Minimizing measurement error in treatment outcome estimates: A meta-analysis comparing estimates between the gambling timeline followback and other self-report assessments of gambling behavior.

OBJECTIVE: The aim of the current meta-analysis was to examine potential differences in posttreatment effect size estimates for gambling frequency (i.e., the number of days gambled) and gambling expenditure (i.e., the amount of money gambled) when using the gambling timeline followback (G-TLFB) versus other self-report assessments. METHOD: Using an open-access meta-analysis database of studies on cognitive behavioral treatment for gambling disorder, 22 studies representing 2,824 participants were identified for inclusion. Hedges's g effect sizes representing posttreatment differences on gambling frequency and expenditure between cognitive behavioral treatment versus inactive and minimal treatment controls were calculated, and mixed-effect subgroup analyses examined the effect sizes for each outcome between studies using the G-TLFB versus other self-report assessments. RESULTS: Mixed-effect subgroup analyses indicated that the effect size for gambling frequency was significantly lower for studies using the G-TLFB (g = -0.15) than studies using other self-report assessments (g = -0.71). When examining whether the use of the G-TLFB was associated with the posttreatment effect size for gambling frequency in a random-effect metaregression model that controlled for study grant funding status, the use of the G-TLFB was not significantly associated with effect size. The effect size for gambling expenditure was not significantly different between studies using the G-TLFB (g = -0.22) versus studies using other self-report assessments (g = -0.38). CONCLUSIONS: The G-TLFB yields more conservative and precise effect size estimates of posttreatment gambling frequency, but not gambling expenditure, than other self-report assessments. (PsycInfo Database Record (c) 2024 APA, all rights reserved).

Expectations of How Acute Cannabis Use Affects Gambling Experiences and Behaviors.

Emerging research shows that many individuals commonly consume cannabis while gambling. However, individuals' expectations for how cannabis consumption will impact their gambling behavior remain unknown. Participants who gambled weekly (N = 472) were recruited from Amazon Mechanical Turk and completed assessments of gambling behaviors, cannabis consumption, and expectations about the influence of cannabis on gambling. Almost all participants (94%) screened positive for problem gambling. Over half of participants (55%) reported lifetime cannabis consumption, and almost all those participants (99%) reported gambling under the influence of cannabis (GUIC) in the past month. Most participants agreed with positive expectations of gambling; they expected that they would feel calmer when under the influence of cannabis (61.4%), that gambling would be more enjoyable (61.0%), and that their gambling skills would increase when GUIC (60.6%). At the same time, most participants also agreed with negative expectations of GUIC. They expected cannabis use would make them more careless (56.4%), more anxious (54.8%), and less able to concentrate (53.7%) while gambling. Negative cannabis expectancies were significantly associated with the severity of cannabis consumption. Both positive and negative cannabis expectancies were significantly associated with gambling problems and time spent gambling under the influence of cannabis. These findings indicate that expectations may influence the decision to consume cannabis and gamble simultaneously. This study contributes to the need for addressing cannabis expectations during treatment of gambling problems.

We Might Have a Sports Gambling Problem and It Is Not What You Think: A Commentary.

The 2018 Supreme Court decision on Murphy v. National Collegiate Athletic Association brought not only a change in the United States commercial gambling landscape, but also considerable speculation across public forums about whether expanded sports gambling causes new, distinct, and greater harm than existing legal forms of gambling. This commentary brings into the focus that the definition of this form of gambling has recently begun to shift without a theoretical basis or empirical evidence. To bring evidence to bear, there is a need for a precise operational definition of sport gambling and greatly clarity to the questions that can drive knowledge generation.

Behavioral Addiction from the Asian Americans Perspective: Exploration of Public and Help-Seeking Stigma.

Asian Americans have been unlikely to seek mental health services despite their needs for treatment, particularly when experiencing significant gambling or Internet gaming problems. Stigma is often considered to be a barrier to seeking help. To understand how stigma impacts Asian Americans' willingness to seek mental health services, the present study used an online survey to investigate the public stigma associated with addictive behaviors and help-seeking stigma among Asian Americans. Participants (N = 431) who self-identified as Asian American, reside in the US. Using a between-groups vignette study design, it was found that the individual with a behavioral addiction received more stigma compared to the individual who experienced a financial crisis. In addition, participants were more likely to seek help if they experienced addictive behavioral problems rather than financial problems. Lastly, this study did not reveal a significant relation between public stigma attached to addictive behaviors and Asian Americans' willingness to seek help, but it found that participants' willingness to seek help was positively associated with public stigma of help seeking (ß = 0.23) and negatively associated with self-stigma attached to help-seeking (ß = - 0.09). Based on these findings, recommendations are provided to inform community outreach to reduce stigma and promote mental health service utilization among Asian Americans.

