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1.
Psychol Assess ; 36(3): 200-214, 2024 Mar.
Article in English | MEDLINE | ID: mdl-38386390

ABSTRACT

Our consumer-driven culture has negative impacts for individuals who are vulnerable to clinical hoarding and compulsive shopping. Because of this, there is an ever-present need to have standardized tools to assess why we acquire and save things we might not need. In this article, we present the development of the Acquiring Motives Questionnaire (AMQ) and Saving Motives Questionnaire (SMQ), which were written based on a thorough literature review and consultation with 22 experts in the field. After piloting with two large nonclinical samples, we administered the measures to another large nonclinical sample (N = 535; Mage = 24.4, 74.2% female, 54.6% White) and then a community sample of individuals with hoarding disorder and/or compulsive buying-shopping disorder and controls without any mental health diagnoses (N = 159; Mage = 42.54, 85.5% female, 59.7% White). Confirmatory factor analyses supported a 14-factor model for the AMQ and a 14-factor model for the SMQ. All subscales demonstrated good internal consistency (ω = 0.81-0.96), 2-week test-retest reliability (intraclass correlation coefficient = 0.67-0.83), and convergent, divergent, and criterion validity. The measures also distinguished between controls and individuals with hoarding and/or compulsive buying diagnoses. Findings highlight that acquiring and saving behaviors are both motivated by the pursuit of positive emotions and the avoidance of negative emotions, which is consistent with our theoretical understanding of these clinical issues. Based on our findings, we make suggestions for psychological interventions. (PsycInfo Database Record (c) 2024 APA, all rights reserved).


Subject(s)
Motivation , Referral and Consultation , Female , Humans , Male , Reproducibility of Results , Databases, Factual , Factor Analysis, Statistical
2.
J Behav Addict ; 2023 Sep 28.
Article in English | MEDLINE | ID: mdl-37773748

ABSTRACT

Background and aims: The prominent cognitive-behavioral model of hoarding posits that information processing deficits contribute to hoarding disorder. Although individuals with hoarding symptoms consistently self-report attentional and impulsivity difficulties, neuropsychological tests have inconsistently identified impairments. These mixed findings may be the result of using different neuropsychological tests, tests with poor psychometric properties, and/or testing individuals in a context that drastically differs from their own homes. Methods: One hundred twenty-three participants (hoarding = 63; control = 60) completed neuropsychological tests of sustained attention, focused attention, and response inhibition in cluttered and tidy environments in a counterbalanced order. Results: Hoarding participants demonstrated poorer sustained attention and response inhibition than the control group (CPT-3 Omission and VST scores) and poorer response inhibition in the cluttered environment than when in the tidy environment (VST scores). CPT-3 Detectability and Commission scores also indicated that hoarding participants had greater difficulty sustaining attention and inhibiting responses than the control group; however, these effect sizes were just below the lowest practically meaningful magnitude. Posthoc exploratory analyses demonstrated that fewer than one-third of hoarding participants demonstrated sustained attention and response inhibition difficulties and that these participants reported greater hoarding severity and greater distress in the cluttered room. Discussion and conclusions: Given these findings and other studies showing that attentional difficulties may be a transdiagnostic factor for psychopathology, future studies will want to explore whether greater sustained attention and response inhibition difficulties in real life contexts contribute to comorbidity and functional impairment in hoarding disorder.

