The effect of social investment on treatment outcome

AUD Risk, Diagnoses, and Course in a Prospective Study Across Two Generations: Implications for Prevention

This article is part of a Festschrift commemorating the 50th anniversary of the National Institute on Alcohol Abuse and Alcoholism (NIAAA). Established in 1970, first as part of the National Institute of Mental Health and later as an independent institute of the National Institutes of Health, NIAAA today is the world's largest funding agency for alcohol research. In addition to its own intramural research program, NIAAA supports the entire spectrum of innovative basic, translational, and clinical research to advance the diagnosis, prevention, and treatment of alcohol use disorder and alcohol-related problems. To celebrate the anniversary, NIAAA hosted a 2-day symposium, "Alcohol Across the Lifespan: 50 Years of Evidence-Based Diagnosis, Prevention, and Treatment Research," devoted to key topics within the field of alcohol research. This article is based on Dr. Schuckit's presentation at the event. NIAAA Director George F. Koob, Ph.D., serves as editor of the Festschrift.

An examination of abstinence social support among recovery home residents with psychiatric comorbidity

BACKGROUND

Although social support is a resource that helps persons in their recovery from substance use disorders, it is not clear whether specific types buffer the effects of stress and optimize outcomes for those with psychiatric comorbidity. This investigation examined two types of social support in relation to lengths of stay to identify mechanisms related to retention among individuals with psychiatric comorbidity living in community-based settings.

METHODS

Baseline rates of social support (abstinence specific and general types) and stress were examined in relation to follow-up lengths of stay (at four-months and beyond) among individuals (N = 368) with psychiatric comorbidity (n = 90) and no psychiatric comorbidity (n = 278) living in community-based settings (Oxford Houses) in the U.S. The psychiatric severity index of the Addiction Severity Index was used as a proxy measure of psychiatric comorbidity. Moderated mediation analyses were conducted to test the potential mediating effects of abstinence social support and general social support on the relationship between stress and lengths of stay, and whether these were influenced by psychiatric comorbidity.

RESULTS

A full mediating effect was observed for abstinence social support for residents with psychiatric comorbidity, whereas a partial mediating effect for general social support was observed for all residents.

CONCLUSIONS

Findings demonstrate qualities of social support have differential effects, substantiating the notion that specific components of social support optimize outcomes for those with psychiatric comorbidity living in recovery homes.

Recovery homes provide inexpensive and accessible community-based support

Substance abuse disorders (SUDs) create significant and pervasive health and economic burdens in the U.S. and the world. After primary treatment has ended, supportive social environments are critically important to prevent relapse and to sustain long-term sobriety. Although approaches to SUDs and treatment vary internationally, studies in the United States indicate that a major risk factor for SUD relapse are lack of social environments to support sustained remission from substance use after primary treatment has ended. Evidence suggests that abstinence is enhanced when individuals are embedded in drug-free settings that support abstinence. Longabaugh, Beattie, Noel, and Stout proposed a theory of social support that engages two processes: general social support, which affectspsychological functioning, and abstinence-specific social support, which supports ongoing abstinence from substance use.

Predictors of Increases in Alcohol Problems and Alcohol Use Disorders in Offspring in the San Diego Prospective Study

BACKGROUND

The 35-year-long San Diego Prospective Study documented 2-fold increases in alcohol problems and alcohol use disorders (AUDs) in young-adult drinking offspring compared to rates in their fathers, the original probands. The current analyses use the same interviews and questionnaires at about the same age in members of the 2 generations to explore multiple potential contributors to the generational differences in adverse alcohol outcomes.

METHODS

Using data from recent offspring interviews, multiple cross-generation differences in characteristics potentially related to alcohol problems were evaluated in 3 steps: first through direct comparisons across probands and offspring at about age 30; second by backward linear regression analyses of predictors of alcohol problems within each generation; and finally third through R-based bootstrapped linear regressions of differences in alcohol problems in randomly matched probands and offspring.

RESULTS

The analyses across the analytical approaches revealed 3 consistent predictors of higher alcohol problems in the second generation. These included the following: (i) a more robust relationship to alcohol problems for offspring with a low level of response to alcohol; (ii) higher offspring values for alcohol expectancies; and (iii) higher offspring impulsivity.

CONCLUSIONS

The availability of data across generations offered a unique perspective for studying characteristics that may have contributed to a general finding in the literature of substantial increases in alcohol problems and AUDs in recent generations. If replicated, these results could suggest approaches to be used by parents, healthcare workers, insurance companies, and industry in their efforts to mitigate the increasing rates of alcohol problems in younger generations.

The Role of Social Support in Motivating Reductions in Alcohol Use: A Test of Three Models of Social Support in Alcohol-Impaired Drivers

BACKGROUND

Social support has been linked to many therapeutic benefits (e.g., treatment retention, reduced posttreatment relapse) for individuals with alcohol use disorder. However, the positive impacts of social support have not been well understood in the context of alcohol-impaired driving. This article examines the role of social support in motivating those with histories of driving while intoxicated (DWI) arrest to reduce alcohol use by testing 3 major models of social support: the Main-Effects model, the Buffering model, and the Optimal Matching model.

METHODS

One hundred and nineteen participants with histories of DWI arrest were recruited from a correctional treatment facility (n = 59) and the local community (n = 60). Participants completed interviews to assess alcohol consumption, psychiatric/physical conditions, and psychosocial factors associated with drinking behavior (e.g., social support, alcohol-related problems, and motivation to change). Hierarchical regression analyses were conducted to test the 3 models. Additionally, the relative magnitude of the effects of general and recovery-specific social support was compared based on the approach of statistical inference of confidence intervals.

RESULTS

Overall social support was positively associated with some motivation to change (i.e., importance of change, confidence in change) among alcohol-impaired drivers, supporting the Main-Effects model. However, the impact of overall social support on motivation to change was not moderated by alcohol-related problems of individuals arrested for DWI, which did not confirm the Buffering model. Last, recovery-specific social support, rather than general social support, contributed to increasing motivation to reduce alcohol use, which supported the Optimal Matching model.

CONCLUSIONS

These findings highlight the benefits of social support (i.e., increased motivation to change alcohol use) for alcohol-impaired drivers. Regardless of the severity of alcohol-related problems of alcohol-impaired drivers, social support had direct positive impacts on motivation to change. In particular, the results underscore that social support can be more effective when it is matched to the recovery effort of individuals, which is consistent with the Optimal Matching model.

