Influence of anxious attachment on the relationship between primary emotions and substance-related addictive behaviors.

Objectives: To date there is no universally accepted model that describes the development of substance related addictive behavior. In order to address this gap, the study sought to examine whether the association between primary emotions and the inclination toward addictive behavior is mediated by an anxious attachment style. Methods: The total sample consisted of 900 German speaking non-clinical adults (age: M = 27; SD = 9.60; 71.6% female). Structural Equation Modeling (SEM) was applied to examine the connection between the primary emotions (SADNESS and ANGER), and the latent variables attachment anxiety and symptoms of addictive behavior. Results: Substance use symptomatology was correlated with higher attachment anxiety (r = 0.15), SADNESS (r = 0.15), and ANGER (r = 0.11). The effect of SADNESS on addictive behavior is mediated by attachment anxiety (p < 0.01) whereas ANGER had a direct effect on addictive behavior (p < 0.01). The final SEM explains 4% of the variance of addictive behaviors and 22% of attachment anxiety. Conclusion: Our findings suggest that both SADNESS and ANGER, along with attachment anxiety, are dispositions that contribute to the risk of engaging in addictive behavior. However, while ANGER directly influences addictive behavior, SADNESS acts through its impact on attachment anxiety.

Does smoking cessation reduce other substance use, psychiatric symptoms, and pain symptoms? Results from an emulated hypothetical randomized trial of US veterans.

BACKGROUND: Quitting smoking may lead to improvement in substance use, psychiatric symptoms, and pain, especially among high-risk populations who are more likely to experience comorbid conditions. However, causal inferences regarding smoking cessation and its subsequent benefits have been limited. METHODS: We emulated a hypothetical open-label randomized control trial of smoking cessation using longitudinal observational data of HIV-positive and HIV-negative US veterans from 2003-2015 in the Veterans Aging Cohort Study. We followed individuals from the first time they self-reported current cigarette smoking (baseline). We categorized participants as quitters or non-quitters at the first follow-up visit (approximately 1 year after baseline). Using inverse probability weighting to adjust for confounding and selection bias, we estimated odds ratios for improvement of co-occurring conditions (unhealthy alcohol use, cannabis use, illicit opioid use, cocaine use, depressive symptoms, anxiety symptoms, and pain symptoms) at second follow-up (approximately 2 years after baseline) for those who quit smoking compared to those who did not, among individuals who had the condition at baseline. RESULTS: Of 4,165 eligible individuals (i.e., current smokers at baseline), 419 reported no current smoking and 2,330 reported current smoking at the first follow-up. Adjusted odds ratios (95% confidence intervals) for associations between quitting smoking and improvement of each condition at second follow-up were: 2.10 (1.01, 4.35) for unhealthy alcohol use, 1.75 (1.00, 3.06) for cannabis use, 1.10 (0.58, 2.08) for illicit opioid use, and 2.25 (1.20, 4.24) for cocaine use, 0.78 (0.44, 1.38) for depressive symptoms, 0.93 (0.58, 1.49) for anxiety symptoms, and 1.31 (0.84, 2.06) for pain symptoms. CONCLUSIONS: While a causal interpretation of our findings may not be warranted, we found evidence for decreased substance use among veterans who quit cigarette smoking but none for the resolution of psychiatric conditions or pain symptoms. Findings suggest the need for additional resources combined with smoking cessation to reduce psychiatric and pain symptoms for high-risk populations.

[Stigma in homelessness and health care: reflections from a Housing First program in Barcelona, Spain]. / Estigma en personas sin hogar y atención en salud: reflexiones desde un programa Housing First en Barcelona, España.

