RESUMO
BACKGROUND: A significant number of individuals with alcohol use disorder remain unresponsive to currently available treatments, which calls for the development of new alternatives. In parallel, psilocybin-assisted therapy for alcohol use disorder has recently yielded promising preliminary results. Building on extant findings, the proposed study is set to evaluate the feasibility and preliminary clinical efficacy of psilocybin-assisted therapy when incorporated as an auxiliary intervention during inpatient rehabilitation for severe alcohol use disorder. Moreover, it intends to pinpoint the modifications in the two core neurocognitive systems underscored by dual-process models of addiction. METHODS: In this double-blind, randomized, placebo-controlled, 7-month parallel-group phase II superiority trial, 62 participants aged 21-64 years will be enrolled to undergo psilocybin-assisted therapy as part of a 4-week inpatient rehabilitation for severe alcohol use disorder. The experimental group will receive a high dose of psilocybin (30 mg), whereas the control group will receive an active placebo dose of psilocybin (5 mg), both within the context of a brief standardized psychotherapeutic intervention drawing from key elements of acceptance and commitment therapy. The primary clinical outcome is the between-group difference regarding the change in percentage of heavy drinking days from baseline to four weeks posthospital discharge, while safety and feasibility metrics will also be reported as primary outcomes. Key secondary assessments include between-group differences in terms of changes in (1) drinking behavior parameters up to six months posthospital discharge, (2) symptoms of depression, anxiety, trauma, and global functioning, (3) neuroplasticity and key neurocognitive mechanisms associated with addiction, and (4) psychological processes and alcohol-related parameters. DISCUSSION: The discussion outlines issues that might arise from our design. TRIAL REGISTRATION: EudraCT 2022-002369-14 and NCT06160232.
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Terapia de Aceitação e Compromisso , Alcoolismo , Humanos , Psilocibina/uso terapêutico , Alcoolismo/tratamento farmacológico , Método Duplo-Cego , Consumo de Bebidas Alcoólicas , Resultado do Tratamento , Ensaios Clínicos Controlados Aleatórios como Assunto , Ensaios Clínicos Fase II como AssuntoRESUMO
INTRODUCTION: People with substance use disorder (SUD) deal with stigmatization in various areas of life, including healthcare system. In this study, we investigated the attitudes of final-year medical students towards SUD people and attempted to understand their influence. METHODS: We conducted a two-stage cluster analysis (hierarchical ascending classification followed by K-means clustering) based on the "beSAAS". We administrated this 23-item questionnaire to 923 final-year medical students in Belgium (response rate = 71,1%). Sociodemographic characteristics were compared between the clusters. RESULTS: Four clusters of students with specific characteristics were identified in this study. The first, "The Inclusives" (including 27,9% of respondents) had the least negative attitudes; they wanted to specialize mainly in psychiatry and gynecology. The second, "The Centrists" (23,6%) consisted mainly of male students. They had many private and professional experiences with substance use and considered themselves less healthy than others did. Most wanted to specialize in pediatrics and general practice. Their attitudes were slightly negative towards people with SUD. The third, "The Moralists" (27,6%), were mainly older, from non-European countries, had the least experience with substance use (or contact mainly in hospitals), had the less high mother's level of education and reported excellent health. They were heading toward other specialties. They had the most stereotypes and moralism, and less treatment optimism. The fourth, "The Specialist care-oriented" (20,8%), were the most in favor of specialized treatment. This group had a higher proportion of Belgian, females, and students who had specific contact with this population. They especially intended to specialize in internal medicine. CONCLUSION: This study revealed 4 profiles of medical students with different attitudes towards SUD people. "The Moralists", including more than a quarter of the respondents, were characterized by strong stereotypes and moralism and little treatment optimism. These clusters could contribute to the design of a learner-centered program aimed at addressing stigma within the main curriculum.