Simulating drinking in social networks to inform alcohol prevention and treatment efforts

Adolescent drinking influences, and is influenced by, peer alcohol use. Several efficacious adolescent alcohol interventions include elements aimed at reducing susceptibility to peer influence. Modeling these interventions within dynamically changing social networks may improve our understanding of how such interventions work and for whom they work best. We used stochastic actor-based models to simulate longitudinal drinking and friendship formation within social networks using parameters obtained from a meta-analysis of real-world 10th grade adolescent social networks. Levels of social influence (i.e., friends affecting changes in one's drinking) and social selection (i.e., drinking affecting changes in one's friendships) were manipulated at several levels, which directly impacted the degree of clustering in friendships based on similarity in drinking behavior. Midway through each simulation, one randomly selected heavy-drinking actor from each network received an "intervention" that either (a) reduced their susceptibility to social influence, (b) reduced their susceptibility to social selection, (c) eliminated a friendship with a heavy drinker, or (d) initiated a friendship with a nondrinker. Only the intervention that eliminated targeted actors' susceptibility to social influence consistently reduced that actor's drinking. Moreover, this was only effective in networks with social influence and social selection that were at higher levels than what was found in the real-world reference study. Social influence and social selection are dynamic processes that can lead to complex systems that may moderate the effectiveness of network-based interventions. Interventions that reduce susceptibility to social influence may be most effective among adolescents with high susceptibility to social influence and heavier-drinking friends. (PsycINFO Database Record

Long-term recall of social relationships related to addiction and HIV risk behaviors

BACKGROUND

Social relationships have been demonstrated as a key predictor of relapse among addicted persons and are likely to be important determinants of HIV risk behaviors also. However, the degree to which this population can reliably and consistently identify important people (IPs) in retrospect has been understudied.

METHODS

Using the modified Important People and Activities questionnaire, we investigated to what degree IPs were dropped, added, or retained, and whether data about individual IPs were reported accurately on 6- and 12-month follow up periods using a sample of 50 drug or alcohol abusing participants.

RESULTS

We found that IPs were largely retained, and that those retained versus dropped/added differed by their reaction to participant alcohol/drug use, as well as frequency of contact. We further found that there were differences in reliability of data describing specific IPs. While both 6- and 12-month follow up periods led to reliabilities ranging from excellent to fair, we found poorer reliability on responses to recall of "frequency of contact" and "reactions to drinking", as well as "reactions to drug use".

CONCLUSION

Future investigations of reliability of social relationships recalled retrospectively should attempt to examine possible systematic biases in addition to the reliability of specific IP data. More sophisticated studies are needed on factors associated with systematic variation in reporting of aspects of social relationships that are associated with addictions or HIV risk outcomes.

Abstinence Social Support Among Ex-Prisoners With Substance Use Disorders

The relationships between abstinence social support, substance use, and abstinence self-efficacy were examined among a sample of ex-prisoners exiting inpatient treatment for substance use disorders. Ordinary least squares regressions and bootstrapping procedure were used to test whether the relationship between abstinence social support and substance use would be mediated by abstinence self-efficacy. Significant relationships between variables were observed, and abstinence self-efficacy mediated the relationship between abstinence social support and substance use. Findings suggest that abstinence social support is enhanced by abstinence self-efficacy, and that these recovery resources can benefit persons with incarceration histories who have substance use disorders.

Briefer assessment of social network drinking: A test of the Important People Instrument-5 (IP-5)

The Important People instrument (IP; Longabaugh et al., 2010) is one of the most commonly used measures of social network drinking. Although its reliability and validity are well-supported, the length of the instrument may limit its use in many settings. The present study evaluated whether a briefer, 5-person version of the IP (IP-5) adequately reproduces scores from the full IP. College freshmen (N = 1,053) reported their own past-month drinking, alcohol-related consequences, and information about drinking in their close social networks at baseline and 1 year later. From this we derived network members' drinking frequency, percentage of drinkers, and percentage of heavy drinkers, assessed for up to 10 (full IP) or 5 (IP-5) network members. We first modeled the expected concordance between full-IP scores and scores from simulated shorter IP instruments by sampling smaller subsets of network members from full IP data. Then, using quasi-experimental methods, we administered the full IP and IP-5 and compared the 2 instruments' score distributions and concurrent and year-lagged associations with participants' alcohol consumption and consequences. Most of the full-IP variance was reproduced from simulated shorter versions of the IP (ICCs ≥ 0.80). The full IP and IP-5 yielded similar score distributions, concurrent associations with drinking (r = 0.22 to 0.52), and year-lagged associations with drinking. The IP-5 retains most of the information about social network drinking from the full IP. The shorter instrument may be useful in clinical and research settings that require frequent measure administration, yielding greater temporal resolution for monitoring social network drinking. (PsycINFO Database Record

Network Support II: Randomized controlled trial of Network Support treatment and cognitive behavioral therapy for alcohol use disorder

BACKGROUND

The social network of those treated for alcohol use disorder can play a significant role in subsequent drinking behavior, both for better and worse. Network Support treatment was devised to teach ways to reconstruct social networks so that they are more supportive of abstinence and less supportive of drinking. For many patients this may involve engagement with AA, but other strategies are also used.

PURPOSE

The current trial of Network Support treatment, building on our previous work, was intended to further enhance the ability of patients to construct abstinence-supportive social networks, and to test this approach against a strong control treatment.

METHODS

Patients were 193 men and women with alcohol use disorder recruited from the community and assigned to either 12 weeks of Network Support (NS) or Packaged Cognitive-Behavioral Treatment (PCBT), and followed for 27 months.

RESULTS

Results of multilevel analyses indicated that NS yielded better posttreatment results in terms of both proportion of days abstinent and drinking consequences, and equivalent improvements in 90-day abstinence, heavy drinking days and drinks per drinking day. Mediation analyses revealed that NS treatment effects were mediated by pre-post changes in abstinence self-efficacy and in social network variables, especially proportion of non-drinkers in the social network and attendance at Alcoholics Anonymous.

CONCLUSION

It was concluded that helping patients enhance their abstinent social network can be effective, and may provide a useful alternative or adjunctive approach to treatment.

Social Influences on Abstinence Self-Efficacy among Justice-Involved Persons

Social influences (social support for alcohol/drug use and social support for abstinence) were examined in relation to abstinence self-efficacy among a sample of 250 justice involved persons exiting inpatient treatment for substance use disorders. Hierarchical linear regression was used to examine social influences in relation to abstinence self-efficacy. Social influences were significantly related to abstinence self-efficacy when examined independently. However, only social support for alcohol/drug use was significant when both social influences were entered into the model. Findings suggest social support for alcohol/drug use compromises abstinence social support, particularly among justice involved persons who are early in their recovery from substance use disorders.

