Nudge theory and gambling: a scoping review.

Background: Gambling disorder (GD) is a pressing public health concern with significant societal costs. The recently developed nudge theory, which is rooted in behavioral economics, aims to influence the decision-making behaviors of individuals by implementing changes in the environment. Aim: This scoping review aims to synthesize the literature on nudge theory as it relates to gambling. Methods: This scoping review accords with the Arksey and O'Malley framework, as refined by Levac et al. It includes only articles from peer-reviewed journals that focus, as main themes, on both nudge theory and gambling. The final study selection includes six articles. Results: The scoping review process led to studies explaining how (1) nudges aim to prod people toward healthier gambling choices, fostering the adoption of more responsible gambling practices, and (2) some gambling features, called dark nudges (or sludges), exploit and harm the decision-making processes of people who gamble. Conclusion: This scoping review highlights the fact that many stakeholders are involved in the field of gambling, and that better cooperation between them would promote safer and more responsible gambling practices. Future research is also needed to empirically test nudges to develop a better understanding of their impact on those who gamble.

A call for qualitative and mixed-methods research on gambling and cannabis.

Gambling disorder and cannabis use disorder are both considered major public health issues. Despite the well-documented frequency of substance use disorders among people with gambling disorder, little is known about the experiences of those who both engage with gambling and cannabis. A scoping review was undertaken to investigate studies focusing on the experiences of people who gamble and use cannabis. Unexpectedly, no qualitative or mixed-methods studies that included an in-depth qualitative component to study the lived experiences of this population were found. This absence highlights the critical need to diversify research methods and fill the gap in knowledge of the lived experiences of people who both gamble and consume cannabis.

Researchers' experiences with patient engagement in health research: a scoping review and thematic synthesis.

CONTEXT: Implicating patients in research is gaining popularity around the world and is now the reference of many funding agencies. Understanding these partnerships is necessary to grasp this new reality. The experiences of researchers who have involved patient-partners (PPs) in health research are important for a better understanding of these practices. OBJECTIVE: This study aimed to identify and analyze the existing qualitative scientific literature on the experiences of academic researchers involved in health research with patient engagement (PE). DESIGN: A scoping review of the available literature with an inductive thematic synthesis, guided by the methodological framework of Arksey and O'Malley. DATA COLLECTION: A search strategy was developed to include keywords relating to researchers, patient-partners, experiences, and the qualitative methodologies of the targeted studies. Five databases were searched using the EBSCO-host engine. The search results were screened by four reviewers to only include articles written in English on the topic of the experience of academic researchers having worked with PPs in health research based on qualitative studies or mixed-methods studies with a distinct qualitative section. ANALYSIS: Articles included were charted for general information. All "results" sections were coded line by line. These codes were organized inductively to form descriptive and analytical themes. This led to the synthesis of the ideas found in the selected articles. RESULTS: The search strategy yielded 7616 results, of which 2468 duplicates were removed. The remaining 5148 articles were screened, resulting in the exclusion of 5114 off-topic studies. The remaining 29 full-text articles were evaluated for inclusion from which 5 additional studies were identified. The final selection consisted of 11 articles that met all the criteria. These articles were published between 2009 and 2019. Five general themes inductively emerged from the analysis: the understanding of PE, motivations, contexts, attitudes, and practical aspects of PE that are central to researchers. CONCLUSION: This scoping review provides a better understanding of the experiences of researchers who have implemented patient partnerships in health research projects. Our findings reveal many positive elements central to health researchers' discourses about PE, but they provide insights into the challenges and postures of resistance. This knowledge can support the development of empirically sound improvements in PE practices.

The practice of involving patients in research is gaining popularity around the world and is now the reference for many institutions and funding agencies. The individual experiences of researchers who have involved patient-partners in health research are essential for a better understanding of how these relationships unfold within research teams, and allows for identifying the challenges and best practices. This review's objective is to identify and analyze the existing scientific literature focused on the experiences of academic researchers involved in health research with patient engagement (PE). A close screen of 7616 search results yielded 11 scientific peer-reviewed articles corresponding to all inclusion criteria for further analysis. Five general themes emerged from the analysis: (1) the understanding of PE, (2) the motivations for PE, (3) the contexts of PE, (4) the attitudes toward PE, and (5) the practical aspects of PE that are central to health researchers. This analysis provides a novel summary of the current knowledge on the in-depth experiences of researchers who have implemented patient-partnerships in health research projects. Beyond many positive elements central to health researchers, our analysis also revealed the challenges and postures of resistance. Both positive and negative perspectives on PE help to draw a better understanding of these collaborations. This knowledge can support the development of empirically sound improvements in PE.