3.
J Pers ; 2023 Jul 30.
Article in English | MEDLINE | ID: mdl-37519015

ABSTRACT

OBJECTIVE: Perfectionism is linked to a variety of mental health conditions in university students. The Perfectionism Social Disconnection Model posits that perfectionistic individuals exhibit off-putting interpersonal behaviors (i.e., rejection sensitivity and hostility), which lead to social disconnection, and in turn contribute to psychological distress. Although several longitudinal studies have found that social disconnection mediates the link between perfectionistic traits and psychological distress, less is known about how perfectionism leads to social disconnection. The present study aimed to address this gap. METHODS: A sample of 877 university students completed one survey a month for three consecutive months. RESULTS: Our random-intercept cross-lagged panel model results showed significant positive associations between the random intercepts of socially prescribed and self-oriented perfectionism with rejection sensitivity, hostility, and loneliness, with stronger associations for socially prescribed perfectionism. In addition, the random intercept of other-oriented perfectionism showed positive associations with hostility but not rejection sensitivity or loneliness. Moreover, almost all cross-lagged paths were nonsignificant. CONCLUSION: Collectively, these findings indicate that although perfectionistic traits may be associated with rejection sensitivity and hostility to varying degrees at the between-person level, these behaviors may not cause social disconnection at the within-person level.

4.
Br J Clin Psychol ; 62(2): 501-517, 2023 Jun.
Article in English | MEDLINE | ID: mdl-36950729

ABSTRACT

OBJECTIVES: Individuals with hoarding disorder are more likely to be overweight or obese than the general population for unknown reasons. METHODS: One hundred and twenty-nine individuals (Hoarding Group: n = 63; Control Group: n = 66) completed self-report measures and were offered snacks in a tidy and a cluttered environment in a counterbalanced order. Groups were based on the self-reporting of high or low hoarding symptoms. RESULTS: The hoarding group reported being less able to use their kitchen and prepare food at home and experiencing more impulsivity, distress intolerance and problematic eating beliefs than did the control group. The hoarding group consumed more cookies in the tidy room, whereas the control group consumed more cookies in the cluttered room. Greater impulsivity, distress intolerance and problematic body and eating beliefs were related to greater cookie consumption for the hoarding group. CONCLUSIONS: Early interventions that help individuals to tolerate distress and to engage in goal-directed behaviour regardless of their emotional state may have benefits for both hoarding and eating behaviour. We encourage future researchers to examine this hypothesis.


Subject(s)
Hoarding Disorder , Hoarding , Humans , Hoarding/psychology , Emotions , Self Report , Hoarding Disorder/psychology , Weight Gain
5.
Child Psychiatry Hum Dev ; 54(3): 806-814, 2023 06.
Article in English | MEDLINE | ID: mdl-34855039

ABSTRACT

Initial research suggests stepped-care approaches to therapy for youth anxiety is associated with reduced therapy time with similar therapeutic outcomes to treatment-as-usual in real-world settings. Research on the acceptability and feasibility of stepped-care approaches in routine practice is very limited. In a secondary analysis of a pilot randomised controlled trial that compared stepped-care to treatment-as-usual in adolescent mental health services, we examine acceptability and feasibility from consumer and clinician perspectives. Fifteen adolescents and ten clinicians provided brief quantitative and qualitative feedback. Some benefits were noted and these related to improved access to treatment; however, major barriers were also noted. Concerns related to the lack of consumer and clinician choice and flexibility in delivery of stepped interventions, challenges engaging adolescents with internet interventions and associated guided telephone calls, and workplace issues. Systemic changes to facilitate consumer preferences, clinician flexibility and staffing are needed for stepped-care to be feasible in routine care.


Subject(s)
Community Mental Health Services , Mental Health Services , Humans , Adolescent , Feasibility Studies , Anxiety/therapy , Anxiety Disorders/therapy
6.
Psychother Res ; 33(2): 131-145, 2023 02.
Article in English | MEDLINE | ID: mdl-35706348

ABSTRACT

Internalised shame has been linked to psychopathology and consistently identified as a predictor of poor treatment outcomes and premature therapy termination. We conducted a scoping review of therapist-delivered psychosocial interventions to reduce internalised shame to learn how to improve outcomes for individuals experiencing shame.Six bibliographical databases were searched for studies measuring internalised shame pre- and post-treatment. We screened 6846 abstracts; 42 full-text manuscripts were retrieved, with 16 studies meeting the inclusion criteria. Of these, 10 studies examined between- and within-subject effects, and 6 studies exclusively examined within-subject effects.Twelve of the sixteen included studies reported small to moderate within-group reductions in internalised shame. Between group analyses showed that shame interventions may be more effective than no treatment or treatment as usual, but not more effective than an active comparator.Successful treatments often involved psychoeducation, experiential exercises, and techniques to increase social support and emotional expression; however, study quality was weak to moderate and the importance of each of these techniques for reducing internalised shame was not determined.