Interaction of Motivation and Social Support on Abstinence among Recovery Home Residents

BACKGROUND AND AIMS

The impetus to abstain from alcohol and drugs is especially robust when individuals seek help. However, motivation to continue abstinence during ongoing recovery is less understood. The present study assessed how social support interacted with motivation to affect abstinence over an 18-monthe time period.

METHODS

A sample of 289 residents entering residential recovery homes were recruited and followed at 6-, 12-, and 18-months. Motivation was measured as the perceived costs and benefits of abstinence. Five social influence measures were used to assess interactive effects with costs and benefits on abstinence.

RESULTS

Perceived costs and benefits of abstinence were robust predictors of abstinence over the 18 month assessment period. Two social support factors interacted with perceived benefits to influence abstinence: 12-step involvement and number of persons in the social network.

CONCLUSION

Suggestions are made for recovery services to influence perceived costs, benefits, and social network characteristics.

Adolescent social networks: general and smoking-specific characteristics associated with smoking

OBJECTIVE

Converging lines of research suggest that adolescents' smoking behaviors are strongly influenced by the characteristics of their social network and the social processes their network facilitates. The primary goal of this study was to conduct a detailed comparison of the social networks of adolescent smokers and nonsmokers to determine what aspects relate the most to smoking status. A secondary goal was to conduct within-group analyses to examine relationships between key measures of behavior-specific social support and (a) smoking susceptibility among nonsmokers, and (b) readiness to quit smoking among smokers.

METHOD

A matched sample of 190 adolescent smokers and nonsmokers (Mage = 16.8 years; 51% female) completed a questionnaire in which they nominated and reported on up to 10 important people in their lives. This measure allowed us to examine adolescents' overall networks (both peers and family) and to investigate numerous aspects, including general network characteristics (e.g., size of network, average contact with network members), social support (e.g., importance of people in the network), and the pervasiveness of smoking in the network (e.g., percentage of smoking peers).

RESULTS

The pervasiveness of smoking in adolescents' social network was the strongest distinguisher of smokers versus nonsmokers. In addition, behavior-specific social support was strongly associated with susceptibility to initiate smoking among nonsmokers and readiness to quit among smokers.

CONCLUSIONS

This research offers insight into potential targets for prevention and early intervention by demonstrating how social networks can both promote and attenuate risk for smoking.

Social Support and Treatment Outcome in Alcohol Dependence Syndrome in Armed Forces

INTRODUCTION

Social factors play vital role in unfolding of alcohol use disorders in any given population. Several factors beyond the confines of treatment settings influence treatment outcome in alcohol dependence syndrome. Social support has positive effect in treatment outcome of alcohol dependence syndrome. This has not been much studied in India in past. Therefore we decided to study the perception of social support in cases of alcohol dependence syndrome admitted in a busy hospital in armed forces.

AIM

The aim was to study the perception of social support across relapsed and abstinent group and see if it reached any statistical proportion and also to see if any socio-demographic variables also affected perception of social support.

MATERIALS AND METHODS

Fifty five consecutive male patients of alcohol dependent syndrome without a co-morbid neurological/psychiatric diagnosis were assessed for their perception of social support after taking informed consent. They were explained the procedure and their alcoholic milestones were recorded in specially designed pro-forma. Subjects were then divided in abstinent and relapsed group. Subsequently they were assessed for their perception of social support by administering Social provision scale and Social support questionnaire.

STATISTICAL ANALYSIS

Data were tabulated and statistically analysed by using chi square test, Mann Whitney U-Test and Rank ANOVA test where applicable p-value <.05 was taken as significant.

RESULTS

Results indicated that perception of social support across abstinent (n=18) and relapsed (n= 37) group reached significant statistical proportion as measured by social provision scale and social support questionnaire. Duration of use, dependence and family history of alcoholism did not influence perception of social support across patient population. There was inverse relationship between patients with alcohol related problem and their perception of social support. Professional and qualified soldiers perceived higher social support than soldiers and lesser qualified individuals.

CONCLUSION

Abstinent group perceived better social support than relapsed group and soldiers in upper socio-occupational status and less alcohol related problems perceived more social support than soldiers with lower socioeconomic status and more alcohol related problems. Psychosocial therapy must be incorporated in management of Alcohol dependence syndrome.

Recovery resources and psychiatric severity among persons with substance use disorders

A comparative analysis of recovery resources (abstinence social support, abstinence self-efficacy) was conducted among two groups exiting inpatient treatment for substance use disorders: persons with psychiatric comorbid substance use disorders and persons with substance use disorders. Both groups reported comparable levels of abstinence social support, but this resource was not significantly related to substance use among persons with psychiatric comorbid substance use disorders. Although abstinence self-efficacy was significantly related to substance use, persons with psychiatric comorbid substance use disorders reported significantly lower levels of abstinence self-efficacy than persons with substance use disorders. Findings suggest that persons with psychiatric comorbid substance use disorders exit alcohol/drug treatment with lower levels of abstinence self-efficacy compared to their substance use disorder peers.

Social Support Among Substance Using Women with Criminal Justice Involvement

Social support types (abstinence, appraisal, belonging, tangible) were analyzed among a sample of women with criminal justice involvement and substance use disorders (n = 200). Hierarchical linear regression was conducted to examine social support types in relation to changes in abstinence self-efficacy while controlling for incarceration histories. Only abstinence social support and tangible social support predicted significant increases in abstinence self-efficacy, with tangible support accounting for more variance in the analytic model. Findings suggest women with criminal justice involvement who have substance use disorders have basic needs that if met would have an indirect effect on their recovery. Implications for treatment and research are discussed.

“My actual mind and body is in a better place, I just feel better since coming here”: recovery and mental wellbeing

Purpose

– An increasing literature points to the efficacy and importance of mutual aid groups for people recovering from substance dependency. However, there is a paucity of qualitative evidence into the experiences and perceptions of service users attending UK-based mutual aid groups, and the implications they could have for recovery and mental wellbeing. The paper aims to discuss this issue.

Design/methodology/approach

– A phenomenological approach was chosen to explore the experiences and perceptions of service users and mentors at a mutual aid group in Leeds. Semi-structured interviews were conducted with service users and mentors (ex-service users) involved with the project. Thematic analysis was used to analyse the data.