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Atitude do Pessoal de Saúde , Estudantes de Medicina , Transtornos Relacionados ao Uso de Substâncias , Humanos , Estudantes de Medicina/psicologia , Masculino , Feminino , Bélgica , Análise por Conglomerados , Adulto , Inquéritos e Questionários , Adulto Jovem , Educação de Graduação em MedicinaRESUMO
This paper explores the intricate relationship between teen dating violence (TDV) and mental health disorders among adolescents, a demographic particularly susceptible to such issues due to their critical developmental stage. The study underscores how mental health disorders can serve as both risk factors and consequences of TDV, with depression, suicidality, post-traumatic stress disorder (PTSD), substance use, and eating disorders being prominently associated with TDV. The profound and long-lasting repercussions of these mental health issues necessitate a comprehensive strategy to address TDV and its associated mental health implications. This paper advocates for a multi-pronged approach that includes the implementation of prevention programs to educate teenagers about healthy relationships, regular screening for TDV among adolescents for early detection, and the establishment of robust referral systems to ensure victims receive necessary support and treatment. By integrating these strategies, we aim to foster healthier relationships among teenagers, mitigate the incidence of TDV, and safeguard the mental well-being of our adolescents.
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Comportamento do Adolescente , Vítimas de Crime , Violência por Parceiro Íntimo , Transtornos Relacionados ao Uso de Substâncias , Humanos , Adolescente , Saúde Mental , Violência por Parceiro Íntimo/prevenção & controle , Violência por Parceiro Íntimo/psicologia , Fatores de Risco , Comportamento do Adolescente/psicologia , Vítimas de Crime/psicologiaRESUMO
Recent advances in social neuroscience have highlighted the critical role of the cerebellum in social cognition, and especially the posterior cerebellum. Studies have supported the view that the posterior cerebellum builds internal action models of our social interactions to predict how other people's actions will be executed and what our most likely responses are to these actions. This mechanism allows to better anticipate action sequences during social interactions in an automatic and intuitive way and to fine-tune these anticipations, making it easier to understand other's social behaviors and mental states (e.g., beliefs, intentions, traits). In this paper, we argue that the central role of the posterior cerebellum in identifying and automatizing social action sequencing provides a fruitful starting point for investigating social dysfunctions in a variety of clinical pathologies, such as autism, obsessive-compulsive and bipolar disorder, depression, and addiction. Our key hypothesis is that dysfunctions of the posterior cerebellum lead to under- or overuse of inflexible social routines and lack of plasticity for learning new, more adaptive, social automatisms. We briefly review past research supporting this view and propose a program of research to test our hypothesis. This approach might alleviate a variety of mental problems of individuals who suffer from inflexible automatizations that stand in the way of adjustable and intuitive social behavior, by increasing posterior cerebellar plasticity using noninvasive neurostimulation or neuro-guided training programs.
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Cerebelo , Comportamento Social , Humanos , Cerebelo/fisiologiaRESUMO
BACKGROUND: A reduced capacity to mentally simulate future scenarios could be of clinical importance in alcohol use disorder (AUD). However, little is known about the mechanisms underlying episodic future thinking (EFT) impairment in AUD. METHODS: We tested patients with severe AUD using two measures of EFT: the individual's own subjective experience of their imaginings (phenomenology) and the objective number of details included in imagined events, as assessed by an independent observer (examination). The comparison between the two measures allowed us to investigate the extent to which the subjective and objective characteristics of EFT are calibrated in healthy and AUD participants matched for age, education, and gender. The possible impact of cognitive functioning and disturbed mood on EFT measures was also investigated. RESULTS: In terms of objective details of EFT, patients with AUD (n = 40) generated fewer episodic components and more non-episodic components than control participants (n = 40), even when controlling for cognitive functioning. However, self-ratings of phenomenological characteristics indicated that participants with AUD perceived imagined future events at a similar level of detail as control participants. Additionally, there was a significant correlation between objective and subjective measures in healthy individuals but not in the AUD group. A higher depression score in the AUD group was not associated with the EFT measures. CONCLUSIONS: These results suggest a distorted self-assessment of the richness of imagined future events in individuals with AUD. We discuss these apparent limitations in metacognitive abilities and verbal descriptions of imagined events among individuals with AUD and their clinical implications.