Subject(s)
Psychosocial Intervention , Shame , Humans , Treatment Outcome
7.
J Behav Addict ; 11(3): 941-951, 2022 Sep 26.
Article in English | MEDLINE | ID: mdl-36053719

ABSTRACT

Background and aims: Object attachment is the emotional bond or connection that we have with possessions. Although thought to be ubiquitous, when excessive, object attachment is presumed to contribute to compulsive buying and hoarding problems. Unfortunately, our understanding of this relationship has been limited by the constraints of existing object attachment measures. In this paper, we developed and validated a new self-report questionnaire, called the Object Attachment Security Measure (OASM). Methods: We developed an item pool based on previous measures and consultation with 24 experts in the field. After piloting, we administered this measure to a large sample (Final N = 365), along with self-report measures of hoarding, compulsive buying, and previous object attachment measures. Results: We found that the OASM distinguished between secure and insecure object attachment. Both subscales showed excellent internal consistency and test-retest reliability over a two-week period. Additionally, they demonstrated excellent convergent and divergent validity, and criterion validity with measures of hoarding and compulsive buying symptoms. We also found that insecure, but not secure object attachment, was uniquely related to hoarding and compulsive buying symptomology. Discussion and conclusion: Our findings extend theoretical models, highlighting the role of insecure object attachment. Future research in both clinical and consumer behaviour fields should utilise the OASM, as reducing insecure object attachment and potentially encouraging secure object attachment could decrease maladaptive possession use and increase sustainable consumption.


Subject(s)
Hoarding Disorder , Hoarding , Humans , Object Attachment , Reproducibility of Results , Hoarding/psychology , Compulsive Behavior/diagnosis , Compulsive Behavior/psychology , Hoarding Disorder/diagnosis , Hoarding Disorder/psychology
8.
Curr Psychol ; : 1-16, 2022 Apr 04.
Article in English | MEDLINE | ID: mdl-35400979

ABSTRACT

Perfectionism is linked to a variety of mental health conditions in university students. Guided by the Perfectionism Social Disconnection Model, the purpose of the current mixed methods feasibility study was to evaluate the acceptability and potential effectiveness of a brief online intervention designed to reduce the negative consequences of perfectionism in university students. Seventy university students (83.9% female; M age = 19) reporting moderate to extreme levels of perfectionism completed the two hour 'Intentional Imperfection Program' (IIP). The IIP includes techniques to increase mindfulness, compassion for self and others, distress tolerance, and social skills. Participants completed self-report measures at baseline and at a two-week follow-up. Quantitative data showed statistically significant small to moderate reductions in self-oriented perfectionism (d = -0.48, p < .001), socially-prescribed perfectionism (d = 0.40, p < .001), hostility (r = 0.53, p < .001), rejection sensitivity (d = 0.37, p < .001), depression (r = -0.47, p < .001), and anxiety (r = -0.33, p = .010) and a small increase in perceived social support (r = -0.29, p = .023). Thematic analyses of qualitative data indicated that participants found the IIP feasible, enjoyable, and useful. A brief online intervention may be a feasible way of reducing the negative consequences of perfectionism among university students. A randomised control trial is warranted to further evaluate the efficacy of the IIP. This research was registered with the Australian New Zealand Clinical Trials Registry (no. ACTRN12620000574943).