Findings

– This paper focuses on the influence of mutual aid attendance on mental wellbeing. It was found that attendance seemed to have positive influences on providing structure, reducing stress and boredom, “broadening the mind” and providing service users with a social network that supported their recovery and mental wellbeing. However, it was also found that for those that have little outside the project, dependency on the group could develop, resulting in negative consequences on mental wellbeing.

Originality/value

– This paper provides an increased understanding of why mutual attendance has influences on mental wellbeing, as well as the implications such impacts have on recovery trajectories.

Factors affecting the stability of social networks during early recovery in ex-offenders

BACKGROUND

Few studies have considered the retention of the individuals (alters) comprising the social networks of people in recovery.

OBJECTIVE

The purpose of this study was to describe factors predicting whether alters were retained 6 months after participants completed treatment.

METHOD

The Important Person Inventory was given to 270 ex-offenders (224 men, 46 women) transitioning from treatment to Oxford House residences, Safe Haven therapeutic communities, or to usual aftercare. A 6-month follow-up was completed by 176 participants (137 men, 39 women).

RESULTS

We found that alters who were related to the participant, did not use drugs, were embedded in smaller networks, and had more frequent contact with the participant were significantly more likely to be retained as important people over 6 months. The alters' drinking and criminal history were not significantly predictive of retention in the network.

CONCLUSIONS

Certain characteristics of important people are related to their retention in a social network. Understanding these relationships and the extent to which the network change that occurs is aligned with abstinence-supporting networks is essential for creating effective social interventions for persons in recovery.

Sober-Living Houses and Changes in the Personal Networks of Individuals in Recovery

Social networks are an important source of support for many people in recovery from alcohol abuse. The present study investigated the role of one particular source of support for recovery in changing the personal networks of people in recovery, sober-living houses. In a randomized, longitudinal design changes in the network size, heterogeneity, and composition of usual aftercare and sober-living home residents were examined. Beneficial changes were found, such as increases in the number of recovering alcoholics and overall network size among sober-living home residents, particularly those who stayed six months or longer. Networks also became more homogeneous with respect to non-drinking among residents. The importance of changes in networks is discussed as well as the need for network-level analyses of personal recovery networks.

Comorbid mental health and substance abuse issues among individuals in recovery homes: Prospective environmental mediators

Individuals with comorbid internalizing psychological symptoms and substance abuse issues often have more negative outcomes and evidence a relative disparity in treatment gains compared to those with only substance abuse issues. The present study examined social mechanisms over time for individuals living in self-governed recovery homes (Oxford Houses) such as 12-step group activities and social support, which likely influence both abstinence and psychological outcomes. Participants (n = 567) from a national United States sample of Oxford Houses completed baseline and multiple follow-up self-report assessments over a one-year period. A structural equation model was utilized to evaluate predicted relationships among baseline symptoms, 12-step activities, social support, and outcome variables. Results indicated that internalizing symptoms were associated with subsequent mutual help activities, but not directly with social support. Living in an Oxford House for six months and number of 12-step meetings attended were partially mediated by social support variables in predicting abstinence outcomes, but not psychological outcomes. Environments such as Oxford Houses may be viable options for recovering individuals with comorbid internalizing psychological problems, although social support mechanisms primarily promote abstinence. Implications for future research and for Oxford House policies are discussed.

Gender and Social Pressure to Change Drinking Behavior: Results from the National Alcohol Surveys from 1984-2010

OBJECTIVE

Research shows social and institutional pressure influences drinking, yet determinants of who receives pressure are understudied. This paper examines age, time period, and birth cohort (APC) effects on pressure to stop or reduce drinking among U.S. men and women.

METHODS

Data were drawn from six National Alcohol Surveys (NAS) conducted from 1984 to 2010 (N=32,534). Receipt of pressure during the past year to quit or change drinking from formal (police, doctor, work) and informal (spouse, family, friends) sources was assessed.

RESULTS

Determinants of pressure were similar for men and women but varied in strength. They included younger age, less education, and younger cohort groups. Cohort effects were stronger for women than men.

CONCLUSIONS

Cohort effects among women may be due to increased alcohol marketing to younger women and the changing social contexts of their drinking. Future studies should assess associations between drinking contexts, pressures, and outcomes.

Age-based differences in treatment outcome among alcohol-dependent women

The literature suggests that women are at higher risk for negative consequences from alcohol use than men and that these risks are compounded by age. The current study investigated how alcohol-dependent women from different age groups might differ in terms of baseline functioning and treatment response. The sample consisted of 181 participants drawn from two randomized clinical trials of cognitive-behavioral treatments for alcohol-dependent women. Demographic and psychopathology data were obtained at baseline using the SCID (Structured Clinical Interview for DSM disorders) I for Axis I disorders and the SCID II or Personality Disorders Questionnaire for Axis II disorders. Social networks data were collected using the Important People and Activities Interview. Drinking data were collected at baseline and follow-up using the Timeline Follow Back Interview. ANOVAs revealed that older women had better psychosocial functioning in terms of being better educated and reporting fewer Axis I disorders. Also, older women had more supportive social networks in terms of more people, a smaller percentage of heavy drinkers, and a nondrinking spouse. Older women reported a less severe lifetime substance use history with a later age of first drink, later onset of alcohol use disorders, fewer lifetime abuse/dependence items, and less drug use. However, they reported drinking more frequently and more heavily over the 90 days prior to treatment. Finally, older women were more compliant with treatment and responded better by reducing drinking frequency and percentage of heavy drinking days. Suggestions to enhance treatment efficacy for younger women are made as well as suggestions for future research.

Sex differences in how a low sensitivity to alcohol relates to later heavy drinking

INTRODUCTION AND AIMS

A low level of response (LR), or low sensitivity, to alcohol is a genetically influenced characteristic that predicts future heavy drinking and alcohol problems. While previous analyses of how LR relates to heavier drinking reported the process is similar in males and females, some potential sex differences have been identified. This difference is further explored in these analyses.

DESIGN AND METHODS

Prospective structural equation models (SEMs) were evaluated for 183 young adult females and 162 males, none of Asian background, from the Collaborative Study on the Genetics of Alcoholism. Invariance analyses and SEM evaluations by sex were used to compare across females and males for these primarily Caucasian (75%), non-Asian young (mean age 19) subjects.