The experience of homelessness is associated with strong stigmatization processes, which are often reflected in the treatment received from professionals and the healthcare system itself. This article aims to analyze the experiences of participants in a program for homeless individuals in Barcelona called Primer la Llar within the healthcare system, and how the stigma they suffer affects the care processes. This program follows the Housing First model, a social intervention that proposes providing housing without preconditions to individuals with long histories of street living, who suffer from severe mental disorders and/or addictions. Based on individual interviews with 20 participants conducted between 2016 and 2020, it is observed that in certain cases, entering the program, having housing availability, support from professionals, and the development of their own strategies had positive effects on improving their health, although they continue to perceive discriminatory attitudes in some medical settings. It is suggested that the transformation regarding stigmatization be understood broadly, affecting individuals, institutions, and society as a whole.

El tránsito por el sinhogarismo está asociado a procesos de fuerte estigmatización que, en muchas ocasiones, tienen su reflejo en el trato que reciben por parte de las y los profesionales y del propio sistema de atención en salud. Este artículo tiene como objetivo analizar las experiencias que tuvieron en el sistema sanitario las y los participantes de un programa para personas sin hogar en Barcelona llamado Primer la Llar, y cómo el estigma que sufren estas personas llega a condicionar los procesos de atención. Dicho programa sigue el modelo Housing First, una intervención social que propone la entrada a una vivienda sin condiciones previas a personas con largas trayectorias de vida en la calle, que sufren trastornos mentales graves y/o adicciones. A partir de entrevistas individuales con 20 participantes, realizadas entre 2016 y 2020, se observa que, en determinados casos, el ingreso en el programa, la disponibilidad de una vivienda, el soporte de profesionales y el desarrollo de estrategias propias tuvieron efectos positivos en la mejora de su salud, aunque continúan percibiendo actitudes discriminatorias en algunos espacios médicos. Se plantea la necesidad de que la transformación respecto a la estigmatización sea entendida en un sentido amplio, en las personas, en las instituciones y en la sociedad.

Her village: experiences of drug-involved women in a female-only aftercare program in the Philippines.

PURPOSE: Women are exposed to vulnerabilities that can lead to drug use or hinder recovery. However, there is a dearth of studies on recovery programs for women. This study aims to add to the literature by examining the feasibility of a women-only aftercare program for recovering users in the Philippines. DESIGN/METHODOLOGY/APPROACH: The study used a mixed-method design with pre and post-program surveys used to measure changes in participants' recovery capital. Focused group discussions elicited participants' context, their reactions, perceived outcomes and suggestions on the program. FINDINGS: Women in the program shared narratives of pain, trauma and abuse before treatment. Participants reported significant improvements in personal, community and family recovery capital dimensions. The program enabled personal growth in the form of new knowledge, skills and self-confidence. The women-only program also provided a safe space for women, to receive support from other women, community members and family. However, the women continue to face continuing challenges related to stigma and discrimination and a lack of livelihood opportunities. RESEARCH LIMITATIONS/IMPLICATIONS: A limitation of the study was its small sample size and the lack of a control group. Another limitation was the variability in treatment received by the women, which could have affected overall outcomes. Future studies using a randomized control trial and longitudinal designs may provide more robust conclusions on the effectiveness of the program. PRACTICAL IMPLICATIONS: Given punitive contexts, gender-sensitive and trauma-informed programs and services for women involved in drug use could potentially mitigate the abuse, stigma and vulnerabilities they experience. ORIGINALITY/VALUE: This study contributes to the sparse literature on women-only aftercare, particularly in countries that criminalize drug use.

Harm Reduction in Psychiatric Settings.

Public health announcements, the White House, and other government and private agencies have made progress in reducing the stigma associated with substance use disorders, and more Americans are seeking treatment. Yet only a small percentage of persons seeking treatment are receiving care. Many resources are now available to help nurse practitioners use a harm reduction approach to helping people understand their options and make choices. Harm reduction includes offering U.S. Food and Drug Administration-approved medications for treatment of tobacco use disorder, alcohol use disorder, and opioid use disorder. Drug mechanisms for acute and maintenance treatment are discussed. [Journal of Psychosocial Nursing and Mental Health Services, 62(7), 7-10.].