Qualitative Experience of Self-Exclusion Programs: A Scoping Review.

Gambling disorder is a major public health issue in many countries. It has been defined as a persistent, recurrent pattern of gambling and is associated with substantial distress or impairment, lower quality of life, and living with a plurality of psychiatric problems. Many people suffering from gambling disorder seek help in ways other than formal treatment seeking, including self-management strategies. One example of responsible gambling tools that has gained popularity in recent years is self-exclusion programs. Self-exclusion entails individuals barring themselves from a gambling venue or a virtual platform. The aim of this scoping review is to summarize the literature on this topic and to explore participants' perceptions and experiences with self-exclusion. An electronic literature search was conducted on 16th May 2022 in the following databases: Academic Search Complete, CINAHL Plus with Full Text, Education Source, ERIC, MEDLINE with Full Text, APA PsycArticles, Psychology and Behavioral Sciences Collection, APA PsychInfo, Social Work Abstracts, and SocINDEX. The search yielded a total of 236 articles, of which 109 remained after duplicates were removed. After full-text reading, six articles were included in this review. The available literature shows that although there are many barriers and limitations to the current self-exclusion programs, self-exclusion is generally viewed as an effective responsible gambling strategy. There is a clear need to improve the current programs by increasing awareness, publicity, availability, staff training, off-site venue exclusion, and technology-assisted monitoring, as well as by adopting more holistic management approaches to gambling disorders in general.

Experience of LGBTQIA2S+ populations with gambling during the COVID-19 pandemic: protocol for a mixed-methods study.

INTRODUCTION: Research undertaken since the beginning of the COVID-19 pandemic has provided us information about the impact of the pandemic on the gambling habits of the general population. However, very little is known about certain subgroups at increased risk of developing gambling disorder, such as the LGBTQIA2S+ population. The purpose of this study is to describe the impact of the COVID-19 pandemic on gambling behaviours among LGBTQIA2S+ individuals. In addition, we want to understand the experiences of the LGBTQIA2S+ population with gambling disorder and identify interventions that LGBTQIA2S+ people have found to be effective in addressing problem gambling during the COVID-19 pandemic. METHODS AND ANALYSIS: This study has a sequential explanatory mixed-method design in two phases over 2 years. The first phase is a correlational study. We will conduct a cross-sectional survey using a stratified random sampling among Canadian residents who are 18 years of age or older, self-identify as sexually and gender-diverse (ie, LGBTQIA2S+) and have gambled at least once in the previous 12 months. This survey will be administered online via a web panel (n=1500). The second phase is a qualitative study. Semistructured interviews will be conducted with LGBTQIA2S+ people with problematic gambling (n=30). ETHICS AND DISSEMINATION: This research project has been ethically and scientifically approved by the Research Ethics Committee and by the CIUSSS de l'Estrie-CHUS scientific evaluation committee on 3 March 2022 (reference number: 2022-4633-LGBTQ-JHA). Electronic and/or written informed consent, depending on the data collection format (online survey and online or in-person interviews), will be obtained from each participant. A copy of the consent form and contact information will be delivered to each participant.

The experience of patient partners in research: a qualitative systematic review and thematic synthesis.

CONTEXT: Patient engagement in research consists in involving patients as partners across the research cycle. This practice has quickly become an international standard, with funding bodies actively encouraging it. As the increased incentive to engage patients can lead to tokenistic partnerships, it is important to consider the experiences of patient-partners. OBJECTIVE: To synthesize the qualitative literature on the experience of patients as partners in research. DESIGN: A systematic review of the literature with thematic synthesis was realized, guided by the framework developed by Thomas and Harden (Bmc Med Res Methodol 8: 45, 2008). DATA COLLECTION: A search strategy was developed to encompass keywords relating to patient-partners in research, their experience, and the qualitative nature of the target studies. 10 databases were searched using the EBSCO-host engine, along with the Scopus engine to include EMBASE. The search results were screened for the following inclusion criteria: articles written in English; articles reporting on the experience of patient-partners in research; qualitative studies or mixed-methods studies with a distinct qualitative section. ANALYSIS: Included articles were charted for general information. The CASP qualitative checklist was used for critical appraisal. The "results" section of each article was coded line by line. Codes were aggregated inductively to form descriptive themes and analytical themes, in order to synthesize the ideas found in the selection of articles. RESULTS: The initial search yielded 10,222 results. After the removal of duplicates, 5534 titles and abstracts were screened, 88 full-text reports were evaluated, and 41 studies were included. Articles reporting on these studies were published between 2005 and 2020. Seven themes emerged from the analysis: "motivations to engage in research", "activities in patient engagement", "structure", "competence", "team dynamics", "impacts on broader life", and "illness". Articles reported varying degrees of perceived impact on research and satisfaction concerning the level of engagement. The importance of power differentials and team dynamics were widely stated. CONCLUSIONS: Findings provide an in-depth view of the experiences of patient-partners in research. Most articles reported a generally positive experience, but challenges and pitfalls of patient engagement were identified. This will serve research teams by highlighting good practices and possible improvements.