9.
Behav Res Ther ; 151: 104064, 2022 04.
Article in English | MEDLINE | ID: mdl-35219144

ABSTRACT

Research into the aetiology, maintenance, and treatment of obsessive-compulsive disorder (OCD) has largely been informed by models of anxiety. However, non-experimental research suggests that some individuals may engage in compulsions to neutralise shame, with repugnant obsessions associated with more shame than other obsessions. Violent and sexual obsessions and shame have been linked with poorer treatment outcomes, and thus, treatment modifications are needed. This experimental study aimed to examine if and how shame fits into a cognitive behavioural model of OCD. Fifty-five individuals experiencing subclinical (n = 9) to clinical (n = 46) OCD symptoms were randomly administered four different obsession induction paradigms focused on harm, sexual, contamination, and symmetry obsessions. After each induction, participants reported on their emotional states, gave appraisal ratings regarding their urges to engage in compulsions and avoidant behaviour, and completed manipulation checks. Harm and sexual inductions elicited greater shame and anxiety and were considered more immoral than contamination and symmetry inductions. Shame responses were also independently associated with compulsion and avoidance behaviours in repugnant obsessions, controlling for anxiety. Theoretical models and treatment for OCD should be adapted to address shame.


Subject(s)
Obsessive-Compulsive Disorder , Anxiety/psychology , Anxiety Disorders , Humans , Obsessive Behavior/psychology , Obsessive-Compulsive Disorder/psychology , Shame
10.
Clin Psychol Psychother ; 29(2): 469-488, 2022 Mar.
Article in English | MEDLINE | ID: mdl-34409679

ABSTRACT

Psychological treatment for hoarding problems has historically been associated with poor outcomes. When treated as a subgroup of obsessive-compulsive disorder, individuals with hoarding beliefs were less likely to respond to treatment than individuals exhibiting other obsessive-compulsive beliefs and behaviours. When treated as its own disorder using cognitive behavioural therapy, individuals report approximately 25% improvement in symptoms on average. However, less than a third of people experience clinically meaningful change. Further, changes in functioning and quality of life are not routinely assessed. In this paper, we review the current conceptualization and treatment of hoarding problems to shed light on how treatment for hoarding disorder may be improved. Utilizing a harm reduction approach before administering treatment may be important to ensure the safety of individuals. Research should test whether treatment outcomes improve by including strategies that enhance a client's interpersonal functioning and ability to regulate emotions (i.e., based on dialectal behaviour therapy and mentalization-based treatments), especially while discarding and organizing belongings. We should also use modern learning theory to improve the delivery of exposure activities.


Subject(s)
Cognitive Behavioral Therapy , Hoarding Disorder , Hoarding , Obsessive-Compulsive Disorder , Hoarding Disorder/psychology , Humans , Obsessive-Compulsive Disorder/psychology , Quality of Life
11.
Behav Ther ; 52(5): 1226-1236, 2021 09.
Article in English | MEDLINE | ID: mdl-34452675

ABSTRACT

Excessive attachment towards possessions can be maladaptive because it can lead individuals to excessively acquire and save objects. Little is known about how attachment to objects develops and changes over time; however, interpersonal factors have been theorized to play a role. The current study examined whether interpersonal factors, specifically interpersonal attachment style and empathy, moderate changes in object attachment over time. A total of 145 participants with excessive acquiring and discarding difficulties rated their level of attachment to a novel object just after receiving it, and 1 week later. Participants also completed measures of interpersonal anxious attachment and interpersonal functioning. We found that changes in object attachment over time were moderated by interpersonal anxious attachment. Also, our findings suggested that individuals with hoarding problems are likely not impaired in their ability to empathize with others, but rather have difficulty displaying empathy in tense social situations and also have more empathy for fictional characters. Further, greater discomfort in tense social situations and greater empathy for fictional characters interacted to predict greater object attachment. Taken together, these findings indicate that individuals with an interpersonal anxious attachment style may be those at risk of forming greater attachments to objects over time. A learning history that includes inconsistent support from caregivers may result in individuals experiencing more empathy for fictional characters and discomfort in tense social situations, which may produce a vulnerability for becoming excessively attached to objects. Our results are in line with theories of hoarding which propose that individuals use objects to compensate for unmet interpersonal needs and suggest that treatment may need to target interpersonal functioning to reduce hoarding symptoms.