The Influence of Gambling on Mood State and Alcohol Cravings.

Several decades of research have experimentally investigated the influence of alcohol on gambling. However, there has been only minimal experimental exploration of how gambling influences alcohol use. The aim of the current project was to evaluate how gambling influenced mood state and alcohol cravings through randomized experimental design when analyzed with comparison conditions.College students (N = 76) who reported regular alcohol use, gambling within the past year, and being college basketball fans were randomly assigned to watch a video of an exciting basketball game, watch a nondysphoric basketball game, watch a movie, or engage in slot machine gambling. Participants who watched exciting sports or engaged in gambling to reported more energized mood states and higher urges to drink compared to those who watched nondysphoric sports or a movie. These results suggest that the context of gambling may prime individuals to want to consume alcohol.

Cognitive-behavioral treatment for gambling harm: Umbrella review and meta-analysis.

The aim of the current umbrella review and meta-analysis was to evaluate the methodological rigor of existing meta-analyses on cognitive-behavioral treatment (CBT) for gambling harm. The Cochrane Database of Systematic Reviews, PsycINFO, and PubMed were searched for meta-analyses of CBT for gambling harm among individuals aged 18 years and older. The search yielded five meta-analyses that met inclusion criteria, representing 56 unique studies and 5389 participants. The methodological rigor for one meta-analyses was rated high, two were moderate, and two were critically low. Including only moderate- to high-quality meta-analyses, a robust variance estimation meta-analysis indicated that CBT significantly reduced gambling disorder severity (g = -0.91), gambling frequency (g = -0.52), and gambling intensity (g = -0.32) relative to minimal and no treatment control at posttreatment, suggesting 65%-82% of participants receiving CBT will show greater reductions in these outcomes than minimal or no treatment controls. Overall, there is strong evidence for CBT in reducing gambling harm and gambling behavior, and this evidence provides individuals, clinicians, managed care companies, and policymakers with clear recommendations about treatment selection.

Contrasting the Effects of Alcohol and Alcohol Expectancies on Gambling Behavior.

The influence of alcohol on risk-taking may be through both pharmacological action and individual expectancies. A recent meta-analysis highlighted the need for evidence about the precise role of alcohol expectations on individuals' gambling behavior while under the influence of alcohol and a need to understand what specific gambling behaviors are influenced. This laboratory study investigated the effects of alcohol consumption and alcohol expectancies on gambling behavior in a sample of young adult men. Thirty-nine participants were randomly assigned to one of three experimental conditions in which they consumed alcohol, alcohol-placebo, or no-alcohol beverages and then played a computerized roulette game. The roulette game provided each participant with the same pattern of wins and losses and recorded gambling behavior including wagers made, number of spins, and final dollar amount remaining. Significant main effects were found between conditions on total number of spins with the alcohol and alcohol-placebo groups gambling significantly more than the no-alcohol group. The alcohol and alcohol-placebo groups were not statistically different. These findings support that individuals' expectations play an important role in understanding the effects of alcohol consumption on gambling; this effect may be primarily associated with persistence in wagering.

Effect of cognitive-behavioral techniques for problem gambling and gambling disorder: A systematic review and meta-analysis.