RESULTS

The prospective SEM for the full set of 345 subjects had good fit characteristics and explained 37% of the variance. While the initial invariance analyses identified few sex differences, comparisons of correlations and direct evaluations of path coefficients across males and females indicated that only females showed a link between a low LR and future alcohol problems that was partially mediated by more positive alcohol expectancies and drinking to cope. These sex differences were reflected in the different structures of the SEM results for female versus male subjects.

DISCUSSION AND CONCLUSIONS

These prospective results indicate that there might be some important sex differences regarding how a lower LR relates to alcohol outcomes that should be considered in protocols focusing on preventing the impact of LR on future drinking problems.

Testing a level of response to alcohol-based model of heavy drinking and alcohol problems in 1,905 17-year-olds

BACKGROUND

The low level of response (LR) to alcohol is one of several genetically influenced characteristics that increase the risk for heavy drinking and alcohol problems. Efforts to understand how LR operates through additional life influences have been carried out primarily in modest-sized U.S.-based samples with limited statistical power, raising questions about generalizability and about the importance of components with smaller effects. This study evaluates a full LR-based model of risk in a large sample of adolescents from the United Kingdom.

METHODS

Cross-sectional structural equation models were used for the approximate first half of the age 17 subjects assessed by the Avon Longitudinal Study of Parents and Children, generating data on 1,905 adolescents (mean age 17.8 years, 44.2% boys). LR was measured with the Self-Rating of the Effects of Alcohol Questionnaire, outcomes were based on drinking quantities and problems, and standardized questionnaires were used to evaluate peer substance use, alcohol expectancies, and using alcohol to cope with stress.

RESULTS

In this young and large U.K. sample, a low LR related to more adverse alcohol outcomes both directly and through partial mediation by all 3 additional key variables (peer substance use, expectancies, and coping). The models were similar in boys and girls.

CONCLUSIONS

These results confirm key elements of the hypothesized LR-based model in a large U.K. sample, supporting some generalizability beyond U.S. groups. They also indicate that with enough statistical power, multiple elements contribute to how LR relates to alcohol outcomes and reinforce the applicability of the model to both genders.

Twenty-one-year trends and correlates of pressure to change drinking

BACKGROUND

The vast majority of individuals with alcohol problems in the United States and elsewhere do not seek help. One policy response has been to encourage institutions such as criminal justice and social welfare systems to mandate treatment for individuals with alcohol problems (Addiction, 1997;92:1133). However, informal pressures to drink less from family and friends are far more common than institutional pressures mandating treatment (Addiction, 1996;91:643). The prevalence and correlates of these informal pressures have been minimally studied.

METHODS

This analysis used data from 5 Alcohol Research Group National Alcohol Surveys (NAS) collected at approximately 5-year intervals over a 21-year period (1984 to 2005, pooled N = 16,241) to describe the patterns of pressure that drinkers received during the past year from spouse, family, friends, physicians, police, and the workplace.

RESULTS

The overall trend of pressure combining all 6 sources across all 5 NAS data sets indicated a decline. Frequent heavy drinking and alcohol-related harms also declined, and both were strong predictors of receiving pressure. Trends among different sources varied. In multivariate regression models, pressure from friends showed an increase. Pressure from spouse and family showed a relatively flat trajectory, with the exception of a spike in pressure from family in 1990.

CONCLUSIONS

The trajectory of decreasing of pressure over time is most likely the result of decreases in heavy drinking and alcohol-related harm. Pressure was generally targeted toward higher risk drinkers, such as heavy drinkers and those reporting alcohol-related harm. However, demographic findings suggest that the social context of drinking might also be a determinant of receiving pressure. Additional studies should identify when pressure is associated with decreased drinking and increased help seeking.

Do social networks explain 12-step sponsorship effects? A prospective lagged mediation analysis

Sponsorship is a basic and important part of the 12-step approach to recovery from substance abuse (Alcoholics Anonymous, 2005) and research has shown that having a sponsor is associated with increased involvement in 12-step programs and improved outcomes (Bond, Kaskutas, & Weisner, 2003; Tonigan & Rice, 2010). However, little is known about how sponsorship improves outcomes. Given research demonstrating bivariate associations between sponsorship and social support for abstinence (Majer, Jason, Ferrari, Venable, & Olson, 2002), we hypothesized that the association between having a sponsor and increased abstinence outcomes would be explained by increases in one's abstinence-based social network. Prospective fully lagged mediational analyses did not support this hypothesis and these results ran counter to findings of five previous studies (cf. Groh, Jason, & Keys, 2008). A review of these studies showed that researchers often used cross-sectional or partially lagged methods to test mediation and the mediational effect of the social network was small in magnitude. Results suggest that the prospective association between sponsorship and abstinence is not explained by increases in the abstinence-based social network and demonstrate the need for future studies to use rigorous and time-lagged methods to test social support for abstinence as a mediator of the effects of 12-step involvement.

A prospective evaluation of how a low level of response to alcohol predicts later heavy drinking and alcohol problems

BACKGROUND AND OBJECTIVES

Evaluations of how a genetically influenced characteristic, such as the low level of response (a low LR) to alcohol, relates to later heavy drinking and alcohol problems usually include environmental contributors. The best way to understand how LR works in the context of these additional characteristics is to study the process prospectively, but such analyses tend to be complex and the papers are sometimes cluttered with jargon. This report attempts to offer a more straightforward description of the results from such a prospective model of how a lower LR at age 20 relates to alcohol outcomes at age 40.

METHODS

A structural equation model of LR at age ∼20, outcomes of heavy drinking and problems at age ∼40, and additional characteristics at age ∼35 were tested in 378 men from the San Diego Prospective Study.

RESULTS

The results support both direct effects of age-20 LR on age-40 heavy drinking and alcohol problems, as well as indirect effects of LR through characteristics of these men at age 35. The latter include using alcohol to cope with stress and heavier drinking among peers.

CONCLUSIONS

A low LR to alcohol is an example of how both genes and environment can contribute to the risk for adverse alcohol outcomes. The identification of mechanisms through which LR impacts on later heavy drinking and problems can be approached in cross-sectional studies, but those may not be as sensitive as longitudinal models for identifying additional potential mediators of the LR-to-outcome relationship.