Subject(s)
Hoarding Disorder , Hoarding , Anxiety , Empathy , Humans , Object Attachment
12.
Psychiatry Res ; 303: 114062, 2021 09.
Article in English | MEDLINE | ID: mdl-34175712

ABSTRACT

The COVID-19 pandemic led to panic buying in many countries across the globe, preventing vulnerable groups from accessing important necessities. Some reports inaccurately referred to the panic buying as hoarding. Although hoarding is a separate issue characterised by extreme saving behaviour, the two problems may be influenced by similar factors. Participants from Australia and the United States (final N = 359) completed online self-report measures of panic buying, hoarding, shopping patterns, perceived scarcity, COVID-19 illness anxiety, selfishness, and intolerance of uncertainty. Our findings showed that panic buying was related to hoarding symptoms (r's = .23 - .36), and yet, both were uniquely associated with different psychological factors. Whilst panic buying was most strongly related to greater perceived scarcity (r's = .38 - .60), hoarding was most related to a general intolerance of uncertainty (r's = .24 - .57). Based on our findings, future strategies to prevent panic buying should focus on reducing perceived scarcity cues in the community, as this seems to be the primary driver of panic buying. Another preventative strategy to reduce excessive acquiring and saving may be to implement educational programs to increase people's ability to tolerate distress and uncertainty.


Subject(s)
Bathroom Equipment , COVID-19 , Hoarding , Humans , Pandemics , SARS-CoV-2
13.
Psychiatry Res ; 303: 114066, 2021 09.
Article in English | MEDLINE | ID: mdl-34175714

ABSTRACT

Stepped-care (SC) interventions for treating adolescent anxiety have been shown to reduce therapy time and societal costs with similar therapeutic outcomes to best practice when applied in university clinics. This pilot study examined clinical- and cost-effectiveness of SC in two community mental health services. Fifty-three anxious adolescents (aged 12-18 years) were randomly allocated to SC or treatment as usual (TAU). Adolescent- and clinician-rated symptom severity and quality of life collected over time indicated SC used significantly less therapy time, with similar benefits in clinical effectiveness, waiting time and quality adjusted life years. Significant barriers limited engagement with early therapy steps.


Subject(s)
Cognitive Behavioral Therapy , Community Mental Health Services , Adolescent , Anxiety/therapy , Humans , Pilot Projects , Quality of Life
15.
Behav Ther ; 52(2): 442-454, 2021 03.
Article in English | MEDLINE | ID: mdl-33622512

ABSTRACT

Approximately 50% of individuals fail to obtain treatment benefits when undergoing cognitive-behavioral therapy (CBT) for binge-eating behaviors, making it necessary to evaluate additional approaches. Cue exposure and response prevention (CERP) is one such approach, although its effectiveness across studies has been inconsistent. This may be due to inconsistent implementation of theoretically based CERP strategies. This possibility has not yet been systematically investigated. To address this gap, this review investigated which CERP strategies have been incorporated into treatment protocols for binge eating, and if the use of certain strategies improves treatment effectiveness. Relevant studies were identified through reference lists, grey literature, and searches of electronic databases using multiple search terms related to CERP and binge eating, which resulted in 18 eligible studies. Most studies were underpowered, many were of low methodological quality, and none of the included studies utilized all of the strategies that have been recommended to optimize CERP. Despite these weaknesses, CERP appeared to reduce the frequency of binge eating in the short and long term. This review underscores the need for higher quality research that utilizes larger samples and uniform outcome measures that are more strongly grounded in theory. Such research would help improve treatment outcomes for binge eating.