Patient engagement is the practice of involving patients as partners in research teams. Through these partnerships, patients become co-researchers, which promotes patient-centered research. In recent years, this practice has quickly gained popularity and is now encouraged by scientific funding bodies. This financial incentive to engage patients helps to promote the practice but can lead to tokenistic partnerships. Therefore, it is important to understand how patient-partners experience engagement in research.This systematic review aimed to describe the experience of patient-partners in research by synthesizing existing studies on the subject. 41 relevant studies were found, which described seven general themes in patient-partners' experience. These themes were "motivations to engage in research", "activities in patient engagement", "structure", "competence", "team dynamics", "impacts on broader life", and "illness". Within these themes, many positive experiences were described, such as the stimulating intellectual challenges of research, or the pride of helping others. Negative experiences were also identified, such as when patient-partners felt inadequately prepared for research activities, or when hierarchies of powers were formed. These findings will allow future research teams to improve patient engagement and will hopefully lead to better experiences for patient-partners.

Examining frustration intolerance beliefs among adults with dyslexia or developmental coordination disorder.

BACKGROUND: Research suggests that adults diagnosed with specific learning disorders, such as dyslexia or developmental coordination disorder (DCD), are at greater risk of emotional problems related to frustration and anger. AIMS: The purpose of this study was to investigate patterns of frustration intolerance beliefs among two groups of adults with a specific learning disorder (dyslexia or DCD), compared with typical adults. METHODS AND PROCEDURES: Participants were 235 French adults (students or in employment) with dyslexia (Mage = 35.8 years, SD = 13.3; females = 63 %), DCD (Mage = 32.9 years, SD = 11.8; females = 58 %) or typical development (Mage = 33.2 years, SD = 12.7; females = 65 %), who completed an online self-report questionnaire. OUTCOMES AND RESULTS: Analysis of variance revealed a significant between-groups difference, as both learning disorder groups had higher frustration intolerance beliefs than the typical adults. Post hoc analysis showed that participants with DCD scored higher than those with dyslexia on each type of frustration intolerance belief, while participants with dyslexia scored higher than typical adults on achievement frustration and discomfort intolerance. CONCLUSIONS AND IMPLICATIONS: These results underline the usefulness of distinguishing between frustration intolerance dimensions, and of using rational emotive behavior therapy to reduce the irrational beliefs of people with DCD or dyslexia.

Using Well-Understood Single-Objective Functions in Multiobjective Black-Box Optimization Test Suites.

Several test function suites are being used for numerical benchmarking of multiobjective optimization algorithms. While they have some desirable properties, such as well-understood Pareto sets and Pareto fronts of various shapes, most of the currently used functions possess characteristics that are arguably underrepresented in real-world problems such as separability, optima located exactly at the boundary constraints, and the existence of variables that solely control the distance between a solution and the Pareto front. Via the alternative construction of combining existing single-objective problems from the literature, we describe the bbob-biobj test suite with 55 bi-objective functions in continuous domain, and its extended version with 92 bi-objective functions (bbob-biobj-ext). Both test suites have been implemented in the COCO platform for black-box optimization benchmarking and various visualizations of the test functions are shown to reveal their properties. Besides providing details on the construction of these problems and presenting their (known) properties, this article also aims at giving the rationale behind our approach in terms of groups of functions with similar properties, objective space normalization, and problem instances. The latter allows us to easily compare the performance of deterministic and stochastic solvers, which is an often overlooked issue in benchmarking.

Markov Chain Analysis of Cumulative Step-Size Adaptation on a Linear Constrained Problem.

This paper analyzes a (1, λ)-Evolution Strategy, a randomized comparison-based adaptive search algorithm optimizing a linear function with a linear constraint. The algorithm uses resampling to handle the constraint. Two cases are investigated: first, the case where the step-size is constant, and second, the case where the step-size is adapted using cumulative step-size adaptation. We exhibit for each case a Markov chain describing the behavior of the algorithm. Stability of the chain implies, by applying a law of large numbers, either convergence or divergence of the algorithm. Divergence is the desired behavior. In the constant step-size case, we show stability of the Markov chain and prove the divergence of the algorithm. In the cumulative step-size adaptation case, we prove stability of the Markov chain in the simplified case where the cumulation parameter equals 1, and discuss steps to obtain similar results for the full (default) algorithm where the cumulation parameter is smaller than 1. The stability of the Markov chain allows us to deduce geometric divergence or convergence, depending on the dimension, constraint angle, population size, and damping parameter, at a rate that we estimate. Our results complement previous studies where stability was assumed.