Mobile App Intervention to Reduce Substance Use, Gambling, and Digital Media Use in Vocational School Students: Exploratory Analysis of the Intervention Arm of a Randomized Controlled Trial.

BACKGROUND: During adolescence, substance use and digital media exposure usually peak and can become major health risks. Prevention activities are mainly implemented in the regular school setting, and youth outside this system are not reached. A mobile app ("Meine Zeit ohne") has been developed specifically for vocational students and encourages participants to voluntarily reduce or abstain from a self-chosen addictive behavior including the use of a substance, gambling, or a media-related habit such as gaming or social media use for 2 weeks. Results from a randomized study indicate a significant impact on health-promoting behavior change after using the app. This exploratory study focuses on the intervention arm of this study, focusing on acceptance and differential effectiveness. OBJECTIVE: The aims of this study were (1) to examine the characteristics of participants who used the app, (2) to explore the effectiveness of the mobile intervention depending on how the app was used and depending on participants' characteristics, and (3) to study how variations in app use were related to participants' baseline characteristics. METHODS: Log data from study participants in the intervention group were analyzed including the frequency of app use (in days), selection of a specific challenge, and personal relevance (ie, the user was above a predefined risk score for a certain addictive behavior) of challenge selection ("congruent use": eg, a smoker selected a challenge related to reducing or quitting smoking). Dichotomous outcomes (change vs no change) referred to past-month substance use, gambling, and media-related behaviors. The relationship between these variables was analyzed using binary, multilevel, mixed-effects logistic regression models. RESULTS: The intervention group consisted of 2367 vocational students, and 1458 (61.6%; mean age 19.0, SD 3.5 years; 830/1458, 56.9% male) of them provided full data. Of these 1458 students, 894 (61.3%) started a challenge and could be included in the analysis (mean 18.7, SD 3.5 years; 363/894, 40.6% female). Of these 894 students, 466 (52.1%) were considered frequent app users with more than 4 days of active use over the 2-week period. The challenge area most often chosen in the analyzed sample was related to social media use (332/894, 37.1%). A total of 407 (45.5%) of the 894 students selected a challenge in a behavioral domain of personal relevance. The effects of app use on outcomes were higher when the area of individual challenge choice was equal to the area of behavior change, challenge choice was related to a behavior of personal relevance, and the individual risk of engaging in different addictive behaviors was high. CONCLUSIONS: The domain-specific effectiveness of the program was confirmed with no spillover between behavioral domains. Effectiveness appeared to be dependent on app use and users' characteristics. TRIAL REGISTRATION: German Clinical Trials Register DRKS00023788; https://tinyurl.com/4pzpjkmj. INTERNATIONAL REGISTERED REPORT IDENTIFIER (IRRID): RR2-10.1186/s13063-022-06231-x.

Associations between mental health & substance use treatment and alcohol use progression and recovery among US women drinkers.

BACKGROUND: Alcohol use has profound public health impact on women; however, modifiable factors that may influence alcohol use progression/recovery, including health service utilization, are understudied in women. OBJECTIVE: To investigate the association between mental health (MH) and substance use (SU) treatment with alcohol use progression and recovery among women who currently use alcohol or have in the past. METHODS: This study is a secondary data analysis of prospective data from waves 1 (2001-2002) and 2 (2004-2005) of the National Epidemiologic Survey on Alcohol and Related Conditions (NESARC; a US-nationally representative sample of adults). The analytic sample was limited to women who reported past or current alcohol use at wave 1 (N = 15,515). Latent transition analysis (LTA) examined whether receiving SU/MH treatment in the year prior to wave 1 was associated with transitioning between three empirically-derived stages of alcohol involvement (no, moderate, and severe problems classes), between Waves 1 and 2 adjusting for possible confounders using propensity score weight. RESULTS: Compared to White female drinkers, female drinkers who were from Black, Hispanic, or other races were less likely to receive SU/MH treatment (p-values ≤. 001). SU/MH treatment in the year prior to wave 1 was associated with transitioning from the moderate problems class to the no problems class between Waves 1 and 2 (p-value = .04). CONCLUSION: Receipt of SU or MH treatment among women, was associated with a higher likelihood of remission from moderate alcohol use problems to no problems over time. Future research, including investigation into treatment characteristics (e.g., frequency, duration, type) should further explore why women initially experiencing severe alcohol use problems did not experience similar remission.