AIMS: To measure the effect of cognitive-behavioral techniques (CBTs) on gambling disorder severity and gambling behavior at post-treatment and follow-up. METHOD: Seven databases and two clinical trial registries were searched to identify peer-reviewed studies and unpublished studies of randomized controlled trials. The Cochrane Risk of Bias tool assessed risk of bias in the included studies. A random effect meta-analysis with robust variance estimation was conducted to measure the effect of CBTs relative to minimally treated or no treatment control groups. RESULTS: Twenty-nine studies representing 3991 participants were identified. CBTs significantly reduced gambling disorder severity (g = -1.14, 95% CI = -1.68, -0.60, 95% prediction interval [PI] = -2.97, 0.69), gambling frequency (g = -0.54, 95% CI = -0.80, -0.27, 95% PI = -1.48, 0.40) and gambling intensity (g = -0.32, 95% CI = -0.51, -0.13, 95% PI = -0.76, 0.12) at post-treatment relative to control. CBTs had no significant effect on follow-up outcomes. Analyses supported the presence of publication bias and high heterogeneity in effect size estimates. CONCLUSIONS: Cognitive-behavioral techniques are a promising treatment for reducing gambling disorder and gambling behavior; however, the effect of cognitive-behavioral techniques on gambling disorder severity and gambling frequency and intensity at post-treatment is overestimated, and cognitive-behavioral techniques may not be reliably efficacious for all individuals seeking treatment for problem gambling and gambling disorder.

Effects of cognitive behavioral techniques for gambling on recovery defined by gambling, psychological functioning, and quality of life: A systematic review and meta-analysis.

OBJECTIVE: Individuals who experience gambling harms report that sustained recovery involves changing both gambling behaviors and psychological symptoms, as well as building a meaningful life. However, there is limited understanding about the effect of cognitive behavioral (CB) techniques on psychological symptoms and quality of life. The purpose of the present study was to examine the effect of CB techniques for gambling-related harms on broader recovery outcomes such as psychological symptoms and quality of life. METHOD: A systematic article search was conducted to identify randomized controlled trials of CB techniques with nonactive and minimal treatment control groups that assessed psychological symptoms or quality of life as outcomes. Random-effects meta-analysis was used to examine the effect of CB techniques relative to nonactive and minimal treatment control groups. RESULTS: A total of nine studies representing 658 participants were included. Eight studies reported outcomes on depression and anxiety, three on substance use, and six on quality of life. CB techniques significantly reduced anxiety (g = -0.44) and depression (g = -0.35) at posttreatment, but not substance use. CB techniques also significantly increased quality of life at posttreatment (g = 0.40). There was a large amount of heterogeneity suggesting the magnitude of effects could vary significantly in future randomized trials. CONCLUSIONS: Future studies should examine the longitudinal associations between gambling harms, psychological symptoms, and quality of life and to assess whether changes in gambling harms throughout treatment precede or are a consequence of changes in psychological symptoms and quality of life. (PsycInfo Database Record (c) 2023 APA, all rights reserved).

The Influence of Alcohol Consumption on Gambling: Do the Laboratory Study Findings Generalize to Natural Environments?

A recent meta-analysis of laboratory studies on the effects of acute alcohol consumption on risk-taking did not support that acute alcohol consumption increased risk-taking. Questions about whether this finding generalizes to those gambling in naturalistic settings remain. Therefore, we examined the gambling behavior of frequent gamblers who did and did not consume alcohol while gambling. Participants were 769 weekly gamblers (66% male) who were U.S. residents and at least 18 years old. Participants recruited via MTurk completed measures through the Qualtrics survey platform. Significant predictors of gambling under the influence of alcohol were drinking days per month and PGSI score. A linear regression model predicting percentage of time spent gambling under the influence of alcohol revealed that gambling days per week, gambling hours per day, PGSI score, and drinking days per month were significant predictors. Finally, significant predictors of spending at least 50% of gambling time gambling under the influence of alcohol included: gambling hours per day, PGSI score, and drinking days per month. These findings were consistent with the recent meta-analysis of laboratory studies. However, finding that gambling disorder symptoms and overall rates of alcohol consumption were related to gambling under the influence of alcohol replicated the frequently found relation of alcohol problems among those who also exhibit gambling problems.

Does acute alcohol consumption increase risk-taking while gambling? A systematic review and meta-analysis.