Quality of life, needs, and interest among cocaine users: differences by cocaine use intensity and lifetime severity of addiction to cocaine

We examined the quality of life (QoL) of 149 patients who were recruited in 2005 at outpatient treatment centers for cocaine dependence in Spain. Important life areas and life areas with potential need and interest to change in order to improve the QoL were analyzed in terms of patients? cocaine use intensity within the previous six months and lifetime severity addiction to cocaine. The Spanish versions of the Drug User Quality of Life Scale and the Lifetime Severity Index for Cocaine were used to measure QoL, needs and interest, and severity addiction to cocaine. The data analysis employed t-tests, linear regression, Mann?Whitney U tests, multivariate regression, and chi-square tests. Tailoring treatment programs to address the life areas that are considered relevant to cocaine users considering their intensity of consumption and lifetime severity addiction to cocaine may improve retention and treatment outcomes. Further research needs to consider patients of different ethnic backgrounds and cultural contexts. The study's limitations are noted.

Network support as a prognostic indicator of drinking outcomes: the COMBINE Study

OBJECTIVE

To increase understanding of the interrelationship between a patient's social network and patient drinking, the Important People and Activities (IPA) instrument was developed. To meet the aims of the COMBINE (Combining Medications and Behavioral Interventions) Study, the IPA was modified to create the Important People Inventory (IPI), which was used to measure the contextual influence of the patient's social network on patient outcomes and treatment effects. The aims of the present article were to describe the IPI and its differences from the IPA and to test the relationship of network support as measured by the IPI in predicting drinking during and following treatment.

METHOD

Alcohol-dependent patients (N = 1,373) seeking outpatient treatment in the COMBINE randomized clinical trial were administered the IPI before treatment. Six network constructs were tested for predicting patient drinking.

RESULTS

As unique effects, alcohol-specific support, as measured by network drinking and opposition to patient drinking, is predictive of patient abstinent days during and following treatment and heavy drinking days following treatment. Other measures of network support have variable relationships to patient drinking at different phases: Some are predictive of patient drinking during treatment but diminish, whereas others are unrelated to drinking during treatment but become increasingly predictive of drinking as time from treatment increases.

CONCLUSIONS

The IPI is a useful instrument for describing network support of alcohol-use disorder patients entering treatment. Measures of alcohol-specific support are prognostic of drinking outcomes. The patient's network support should be systematically assessed prior to tailored treatment planning.

An Exploratory Analysis of Changes in Self-Regulation and Social Support Among Men and Women in Recovery

The present study examined the association between changes in self-regulation and measures of general and specific social support that occurred across an 8 month interval among adults (n = 469: 317 men, 152 women; M age = 39.0 years) with histories of substance abuse. Participants resided in communal living, democratically governed, abstinent homes (n = 143) located across the United States. Participants' self-regulation scores, on average, increased over the 8 month period and the self-regulation change scores were significantly related to general social support. In addition, self-regulation score changes were associated with the participant's social network's support for drinking where greater support for drinking was accompanied by larger self-regulation increases. These findings augment research on multi-factor support theories and changes in self-regulation.

Comparing structural equation models that use different measures of the level of response to alcohol

BACKGROUND

The two measures of a low level of response (LR) to alcohol, an alcohol challenge and the retrospective Self-Report of the Effects of Alcohol questionnaire (SRE), each identify individuals at high risk for heavy drinking and alcohol problems. These measures also perform similarly in identifying subjects with unique functional brain imaging characteristics. However, few data are available regarding whether alcohol challenge-based and SRE-based LRs operate similarly in structural equation models (SEMs) that search for characteristics, which help to mediate how LR impacts alcohol outcomes.

METHODS

Two hundred and ninety-four men from the San Diego Prospective Study were evaluated for their LR to alcohol using alcohol challenges at approximately age 20. At approximately age 35, the same subjects filled out the SRE regarding the number of drinks needed for effects 15 to 20 years earlier. The two different LR scores for these men were used in SEM analyses evaluating how LR relates to future heavy drinking and to drinking in peers (PEER), alcohol expectancies (EXPECT), and drinking to cope (COPE) as potential mediators of the LR to drinking pattern (ALCOUT) relationships.

RESULTS

While the 2 LR measures that were determined 15 years apart related to each other at a modest level (r = 0.17, p < 0.01), the SEM results were similar regardless of the LR source. In both alcohol challenge-based and SRE-based LR models, LR related directly to ALCOUT, with partial mediation from PEER and COPE, but not through EXPECT in these 35-year-old men.

CONCLUSIONS

Consistent with the >60% overlap in prediction of outcomes for the 2 LR measures, and with results from functional brain imaging, alcohol challenge- and SRE-based LR values operated similarly in SEM models in these men.

Changing network support for drinking: network support project 2-year follow-up

The Network Support Project was designed to determine whether a treatment could lead patients to change their social network from one that supports drinking to one that supports sobriety. This study reports 2-year posttreatment outcomes. Alcohol-dependent men and women (N = 210) were randomly assigned to 1 of 3 outpatient treatment conditions: network support (NS), network support + contingency management (NS + CM), or case management (CaseM, a control condition). Analysis of drinking rates indicated that the NS condition yielded up to 20% more days abstinent than the other conditions at 2 years posttreatment. NS treatment also resulted in greater increases at 15 months in social network support for abstinence, as well as in AA attendance and AA involvement than did the other conditions. Latent growth modeling suggested that social network changes were accompanied by increases in self-efficacy and coping that were strongly predictive of long-term drinking outcomes. The findings indicate that a network support treatment can effect long-term adaptive changes in drinkers' social networks and that these changes contribute to improved drinking outcomes in the long term.

Emphasizing interpersonal factors: an extension of the Witkiewitz and Marlatt relapse model

AIM

Recently, Witkiewitz & Marlatt reformulated the Marlatt & Gordon relapse model to account for current research findings. The present paper aims to extend this model further to incorporate social variables more fully.

METHODS

The social-factors and alcohol-relapse literatures were reviewed within the framework of the reformulated relapse model.

RESULTS

The literature review found that the number of social network members, investment of the individual in the social network, levels of general and alcohol-specific support available within the social network and specific behaviors of network members all predict drinking outcomes. However, little is known about the mechanisms by which these social variables influence outcomes. The authors postulate that social variables influence outcomes by affecting intra-individual factors central to the reformulated relapse prevention model, including processes (e.g. self-efficacy, outcome expectancies, craving, motivation, negative affective states) and behaviors (e.g. coping and substance use). The authors suggest specific hypotheses and discuss methods that can be used to study the impact of social factors on the intra-individual phenomena that contribute to relapse.

CONCLUSION

The proposed extension of the relapse model provides testable hypotheses that may guide future alcohol-relapse research.