Two independent and primitive envelopes of the bilobate nucleus of comet 67P.

The factors shaping cometary nuclei are still largely unknown, but could be the result of concurrent effects of evolutionary and primordial processes. The peculiar bilobed shape of comet 67P/Churyumov-Gerasimenko may be the result of the fusion of two objects that were once separate or the result of a localized excavation by outgassing at the interface between the two lobes. Here we report that the comet's major lobe is enveloped by a nearly continuous set of strata, up to 650 metres thick, which are independent of an analogous stratified envelope on the minor lobe. Gravity vectors computed for the two lobes separately are closer to perpendicular to the strata than those calculated for the entire nucleus and adjacent to the neck separating the two lobes. Therefore comet 67P/Churyumov-Gerasimenko is an accreted body of two distinct objects with 'onion-like' stratification, which formed before they merged. We conclude that gentle, low-velocity collisions occurred between two fully formed kilometre-sized cometesimals in the early stages of the Solar System. The notable structural similarities between the two lobes of comet 67P/Churyumov-Gerasimenko indicate that the early-forming cometesimals experienced similar primordial stratified accretion, even though they formed independently.

Large heterogeneities in comet 67P as revealed by active pits from sinkhole collapse.

Pits have been observed on many cometary nuclei mapped by spacecraft. It has been argued that cometary pits are a signature of endogenic activity, rather than impact craters such as those on planetary and asteroid surfaces. Impact experiments and models cannot reproduce the shapes of most of the observed cometary pits, and the predicted collision rates imply that few of the pits are related to impacts. Alternative mechanisms like explosive activity have been suggested, but the driving process remains unknown. Here we report that pits on comet 67P/Churyumov-Gerasimenko are active, and probably created by a sinkhole process, possibly accompanied by outbursts. We argue that after formation, pits expand slowly in diameter, owing to sublimation-driven retreat of the walls. Therefore, pits characterize how eroded the surface is: a fresh cometary surface will have a ragged structure with many pits, while an evolved surface will look smoother. The size and spatial distribution of pits imply that large heterogeneities exist in the physical, structural or compositional properties of the first few hundred metres below the current nucleus surface.

Cometary science. The morphological diversity of comet 67P/Churyumov-Gerasimenko.

Images of comet 67P/Churyumov-Gerasimenko acquired by the OSIRIS (Optical, Spectroscopic and Infrared Remote Imaging System) imaging system onboard the European Space Agency's Rosetta spacecraft at scales of better than 0.8 meter per pixel show a wide variety of different structures and textures. The data show the importance of airfall, surface dust transport, mass wasting, and insolation weathering for cometary surface evolution, and they offer some support for subsurface fluidization models and mass loss through the ejection of large chunks of material.

Cometary science. On the nucleus structure and activity of comet 67P/Churyumov-Gerasimenko.

Images from the OSIRIS scientific imaging system onboard Rosetta show that the nucleus of 67P/Churyumov-Gerasimenko consists of two lobes connected by a short neck. The nucleus has a bulk density less than half that of water. Activity at a distance from the Sun of >3 astronomical units is predominantly from the neck, where jets have been seen consistently. The nucleus rotates about the principal axis of momentum. The surface morphology suggests that the removal of larger volumes of material, possibly via explosive release of subsurface pressure or via creation of overhangs by sublimation, may be a major mass loss process. The shape raises the question of whether the two lobes represent a contact binary formed 4.5 billion years ago, or a single body where a gap has evolved via mass loss.

R-leaping: accelerating the stochastic simulation algorithm by reaction leaps.

A novel algorithm is proposed for the acceleration of the exact stochastic simulation algorithm by a predefined number of reaction firings (R-leaping) that may occur across several reaction channels. In the present approach, the numbers of reaction firings are correlated binomial distributions and the sampling procedure is independent of any permutation of the reaction channels. This enables the algorithm to efficiently handle large systems with disparate rates, providing substantial computational savings in certain cases. Several mechanisms for controlling the accuracy and the appearance of negative species are described. The advantages and drawbacks of R-leaping are assessed by simulations on a number of benchmark problems and the results are discussed in comparison with established methods.