliance and (b) to investigate whether client and/or therapist reports of the working alliance predicted posttreatment motivation and then later treatment outcome. Client and therapist perceptions of the working alliance were assessed after the first treatment session using a short form of the Working Alliance Inventory (WAI) among 173 clients taking part in the United Kingdom Alcohol Treatment Trial (UKATT) and randomized to motivational enhancement therapy (MET) or social behavior and network therapy (SBNT) with complete data on all measures of interest. Structural equation models were fitted to identify predictors of WAI scores and investigate the relationships between WAI and measures of drinking during treatment, posttreatment motivation, and successful treatment outcome (abstinent or nonproblem drinker), and measures of drinks per drinking day and nondrinking days, assessed 9 months after the conclusion of treatment. Motivation to change drinking when treatment began was a strong predictor of client—adjusted coefficient = 2.21 (95% confidence interval [CI] [0.36, 4.06]—but not therapist WAI. Client WAI predicted successful treatment outcome—adjusted odds ratios (OR) = 1.09 (95% CI [1.02, 1.17])—and had effects on drinking during treatment, and on posttreatment motivation to change. There was evidence for effect modification by treatment, with strong associations between WAI and posttreatment motivation, and evidence of WAI prediction of treatment outcomes in the MET group, but no evidence of associations for SBNT. Therapist WAI was not strongly associated with treatment outcome (adjusted OR = 1.05; 95% CI [0.99, 1.10]). The working alliance is important to treatment outcomes for alcohol problems, with client evaluation of the alliance strongly related to motivation to change drinking throughout treatment for MET. It was also much more important than therapist-rated alliance in this study.

The relationship between methamphetamine and alcohol use in a community sample of methamphetamine users

BackgroundWhile methamphetamine (MA) and alcohol are often used in combination, little is known about the pattern of co-use between these substances. The goal of the present study is to examine the relationship between MA use and alcohol use in a community sample of non-treatment seeking regular MA users. MethodsParticipants completed a face-to-face assessment battery, which included a diagnostic interview for MA dependence and the timeline follow-back interview for both alcohol and MA use over the past 30 days. Sixty regular MA and alcohol users supplied data for 1800 person-days. ResultsCompared with non-drinking days, drinking days and binge drinking days increased the odds of same day MA use by 4.22 and 4.50 times, respectively (p's<0.0001). Further, binge drinking incrementally increased risk for MA use above and beyond the effects of drinking itself (p<0.0001). Lagged models revealed previous day MA use to predict following day MA use (p<0.0001), yet, after controlling for this relationship, neither previous day alcohol use nor previous day binge drinking predicted following-day MA use. Finally, the effect of binge drinking on MA use was stronger among individuals with lower MA dependence severity or higher alcohol problem severity (p's<0.05). ConclusionsThese results suggest that alcohol and MA are co-used in predictable patterns, and in particular, that binge drinking may be incrementally associated with the likelihood of MA use. Future studies are needed to explore the temporal relationship between alcohol and MA use within a given episode.

Individual patterns of alcohol use

AimsWe present methodology to identify statistically distinct patterns of daily alcohol use and classify them into categories that could be further used in monitoring of transitions between patterns such as transitions from regular to problem use. DataThe study analyzed individual patterns of adult alcohol consumption from two datasets containing short (<6 month) and long (up to 2years) daily records of drinking. These data were collected over the period between 1999 and 2003. ResultsBy using a non-parametric (Kolmogorov–Smirnov) test we have identified distinct drinking patterns and classified them into 8 types according to their means, percentages of non-drinking days and variances of consumed amount during drinking days. For each studied individual we calculated a transition chart that characterizes transitions between the types. ConclusionsIndividual daily consumption patterns can be identified, and classified into distinct patterns. Changes between the patterns could be related to life events or environmental trends, and thus provide insights into pathways towards either heavier use or recovery.