Subject(s)
Binge-Eating Disorder , Cognitive Behavioral Therapy , Binge-Eating Disorder/prevention & control , Cues , Feeding Behavior , Humans , Treatment Outcome
16.
Behav Ther ; 52(1): 195-207, 2021 01.
Article in English | MEDLINE | ID: mdl-33483117

ABSTRACT

Approximately half of individuals with binge eating disorder (BED) fail to improve when treated with cognitive behavioral therapy; thus, better treatments are needed. Cue exposure and response prevention (CERP) may be one option, but its full potential for reducing binge eating remains unknown because prior applications for binge eating have not utilized the broad range of strategies believed to optimize exposure therapy. The current single-subject AB design investigated the acceptability and effectiveness of a comprehensive CERP treatment among 8 women who met DSM-5 criteria for binge eating disorder. Changes in the number of binges were measured from baseline to the end of treatment, and desire to eat, salivation, and idiographic expectancies of aversive outcomes to food-cue exposure (idiographic CS-US expectancies), including expectancies about ability to tolerate distress when exposed to food cues were measured across the course of treatment. Statistical analysis revealed a significant reduction in the number of binges from baseline to the end of treatment. Across the course of treatment, desire to eat and idiographic CS-US expectancies reduced, and distress tolerance expectancies increased. No participants dropped out and all reported being maximally satisfied with the treatment. Based on these findings, future randomized-control trials with larger samples should examine the efficacy of CERP and mechanisms underlying change with the aim of establishing a more effective treatment for binge eating disorder.


Subject(s)
Binge-Eating Disorder , Cognitive Behavioral Therapy , Implosive Therapy , Binge-Eating Disorder/therapy , Cues , Female , Humans , Pilot Projects , Treatment Outcome
17.
Psychol Addict Behav ; 35(2): 160-171, 2021 Mar.
Article in English | MEDLINE | ID: mdl-32437178

ABSTRACT

Caffeinated alcoholic beverage (CAB) consumption is a risky drinking practice for young people. The purpose of the current set of studies was to develop and psychometrically evaluate a theory-based CAB motives measure to understand what drives CAB consumption and its ensuing consequences. Using 4 different samples, we pilot tested the items of the Caffeinated Alcohol Beverages Motives Questionnaire (CABMQ) and then evaluated its factor structure and its convergent, concurrent, and discriminant validity. Factor analyses supported a 5-factor structure. The coping and conformity subscales assessed negative reinforcement from internal and external sources, respectively. The social subscale assessed positive reinforcement derived from external sources, whereas the intoxication and energy enhancement subscales assessed positive reinforcement derived from internal sources. Differential relationships between the intoxication and energy enhancement subscales and existing motives measures provided compelling support for their individual distinctiveness. Greater endorsement of all subscales was related to experiencing more adverse alcohol-related consequences, whereas all subscales but the conformity subscale were related to greater CAB consumption. After controlling for general drinking motives, coping motives, energy enhancement motives, intoxication enhancement motives, and social motives were significantly correlated with CAB use, whereas only energy enhancement motives were significantly correlated with alcohol-related consequences. In sum, these results show that the CABMQ helps us understand CAB use and its consequences, with the energy enhancement subscale being particularly helpful. Future research should examine if energy enhancement motives explain why CABs pose more risk than drinking alcohol on its own. (PsycInfo Database Record (c) 2021 APA, all rights reserved).