From traditional to transactional: exploration of khat use in Ethiopia through an interpretative phenomenological analysis.

Khat, a naturally growing stimulant, has seen a significant increase in both consumption and cultivation in eastern Ethiopia. This reliance on khat in the region comes despite its known physiological complications, with users unable to restrict khat use due to its pervasive impact on their livelihood. This qualitative study sought to understand the meaning that those in eastern Ethiopia attribute to khat and explore their firsthand experiences with the substance. In June and July of 2023, six unstructured interviews were conducted among residents of the Haramaya District in Ethiopia. To promote a holistic comprehension of the participants' lived experiences, an interpretative phenomenological analysis approach was employed when collecting and analyzing the data. Participant responses were coded independently from one another by two different researchers identifying superordinate and corresponding subordinate themes. Among the participants, six superordinate themes were captured: economic backbone of the region, market disruption & fluctuation, pesticide use, societal relationships around khat, applications of khat, and access to healthcare. The participants' responses indicated that the normalization of khat use, coupled with the downplaying of its addictive potential, has established a framework where khat consumption is not only allowed but, in some cases, even encouraged. The unique interplay between communal practice and individual preservation creates a cyclical effect of using khat to supplement energy to farm khat and then sell or stimulate further work on their farm. This study illuminates the transitionfrom what was once the traditional or spiritual use of khat, to a more practical use for ensuring economic livelihood.

[Risk factors and protective factors for substance abuse among adolescents].

The article presents a brief descriptive review aimed at identifying risk factors and protective factors of drug abuse among adolescents in three important areas - personality, family and society. Individual risk factors are described: high impulsivity, rebelliousness, violation of emotional balance, alexithymia. Family risk factors were prenatal smoking of the mother, and her poor psychological status, low education of parents, the presence of family members who use psychoactive substances. Among the risk factors in society was the presence of peers who abuse drugs in the environment of a teenager. Protective factors are also identified: individual optimism, the desire to preserve their health, etc.

[The impact of alcohol and other psychoactive substance use during the covid-19 pandemic: problems and consequences].

This article discusses issues related to the use of surfactants during the COVID-19 pandemic. The global nature of this crisis has had a significant impact on the lives of people around the world, including their mental health. The introduction of quarantine and «isolation¼ measures have become one of the measures to control the spread of the disease, but such restrictions have led to various adverse psychological reactions such as anxiety, depression, post-traumatic stress disorder, as well as cases of self-mutilation and even suicide. All of these factors can negatively affect other aspects of health and lead to increased use of alcohol and other psychoactive substances. Stress, social isolation, the unpredictability of the future, loss of a job or income - all these can be motivating factors for people to turn to alcohol or other substances in search of relaxation or emotional support. However, such strategies are short-term and irrational, since alcohol consumption only worsens the mental state and further increases the risk of developing mental problems.

Physician Reluctance to Intervene in Addiction: A Systematic Review.