An evaluation of the full level of response to alcohol model of heavy drinking and problems in COGA offspring

OBJECTIVE

The low level of response (LR) to alcohol is an endophenotype related to heavier drinking and alcohol problems. Structural equation models (SEMs) indicate LR affects alcohol outcomes (ALCOUT) both directly and through mediation by drinking in peers (PEER), alcohol expectancies (EXPECT), and drinking to cope with stress (COPE), with some variation depending on the sample tested. This article presents the first full test of this LR-based model in young subjects from the Collaborative Study on the Genetics of Alcoholism (COGA).

METHOD

Data were generated from 325 12- to 22-year-old (47.4% male) drinking offspring from COGA families, using the Self-Report of the Effects of Alcohol questionnaire to determine LR early in the drinking career and a validated, structured interview for demography and alcohol use/problem patterns. Standardized questionnaires were used to measure PEER, EXPECT, and COPE, with the model tested through the maximum likelihood estimation for analyses of the variance/covariance matrix using both Amos and Mplus.

RESULTS

The SEM yielded good fit characteristics and explained 59% of the variance, with LR relating both directly to ALCOUT and as partially mediated by PEER and COPE. Although GENDER related to both LR and ALCOUT in the model, and AGE related to ALCOUT, the SEM results were invariant across both AGE and GENDER, with generally similar invariant results regarding the presence or absence of an alcohol-use disorder diagnosis.

CONCLUSIONS

The results support the applicability of the LR-based model of heavy drinking and alcohol problems in the COGA offspring, a group with different demography compared with the two other samples of adolescents tested to date. The modest differences observed across samples will be evaluated in future research to enhance understanding of how the model operates across socioeconomic groups.

The performance of elements of a 'level of response to alcohol'-based model of drinking behaviors in 13-year-olds

AIM

The goals of this paper are to evaluate whether drinking practices among peers mediates the relationship between a low level of response (LR) to alcohol and a person's heavier drinking and alcohol-related problems in 12-14-year-olds.

DESIGN

Correlations and structural equation models (SEM) were used to test a hypothesized model of the relationships among key variables in adolescents from the Avon Longitudinal Study of Parents and Children (ALSPAC), a longitudinal birth cohort study in Bristol, England.

PARTICIPANTS

These included 688 boys (40.4%) and girls who were offspring of the pregnant women who had been selected as ALSPAC participants in 1991 and 1992. The offspring were interviewed at about age 13 years, and those who had ever consumed a full drink completed the Self-Report of the Effects of Alcohol (SRE) questionnaire indicating the number of drinks required for up to four effects early in their drinking histories. A higher number of drinks required for effects indicated a low LR per drink consumed.

FINDINGS

The SEM explained 58% of the variance of the alcohol pattern, and had good fit characteristics. A low LR was related to heavier drinking and more alcohol problems both directly and as mediated partially by drinking in peers. The model performed well across the narrow age range, and applied equally well in boys and girls.

CONCLUSIONS

The perceived drinking practices of peers is a potentially important mediator of how a low LR to alcohol relates to drinking practices during early adolescence. The findings may be useful in developing approaches to prevent heavier drinking in this young group.

Social support and cognitive impairment in clients receiving treatment for alcohol- and drug-use disorders: a replication study

OBJECTIVE

The influence that social network members exert on the drinking behaviors of alcohol-dependent individuals may represent a behavioral change process that is sensitive to co-occurring cognitive impairment and operates outside treatment to promote or impede outcomes. This study was aimed at extending earlier research support for this hypothesis by assessing impairment in memory as well as executive functions in a more heterogeneous population with alcohol- and/or drug-use disorders.

METHOD

Latent class analysis was used as a person-centered approach to characterize the nature and extent of social support for abstinence from alcohol and drug use in 122 men and women entering treatment for substance-use disorders. Substance use, executive dysfunction, and memory impairments were compared across latent classes at four points during the first year after treatment entry. The interrelationship of impairment and social support on treatment outcomes was also examined.

RESULTS

Three independent social support classes--(1) Frequent Positive Support, (2) Limited Positive Support, and (3) Negative Support--were identified. The Frequent Positive Support class demonstrated the most frequent substance use and greatest executive impairment at treatment entry but-by the end of treatment-showed pronounced improvements in both. In addition, less recovery of executive function by the end of treatment predicted better 12-month substance-use outcomes in the Frequent Positive Support class, whereas it predicted poorer outcomes in the Negative Support class.

CONCLUSIONS

The results offer further evidence for the heightened importance of informal social network processes in the treatment outcomes of persons with severe and ongoing deficits in executive functioning.

12-step participation among dually-diagnosed individuals: a review of individual and contextual factors

The frequent co-occurrence of substance abuse disorders along with psychiatric disorders creates a number of complexities and needs in terms of long-term treatment for individuals. 12-step groups might provide unique mechanisms by which dually-diagnosed individuals can maintain their abstinence and improve their psychological functioning. This paper reviews the literature on outpatient community 12-step participation among dually-diagnosed individuals, and also focuses on individual factors that may interact with treatment: homelessness, legal status, and ethnicity. A total of 59 articles was included in the review, with an emphasis on these individual factors and findings regarding mechanisms of action. Overall, findings from the studies reviewed suggest a general benefit of 12-step participation across these individual factors and some potential for dual-focus 12-step programs for dually-diagnosed individuals via social support and self-efficacy. However, methodological limitations and lack of research in the area of ethnicity limited some of the conclusions that can be made. Suggestions for further research are discussed.

Level of response to alcohol within the context of alcohol-related domains: an examination of longitudinal approaches assessing changes over time

BACKGROUND

The manner in which a low level of response (LR) to alcohol relates to domains that enhance the risk for heavy drinking has traditionally been studied through cross-sectional models. However, many of the relevant domains, such as the maximum number of drinks consumed in 24 hours (MAXDRINK) and drinking among peers (PEER) typically decrease across adulthood. This study evaluated whether a person's LR to alcohol predicted alcohol-related domains at multiple time-points and examined longitudinal relations among these domains in a sample of probands from the San Diego Prospective Study.

METHODS

LR to alcohol was assessed in 174 male probands from the San Diego Prospective Study at baseline (T1), and measures of MAXDRINK, PEER, and drinking to cope (COPE) were collected at the 15-year (T15), T20, and T25 follow-ups.

RESULTS

A low LR to alcohol at T1 predicted higher levels of MAXDRINK and COPE at T15, consistent with prior studies. Using latent growth curve models, higher levels of T15 MAXDRINK predicted less decreases in PEER drinking over time. Additional analyses found a time-specific effect of T20 COPE on T25 MAXDRINK even after accounting for the growth factors of both domains.