Subject(s)
Alcohol Drinking/psychology , Alcoholic Beverages , Caffeine/adverse effects , Motivation , Psychometrics , Surveys and Questionnaires , Adaptation, Psychological , Factor Analysis, Statistical , Female , Humans , Male , Motivation/drug effects , Reinforcement, Psychology , Social Behavior , Young Adult
18.
Curr Opin Psychol ; 39: 1-5, 2021 06.
Article in English | MEDLINE | ID: mdl-32777684

ABSTRACT

Motives for acquiring and saving objects are closely linked to object attachment, but the nature of these associations has not been established. A better understanding of the motives for acquiring and saving possessions and how they relate to object attachment may reveal insights into the underpinnings of hoarding disorder. In turn, these insights can aid in identifying optimal targets for interventions for hoarding problems. In this paper, we propose a simple theoretical model of the dynamic associations among motives to acquire objects, object attachment, and motives to save objects, grounded in a review of the extant literature. Our hope is that this model provides a useful framework to structure future research.


Subject(s)
Hoarding Disorder , Hoarding , Humans , Motivation , Object Attachment , Problem Solving
19.
Article in English | MEDLINE | ID: mdl-35079564

ABSTRACT

This shorter communication explores the concept of clinically significant change in treatment outcome studies for hoarding disorder. We argue that cross-study comparisons have been hindered due to researchers using different formulations to assess individual change. As a result, we propose that researchers adopt a standardized approach to calculating rates of clinically significant change for the Saving Inventory-Revised (SI-R) based on Jacobson and Truax's (1991) two-step method. Specifically, we recommend that individuals whose SI-R total scores have reduced by at least 20 points and whose post-treatment score is 38 or less be classified as recovered. Individuals whose total score decreases by 20 points or more, but whose post-treatment score remains above 38, should be classified as improved but not recovered. Individuals whose total score increases by 20 or more points should be classified as deteriorated. Any individual whose total score has changed by less than 20 points should be classified as not changed. By adopting these criteria, researchers will facilitate cross-study treatment outcome comparisons and aid in our understanding of the impact that hoarding treatment has on its recipients.

20.
JMIR Res Protoc ; 9(7): e15803, 2020 Jul 29.
Article in English | MEDLINE | ID: mdl-32723727

ABSTRACT

BACKGROUND: Young Australians (16-25 years) have the highest rates of past-month cannabis use in the world. Cannabis use increases the risk of alcohol and other drug disorders and depressive disorders, and has a robust dose-response association with psychotic experiences (PEs) and disorders. PEs are subthreshold positive psychotic symptoms, including delusions and hallucinations, which increase the risk of substance use, depressive or anxiety disorders, and psychotic disorders. Access to effective web-based early interventions targeting both cannabis use and PEs could reduce such risk in young people. OBJECTIVE: The objective of this study is to determine the efficacy and cost-effectiveness of the Keep it Real web-based program compared to an information-only control website among young cannabis users (16-25 years) with PEs. METHODS: Participants are recruited online, and consenting individuals meeting inclusion criteria (aged 16-25 years, who have used cannabis in the past month and experienced PEs in the past 3 months) are automatically randomized to either the Keep it Real web-based program (n=249) or an information-only control website (n=249). Both websites are self-guided (fully automated). The baseline and follow-up assessments at 3, 6, 9, and 12 months are self-completed online. Primary outcome measures are weekly cannabis use, PEs, and the relative cost-effectiveness for quality-adjusted life years. Secondary outcomes include other substance use and related problems, PE-related distress, cannabis intoxication experiences, severity of cannabis dependence, depression/anxiety symptoms, suicidality, and mental well-being and functioning. RESULTS: Recruitment commenced in February 2019, and the results are expected to be submitted for publication in mid-2021. CONCLUSIONS: This study protocol describes a large randomized controlled trial of a new web-based program for young cannabis users experiencing PEs. If effective, the accessibility and scalability of Keep it Real could help reduce growing public health concerns about the significant social, economic, and health impacts of cannabis use. TRIAL REGISTRATION: Australian New Zealand Clinical Trials Registry ACTRN12618001107213; https://www.anzctr.org.au/Trial/Registration/TrialReview.aspx?id=374800. INTERNATIONAL REGISTERED REPORT IDENTIFIER (IRRID): DERR1-10.2196/15803.

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