Importance: The overdose epidemic continues in the US, with 107 941 overdose deaths in 2022 and countless lives affected by the addiction crisis. Although widespread efforts to train and support physicians to implement medications and other evidence-based substance use disorder interventions have been ongoing, adoption of these evidence-based practices (EBPs) by physicians remains low. Objective: To describe physician-reported reasons for reluctance to address substance use and addiction in their clinical practices using screening, treatment, harm reduction, or recovery support interventions. Data Sources: A literature search of PubMed, Embase, Scopus, medRxiv, and SSRN Medical Research Network was conducted and returned articles published from January 1, 1960, through October 5, 2021. Study Selection: Publications that included physicians, discussed substance use interventions, and presented data on reasons for reluctance to intervene in addiction were included. Data Extraction and Synthesis: Two reviewers (L.N., M.C., L.F., J.P., C.S., and S.W.) independently reviewed each publication; a third reviewer resolved discordant votes (M.C. and W.C.). This systematic review was conducted according to the Preferred Reporting Items for Systematic Reviews and Meta-analyses guidelines and the theoretical domains framework was used to systematically extract reluctance reasons. Main Outcomes and Measures: The primary outcome was reasons for physician reluctance to address substance use disorder. The association of reasons for reluctance with practice setting and drug type was also measured. Reasons and other variables were determined according to predefined criteria. Results: A total of 183 of 9308 returned studies reporting data collected from 66 732 physicians were included. Most studies reported survey data. Alcohol, nicotine, and opioids were the most often studied substances; screening and treatment were the most often studied interventions. The most common reluctance reasons were lack of institutional support (173 of 213 articles [81.2%]), knowledge (174 of 242 articles [71.9%]), skill (170 of 230 articles [73.9%]), and cognitive capacity (136 of 185 articles [73.5%]). Reimbursement concerns were also noted. Bivariate analysis revealed associations between these reasons and physician specialty, intervention type, and drug. Conclusions and Relevance: In this systematic review of reasons for physician reluctance to intervene in addiction, the most common reasons were lack of institutional support, knowledge, skill, and cognitive capacity. Targeting these reasons with education and training, policy development, and program implementation may improve adoption by physicians of EBPs for substance use and addiction care. Future studies of physician-reported reasons for reluctance to adopt EBPs may be improved through use of a theoretical framework and improved adherence to and reporting of survey development best practices; development of a validated survey instrument may further improve study results.

Reported Increase in Substance Use Following Mass Terrorism and the Role of Psychosocial Factors.

Importance: Research has shown evidence of increased substance use (ISU) in populations affected by mass terrorism; however, less is known regarding how psychosocial factors interact to estimate ISU following such events. Objective: To examine which factors are associated with reporting ISU, test whether psychological distress (PD) mediated the association between exposure to trauma and reporting ISU, and whether the mediation effect differed among those with prior mental health (MH) difficulties and those without. Design, Setting, and Participants: A partially representative cross-sectional survey of the adult Jewish population in Israel (aged 18-70 years) was conducted 4 weeks after October 7, 2023 (October 31 to November 5, 2023). A national Web panel using quotas based on national distributions was used. Randomly chosen adult Jewish members were invited to participate until a predetermined sample size was reached. Main Outcomes and Measures: The study measures included reporting ISU (outcome), PD (mediator), exposure to terror events and sociodemographic characteristics (variables), and prior MH difficulties (moderator). Hypotheses regarding outcome and variables were formulated before data collection. Results: A total of 7000 invitations were distributed, 2679 individuals consented, 1432 were excluded owing to quota limits, 74 failed attention tests, and 205 opted out, resulting in 968 participants (490 women [50.6%]; mean [SD] age, 41.5 [14.6] years). Hierarchical regression analysis revealed that participants were significantly more likely to report ISU if they had experienced direct exposure (odds ratio [OR], 5.75; 95% CI, 2.53 to 13.05), indirect exposure (OR, 1.84; 95% CI, 1.27 to 2.67), media exposure (OR, 1.22; 95% CI, 1.09 to 1.36), PD (OR, 1.80; 95% CI, 1.44 to 2.25), or previous MH difficulties (OR, 2.76; 95% CI, 1.86 to 4.09). PD partially mediated the association between indirect exposure (b = 0.20; 95% CI, 0.11 to 0.31) and media exposure (b = 0.14; 95% CI, 0.10 to 0.19) and reporting ISU. No evidence was found to support previous MH difficulties as a moderator of these indirect effects (indirect exposure, b = -0.003; 95% CI, -0.28 to 0.28; media exposure, b = 0.01; 95% CI, -0.06 to 0.08). Conclusions and Relevance: This study contributes to the research on the association of mass terrorism with ISU while shedding important light on the role it may play in the self-medication of PD following exposure, even in those who might have no previous MH difficulties. These insights are crucial for planning essential health services and preventive measures.