AIMS: To estimate the effect of acute alcohol consumption on risk-taking while gambling, examine blood alcohol concentration as a moderator and explore possible moderators of this effect. DESIGN, SETTING AND PARTICIPANTS: A systematic review and meta-analysis was completed. A Boolean search strategy was used to identify studies that included (a) alcohol consumption as an independent variable; (b) a gambling or risk-taking task; (c) a control or placebo comparison; (d) human participants; and (e) English publications. Descriptive information, sample characteristics and experimental data were extracted from each study. Searched databases included: PsycINFO, Web of Science, Medline, Cochrane Library and ProQuest Dissertations and Theses. Included as participants were experiments that compared the effects of alcohol and non-alcoholic or placebo beverages on risk-taking while gambling. MEASUREMENT: Comprehensive Meta-Analysis version 3.3.070 was used. Standardized mean differences of risk-taking while gambling between the experimental and control conditions were calculated when studies did not report effect sizes. Random-effects models were used for overall effect and meta-regressions while mixed-effects models were used for subgroup analyses. FINDINGS: Twenty articles containing 47 alcohol versus control comparisons met inclusion criteria. The overall Hedges'g for the difference between groups consuming alcohol and groups consuming a placebo or non-alcoholic drink control was 0.03, 95% confidence interval (CI) = -0.07, 0.12, p = 0.60, indicating no significant difference. Larger effect sizes were found for studies using non-alcoholic control drinks (Hedges' g = 0.30, 95% CI = 0.01, 0.58) compared to placebo beverages (Hedges' g = -0.03, 95% CI = -0.13, 0.06), Cochran's Q = 4.67, p = 0.03. CONCLUSIONS: Finding that acute alcohol consumption had no reliable effect on risk-taking while gambling was consistent with existing animal research. No support was found for the relation between alcohol dose and risk-taking. The significantly larger effect size for experiments using non-alcoholic versus placebo beverages suggests the potential role of expectancy effects.

Text Comprehension Analyses to Improve Assessment Accuracy: Demonstration Using Gambling Disorder Screening.

Many individuals diagnosed with an addictive disorder are members of disadvantaged groups and obtain a high school education or less, yet self-report questionnaires widely used to identify symptoms of addictive disorders do not use best practices to ensure item clarity and comprehension. In the present study, we explore how advanced text-analysis technology can be used to guide the development of a diagnostic questionnaire with an emphasis on maximizing its readability and then test the accuracy of this questionnaire. In Study 1, a self-report questionnaire for symptoms of gambling disorder was created using best practices for item clarity and comprehension. In study 2 an experimental design was used to test whether the measure with enhanced readability, compared to a commonly used screening instrument, improved diagnostic symptom accuracy among samples of high school and college educated individuals. Subsequent analyses revealed that education was positively related to item comprehension, and participants who completed the maximized readability questionnaire correctly identified more symptoms of gambling disorder than participants who completed the comparison questionnaire, regardless of educational attainment. These studies indicate that the rate at which individuals accurately identify symptoms of psychopathology is strongly related to their educational attainment and the readability of the questionnaire items themselves.

Dropout from face-to-face, multi-session psychological treatments for problem and disordered gambling: A systematic review and meta-analysis.

OBJECTIVE: The aims of this systematic review and meta-analysis were to examine the overall prevalence of dropout from psychological treatments for problem gambling and gambling disorder and to examine how study, client, and treatment variables influenced dropout rates. METHOD: A systematic search was conducted to identify studies of cognitive and/or behavioral therapies and motivational interventions for problem gambling and gambling disorder. Meta-analysis was used to calculate an overall weighted dropout rate. Random effect meta-regressions were used to examine covariates of dropout rates. Mixed-effect subgroup analyses were used to examine moderators of dropout rates. RESULTS: The systematic search identified 24 studies (31 dropout rates) comprising 2,791 participants. Using a random-effects model, the overall weighted dropout rate was 39.1%, 95% CI [33.0%, 45.6%]. Increases in the percentage of married participants were significantly associated with lower dropout rates. Dropout rates were significantly higher when dropout was defined as attending all sessions of a treatment protocol compared to when defined as attending a prespecified number of sessions different from the total in the protocol and when defined as study therapists judging participants to be dropouts. Insufficient reporting of some gambling-related variables and other psychological symptom variables prevented a thorough examination of covariates and moderators. CONCLUSIONS: A large proportion of individuals drop out of treatment for problem gambling and gambling disorder. Future research should examine the reasons for dropout across marital statuses and should adopt dropout definitions that consider session-by-session symptom change. (PsycInfo Database Record (c) 2021 APA, all rights reserved).

Frequent Gamblers' Reasons for and Against Completing a Problem Gambling Screener.