CONCLUSION

These evaluations illustrate that LR prospectively predicted relevant outcomes, and clarify how alcohol-related domains related to each other as the probands progressed through middle adulthood. Treatment implications are discussed and drinking to cope may be an important intervention target for problematic alcohol use.

Network support for drinking: an application of multiple groups growth mixture modeling to examine client-treatment matching

OBJECTIVE

The current study re-examined the Project MATCH (Matching Alcoholism Treatments to Client Heterogeneity) hypothesis that individuals with high network support for drinking would have the best treatment outcomes if they were assigned to twelve-step facilitation (TSF).

METHOD

Drinking consequences, as measured by the Drinking Inventory of Consequences, was the primary outcome measure. Growth mixture models with multiple groups were used to estimate the drinking consequence trajectories of 952 outpatients during the 12 months following treatment for each of the three Project MATCH treatment conditions. Growth factors within latent trajectory classes were regressed on network support for drinking to assess whether treatment condition moderated the relationship between network support for drinking and drinking consequences over time.

RESULTS

Three latent classes were identified, representing low (n = 154, 16.2%), medium (n = 400, 42%), and high (n = 398, 41.8%) levels of drinking consequences. Classes did not differ across treatment groups. Greater network support for drinking predicted more drinking consequences over time but only for clients assigned to cognitive-behavioral therapy and motivational enhancement therapy, not TSF.

CONCLUSIONS

This study provides further support for one of the original Project MATCH matching hypotheses: Clients with social networks supportive of drinking had better outcomes immediately after treatment if they were assigned to TSF. Because the original Project MATCH studies found this matching effect only at the 3-year follow-up, these results add validity to the network support for drinking matching effect. The study also provides additional evidence that accounting for heterogeneity in alcohol treatment outcomes is important for accurately estimating treatment effectiveness.

Social networks and their influence on drinking behaviors: differences related to cognitive impairment in clients receiving alcoholism treatment

OBJECTIVE

Mechanisms of behavioral change that support positive addiction treatment outcomes in individuals with co-occurring alcohol-use disorders and cognitive impairment remain largely unknown. This article combines person- and variable-centered approaches to examine the interrelated influence of cognitive impairment and social support on stability of and changes in drinking behaviors of Project MATCH (Matching Alcoholism Treatments to Client Heterogeneity) outpatients and aftercare clients (N = 1,726) during the first year after their entry into treatment.

METHOD

Latent class analysis identified homogeneous groups of clients based on the nature and extent of social support for abstinence or drinking at treatment entry. Cognitive impairment and drinking outcomes were compared across latent classes, and the interaction between impairment and social support on drinking outcomes was examined using mixture probit regression.

RESULTS

Three independent social support classes (frequent positive, limited positive, and negative) were identified. In the outpatient sample, the frequent positive support class had greater cognitive impairment at treatment entry versus other classes, and extent of impairment significantly predicted improved drinking outcomes in this class. In the aftercare sample, the frequent positive and negative support classes had heightened impairment, yet cognitive impairment significantly predicted relatively poorer drinking outcomes in the negative support class only.

CONCLUSIONS

Cognitive impairment may increase the influence of the social network on the drinking outcomes of persons receiving treatment for alcohol-use disorders, but more research is needed to understand client characteristics that determine whether this influence is more likely to be manifest as increased salience of helping agents or of hindering agents in the social network.

Social network variables in alcoholics anonymous: a literature review

Alcoholics Anonymous (AA) is the most commonly used program for substance abuse recovery and one of the few models to demonstrate positive abstinence outcomes. Although little is known regarding the underlying mechanisms that make this program effective, one frequently cited aspect is social support. In order to gain insight into the processes at work in AA, this paper reviewed 24 papers examining the relationship between AA and social network variables. Various types of social support were included in the review such as structural support, functional support, general support, alcohol-specific support, and recovery helping. Overall, this review found that AA involvement is related to a variety of positive qualitative and quantitative changes in social support networks. Although AA had the greatest impact on friend networks, it had less influence on networks consisting of family members or others. In addition, support from others in AA was found to be of great value to recovery, and individuals with harmful social networks supportive of drinking actually benefited the most from AA involvement. Furthermore, social support variables consistently mediated AA's impact on abstinence, suggesting that social support is a mechanism in the effectiveness of AA in promoting a sober lifestyle. Recommendations are made for future research and clinical practice.

Theory-based processes that promote the remission of substance use disorders

Four related theories about the personal and social resources that shield individuals from developing substance use disorders and foster the process of remission from these disorders are described. These theories are social control theory, behavioral economics and behavioral choice theory, social learning theory, and stress and coping theory. Next, the social processes specified by these theories are highlighted, including the provision of support, goal direction, and monitoring; engagement in rewarding activities other than substance use, exposure to abstinence-oriented norms and models, and attempts to build self-efficacy and coping skills. Then, a review of the literature considers evidence about the association between the personal and social resources specified by the four theories and remission from substance use disorders. The discussion highlights several issues that need to be addressed to enhance our understanding of the protective resources involved in stable remission, such as how to develop integrated measures of the key resources and specify their associations with substance use outcomes, the extent to which the resources amplify or compensate for the influence of treatment, and how treatment and continuing care can be tailored to strengthen the protective resources that promote remission.

A factor analysis of the important people inventory

AIMS

For well over a decade, the Important People Inventory (IP, Clifford and Longabaugh, 1991; Clifford et al., 1992) has been used to collect a wide range of valuable information regarding network support for alcohol use. However, because of psychometric limitations and varied adaptations of the IP, the following study performed factor analyses to develop a more structurally consistent model of the scaleas compared to the existing model.

METHODS

A first principal components analysis (Varimax rotation) was run on the indices of the IP using data from a national investigation of residents within a recovery community (N=897). Next, a second principal components analysis was run using data collected from participants recruited from inpatient treatment settings (N=150).

RESULTS

Results indicated a nine-index, three-factor model, which explained about two thirds of the common variance. These three factors included: Support for Drinking from Network Members (3 items), Drinking Behaviours of Network Members (3 items), and General Social Support (3 items).

CONCLUSIONS

Results of both studies suggest that the IP fits a multi-component structure. It is recommended that Drinking Behaviours of Network Members be examined for predictive validity and that General Social Support be removed from the scale or have additional items added.