Predictors of drug and substance abuse among school-going adolescents living in drug hotspot in Malaysia.

This study explored the pressing issue of drug and substance abuse (DSA) among adolescents in drug hotspots in Malaysia. The Malaysian Anti-drug Agency (AADK) has identified 155 hotspot areas across Malaysia, of which 78 were randomly selected as the study sites. These areas were identified as having extreme drug-related activities such as drug trafficking and drug-related crimes. According to the literature, several factors influence adolescents to be involved in DSA. Therefore, understanding the risk factors in the context of Malaysian school-going adolescents is of utmost importance. The study examined, in particular, a wide range of potential predictors, including socioeconomic factors, peer influence, family dynamics, educational experiences, drug access, and community characteristics. Adolescents in the hotspot areas were selected by means of a cross-sectional survey design with a cluster sampling method. The sample comprised 3382 school-going adolescents, and the data were collected through face-to-face interviews. The logit model method with STATA software was used to analyse the data. The findings of the study revealed that school-going adolescents with disciplinary issues face a two-fold increase in the risk of becoming current drug users compared to their peers. Further, those exhibiting externalising behaviours, such as aggression and rule-breaking, also face greater odds of becoming involved in DSA. Drug pushers were identified as the most significant risk factor, with adolescents exposed to them being 46 times more likely to become current drug users. The factors of friends and family also contribute significantly to adolescent drug involvement. However, adolescents with academic-related issues may be less involved if they have the protective factor of better coping skills. These findings will contribute to efforts to mitigate drug addiction and drug-related activities, particularly in high-risk communities, as well as help policymakers and healthcare professionals develop targeted interventions and generally promote the well-being of adolescents.

"In Sweden you are worthless. In Denmark you get an identity again" - on being perceived and received as a person who uses drugs in different drug policy settings.

BACKGROUND: Policies to address substance use differ greatly between settings, where goals may range from zero-tolerance to harm reduction. Different approaches impact formats of care, policing, and even interpersonal interactions, and may play a role in the labelling and stigmatization of people who use drugs (PWUD). Where Sweden has a more restrictive policy, aiming to have a society free from drugs, Denmark has embraced harm reduction principles. The aim of this study was to explore PWUDs' experiences of interpersonal interactions, policing, and service formats in the two countries. METHODS: The data consists of 17 qualitative semi-structured interviews with Swedish PWUD who have been in both Sweden and Denmark. Recruitment took place at harm reduction sites in both countries, and through snowball sampling. RESULTS: Participants reflected on how they were perceived by those in public spaces, and received by care systems and personnel. In public settings in Sweden, participants felt they were ignored, rendered invisible, and lost their humanity. In Denmark, they were perceived and acknowledged, valued as people. This was simultaneously linked to being embodied by the availability of differing service offerings and policing practices, which solidified their "right to be out" in public. Reflecting on their reception in the treatment system, strict formatting in Sweden caused participants to feel that an identity was projected upon them, limiting their opportunities or growth of new facets of identity. Care relations in Denmark fostered more opportunity for autonomy and trust. CONCLUSION: A zero-tolerance policy and associated public discourses could solidify and universalize stigmatizing categorizations as a central feature of PWUD identity and reception from those around them, exacerbating social exclusion. Conversely, harm reduction-centered policies fostered positive interactions between individuals with care providers, public, and police, which may promote inclusion, empowerment, and wellbeing.

Web-Based Forums for People Experiencing Substance Use or Gambling Disorders: Scoping Review.