Problem gambling screeners are easily accessible and potentially reduce harm for those individuals who engage in risky levels of gambling behavior. However, a recent study found that when frequent gamblers were offered the chance to complete a screener and receive feedback, most chose not to do so. In this paper, secondary analysis was completed on frequent gamblers' open-ended responses to questions regarding reasons for and against completing a problem gambling screener. Participants (N = 262) were individuals who gambled at least once per week and were not currently being treated for gambling problems. A qualitative open-coding procedure independently completed by multiple researchers revealed that the most common reasons for completing the screener were individuals having a desire to check in on their behavior, because they were curious about the screener, because they were experiencing gambling-related harm, or that they were already considering making changes to their gambling. The most common reasons against completing the screener were that they were either avoidant of the experience because they thought it might cause psychological distress, or because they believed that they did not have a problem. This study provides insight into why many individuals who engage in risky levels of gambling behavior do not seek out helping resources. In addition to creating practically accessible helping resources, researchers should focus on techniques that can make help-seeking a less distressing and more acceptable experience.

Can motivational messages engage individuals at-risk for gambling disorder in an online assessment?

There is a need to better understand how to motivate individuals experiencing addiction-related concerns, such as gambling problems, to engage in help-seeking behaviors. This experiment tested whether online messages based on principles of motivational interviewing (MI) could be used to encourage individuals to complete a problem gambling screener. Participants (N = 805) who gambled at least weekly and were not receiving treatment for gambling problems were recruited via Amazon Mechanical Turk. Participants were randomly assigned to 1 of 3 message conditions that all offered participants the choice to complete either a problem gambling screener or an alternative questionnaire focused on gambling-related attitudes. The first condition was an MI-based interactive message, the second was similar in content but was presented in a noninteractive manner, and the third was a control message that did not include motivational elements. We found that the interactive motivational message yielded significantly higher rates of screener completion (39%) than the noninteractive message (28%) or control message (29%), χ² (2, N = 805) = 8.28, p = .016, Φ = .29. This remained significant after controlling for other study variables. Controlling for message condition, participants were more likely to complete the screener if they gambled more frequently, with more money, were more psychologically distressed and interested in receiving help for gambling problems, or had ever received treatment for gambling problems. These findings provide support for the use of interactive MI-based messages to encourage individuals at-risk for experiencing problems to use helping resources. (PsycInfo Database Record (c) 2021 APA, all rights reserved).

Gambling and Alcohol Problems during the College Years: Personality, Physical and Emotional Health and Gambling Beliefs.

Gambling and alcohol problems commonly co-occur during emerging adulthood. Co-occurring problems may relates to personality factors, physical health, mental health and gambling belief systems. In a large sample of colleges students (N = 513), we examined alcohol, gambling and co-occurring problem groups relative to a group without alcohol or gambling problems from large sample of college students. Group differences were found on Constraint and Negative Emotionality (ps ≤ .05). All three groups had a higher score on gamblers' beliefs of illusion of control compared to the group with no problems (all ps < .05). Those with co-occurring problems had a higher score on illusion of control beliefs than those with alcohol problems only. For luck/perseverance gambling beliefs, those with co-occurring problems had higher levels than other groups on these beliefs. The group with alcohol problems and significantly poorer mental health outcomes than those without alcohol or gambling problems. Individuals with gambling problems or alcohol problems only had significantly poorer self-rated overall physical health (p < .01). Differences were found between groups (alcohol, gambling, alcohol + gambling and neither) on self-rated energy and fatigue as well as pain (ps < .05). Gambling and alcohol problems may relate to emotional and health problems, and personality and belief systems may be related to the co-occurrence of gambling and alcohol problems.

Sweetening the pot: Exploring differences between frequent gamblers who do and do not gamble under the influence of cannabis.

The legalization of recreational cannabis for adults is becoming more common across the United States of America, as well as other counties around the world. Previous research has documented shared risk factors between cannabis use and gambling. Experimental studies have shown cognitive effects of cannabis that might influence gambling behavior. The current study explored demographics, gambling behaviors, and mental health differences based on the degree to which individuals use cannabis while they gamble. Individuals (N = 805) who gambled at least weekly completed an online survey. Thirty percent reported gambling under the influence of cannabis. Of these individuals, 41% reported using cannabis 25% of the time that they gambled, 31% reported being under the influence 50% of the time when gambling, 16% were under the influence 75% of the time when gambling, and 13% reported always or almost always gambling under the influence of cannabis. Those who reported gambling while under the influence of cannabis were more likely to be younger, non-white and non-heterosexual. They also reported higher levels of psychological distress, were more likely to have had a diagnosis of ADHD and a history of treatment for gambling, substance use, or other kinds of mental health concerns. Individuals who used cannabis while gambling also reported gambling more frequently than those who did not. This study provides one of the first explorations into who uses cannabis while gambling. Future experimental studies are required to investigate the direct effects of cannabis on gambling behaviors.

Is more better? A meta-analysis of dose and efficacy in face-to-face psychological treatments for problem and disordered gambling.

A growing literature supports the efficacy of cognitive-behavioral therapies, motivational interventions, and personalized feedback to treat problem and disordered gambling. However, there is currently debate as to how much treatment is necessary. Some studies indicate that attending a greater number of sessions is related to enhanced therapeutic outcomes, while other studies indicate that one session produces equivalent therapeutic outcomes to multiple sessions. To contribute to this debate, meta-analysis was used to examine the relation between dose and outcome in studies of cognitive-behavioral, motivational, and personalized feedback interventions (both individual and group treatment formats were included). Fourteen studies of randomized controlled trials representing 1,203 participants across 19 treatment-control comparisons were identified. The intended treatment dose (i.e., the number of sessions prescribed to participants) across the 14 studies ranged from 1 to 30 sessions. Of the 10 studies reporting the received treatment dose (i.e., the number of sessions that participants attended), the weighted mean dose was 6.8 sessions (SD = 2.7). Both intended treatment dose and received treatment dose were positively related to outcome at posttreatment-as the number of sessions increased, so too did the magnitude of the between group effect size. There were an insufficient number of studies reporting outcome at long-term follow up to evaluate the relation between intended dose, received dose, and outcome. Discussion centers on several areas for future research on psychological treatments for problem and disordered gambling. Specific recommendations are made for researchers and practicing clinicians. (PsycInfo Database Record (c) 2020 APA, all rights reserved).

Can a motivational letter increase attendance to psychological treatment for gambling disorder?

High rates of treatment refusal and dropout have complicated the delivery of psychological treatment for gambling disorder, which continues accumulating evidence for efficacy. Incorporating motivational interviewing and addressing outcome expectations into psychological treatments has been shown to increase overall attendance. However, no studies have investigated whether motivational interviewing and outcome expectations can increase attendance at the initial and subsequent sessions of psychological treatment for gambling disorder. Participants were 69 prospective clients who contacted an outpatient training clinic requesting treatment services for gambling-related problems. They were randomly assigned to receive a mailed letter that incorporated principles of motivational interviewing and addressed outcome expectancies plus a telephone reminder call or to receive a telephone reminder call only. Clients who received the letter plus reminder call were more likely to attend the initial session than were clients who received the reminder call only. Clients receiving the letter were also more likely to reschedule their initial session and less likely to not show up than were clients receiving the reminder call only. There was no significant difference in attendance at subsequent sessions. These results suggest that mailing a similar letter to prospective clients of psychological treatment for gambling disorder is worthwhile, given the associated ease and low cost. Future investigations should further investigate the value of strengthening the motivation of prospective clients and clinics before initial treatment sessions, and they should investigate the distinction between clients who reschedule versus not show up. (PsycINFO Database Record (c) 2020 APA, all rights reserved).

Gambling and Cannabis Use: Clinical and Policy Implications.

Eleven US States and the District of Columbia legally allow personal (i.e., recreational) cannabis use by adults, and an additional 22 states allow use of cannabis for medicinal purposes. Of these jurisdictions, only two do not have some form of legalized gambling available (https://www.casino.org/local/guide/). In contrast to this rapid increase in legally available marijuana is the limited knowledge about the intersection of cannabis use and gambling. This paper strives to define the current status of the relevant literatures and consider the implication for future gambling research. We describe the research literature on the prevalence of cannabis use and co-existing gambling problems and the effects of cannabis use on gambling-related cognitive functions and decision-making. We also discuss clinical considerations with treating problem gamblers with a cannabis use disorder. Finally, the potential implications for responsible gambling practices and policies and the most pressing gaps in the research literature are offered.