BACKGROUND: For people experiencing substance use or gambling disorders, web-based peer-supported forums are a space where they can share their experiences, gather around a collective goal, and find mutual support. Web-based peer support can help to overcome barriers to attending face-to-face meetings by enabling people experiencing addiction to seek support beyond their physical location and with the benefit of anonymity if desired. Understanding who participates in web-based peer-supported forums (and how), and the principles underpinning forums, can also assist those interested in designing or implementing similar platforms. OBJECTIVE: This study aims to review the literature on how people experiencing substance use or gambling disorders, and their family, friends, and supporters, use and participate in web-based peer-supported forums. Specifically, we asked the following research questions: (1) What are the characteristics of people who use web-based peer-supported substance use or gambling-focused forums? (2) How do people participate in web-based peer-supported forums? (3) What are the key principles reportedly underpinning the web-based peer-supported forums? (4) What are the reported outcomes of web-based peer-supported forums? METHODS: Inclusion criteria for our scoping review were peer-reviewed primary studies reporting on web-based addiction forums for adults and available in English. A primary search of 10 databases occurred in June 2021, with 2 subsequent citation searches of included studies in September 2022 and February 2024. RESULTS: Of the 14 included studies, the majority of web-based peer-supported forums reported were aimed specifically for, or largely used by, people experiencing alcohol problems. Results from the 9 studies that did report demographic data suggest forum users were typically women, aged between 40 years and early 50 years. Participation in web-based peer-supported forums was reported quantitatively and qualitatively. The forums reportedly were underpinned by a range of key principles, mostly mutual help approaches and recovery identity formation. Only 3 included studies reported on outcomes for forum users. CONCLUSIONS: Web-based peer-supported forums are used by people experiencing addiction in a number of ways, to share information and experiences, and give and receive support. Seeking web-based support offers an alternative approach to traditional face-to-face support options, and may reduce some barriers to engaging in peer support.

Human laboratory models of reward in substance use disorder.

Human laboratory models in substance use disorder provide a key intermediary step between highly controlled and mechanistically informative non-human preclinical methods and clinical trials conducted in human populations. Much like preclinical models, the variety of human laboratory methods provide insights into specific features of substance use disorder rather than modelling the diverse causes and consequences simultaneously in a single model. This narrative review provides a discussion of popular models of reward used in human laboratory research on substance use disorder with a focus on the specific contributions that each model has towards informing clinical outcomes (forward translation) and analogs within preclinical models (backward translation). Four core areas of human laboratory research are discussed: drug self-administration, subjective effects, behavioral economics, and cognitive and executive function. Discussion of common measures and models used, the features of substance use disorder that these methods are purported to evaluate, unique issues for measure validity and application, and translational links to preclinical models and special considerations for studies wishing to evaluate homology across species is provided.

Contextual and psychosocial factors influencing drug reward in humans: The importance of non-drug reinforcement.

The reinforcing efficacy, or behavior-strengthening effect, of a substance is a critical determinant of substance use typically quantified by measuring behavioral allocation to the substance under schedules of reinforcement with escalating response requirements. Although responses on these tasks are often used to indicate stable reinforcing effects or trait-level abuse potential for an individual, task designs often demonstrate within-person variability across varying degrees of a constraint within experimental procedures. As a result, quantifying behavioral allocation is an effective approach for measuring the impact of contextual and psychosocial factors on substance reward. We review studies using laboratory self-administration, behavioral economic purchase tasks, and ambulatory assessments to quantify the impact of various contextual and psychosocial factors on behavioral allocation toward consumption of a substance. We selected these assessment approaches because they cover the translational spectrum from experimental control to ecological relevance, with consistent support across these approaches representing greater confidence in the effect. Conceptually, we organized factors that influence substance value into two broad categories: factors that influence the cost/benefit ratio of the substance (social context, stress and affect, cue exposure), and factors that influence the cost/benefit ratio of an alternative (alternative non-drug reinforcers, alternative drug reinforcers, and opportunity costs). We conclude with an overview of future research directions and considerations for clinical application.