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Alcoolismo/psicologia , Cognição , Memória Episódica , Pensamento , Adulto , Alcoolismo/terapia , Estudos de Casos e Controles , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Inquéritos e QuestionáriosRESUMO
Attention deficit hyperactivity disorder (ADHD) is a neuropsychiatric disorder interfering with the normal development of the child. The disorder can be screened at school with the Conners Teacher Rating Scale Revised Short (CTRS-R:S). This scale goes beyond the disorder itself and covers a wider construct, that of abnormal child behavior. This can be understood as a complex system of mutually influencing entities. We analyzed a data set of 525 children in French-speaking primary schools from Belgium, and estimated a network structure, as well as to determine the local dependence of items through Unique Variable Analysis. A reduced network was computed including 15 non-locally dependent items. The structural consistency of the network was not affected by redundant items and was structurally sound. The reduction of the number of variables in network studies is important to improve the investigation of network structures as well as better interpret results from inference measures.
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Transtorno do Deficit de Atenção com Hiperatividade , Transtorno do Deficit de Atenção com Hiperatividade/diagnóstico , Transtorno do Deficit de Atenção com Hiperatividade/psicologia , Bélgica , Criança , Docentes , Humanos , Programas de Rastreamento , Instituições Acadêmicas , Inquéritos e QuestionáriosRESUMO
BACKGROUND: Spontaneous motor responses of approach and avoidance toward stimuli are important in characterizing psychopathological conditions, including alcohol use disorder (AUD). However, divergent results have been reported, possibly due to confounded parameters (e.g., using a symbolic vs. a sensorimotor task, implementation of approach-avoidance as a measure vs. a manipulation). METHODS: We studied whole-body/posturometric changes by using a sensorimotor measure relying on embodied cognition principles to assess forward (approach) and backward (avoidance) spontaneous leaning movements. Over a 12-second period, 51 male patients with AUD and 29 male control participants were instructed to stand still in response to both alcohol and sexual visual content. Patients with AUD were then divided into "abstainers" and "relapsers," depending on their continuous abstinence at 2 weeks postdischarge (obtained via a telephone follow-up interview). The effects of the group, the stimulus type, the experimental period, and their interactions on the posturometric changes were tested using mixed Analyses of variance (ANOVAs), with a significance threshold set at 0.05. RESULTS: Contrary to our expectations, patients and controls did not show significant difference in their forward/backward micromovements while passively viewing alcohol or sexual content (p > 0.1). However, in line with our hypothesis, patients who relapsed several weeks following discharge from the rehabilitation program were significantly more reactive and more likely to lean back during the first seconds of viewing alcohol cues (p = 0.002). Further, "relapsers" were more likely to lean forward during exposure to sexual content than participants who remained abstinent (p < 0.001). CONCLUSIONS: Among individuals with AUD, there are distinct pattern of spontaneous movements that differentiate "abstainers" and "relapsers," findings that can be understood in light of existing data and theories on action tendencies.
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Consumo de Bebidas Alcoólicas/psicologia , Alcoolismo/psicologia , Estimulação Luminosa/métodos , Equilíbrio Postural/fisiologia , Comportamento Sexual/fisiologia , Comportamento Sexual/psicologia , Adulto , Abstinência de Álcool/psicologia , Abstinência de Álcool/tendências , Consumo de Bebidas Alcoólicas/tendências , Alcoolismo/diagnóstico , Seguimentos , Humanos , Masculino , Pessoa de Meia-Idade , Movimento/fisiologia , Recidiva , AutorrelatoRESUMO
Background: While often confused, fatigue (as opposed to sleepiness) mostly requires rest, not sleep, to recover from. Clinical evaluations of fatigue mainly rely on assessments of symptom intensity, however without taking into account the need to engage in behavioral countermeasures. We therefore developed an 8-item 4-point Likert scale (the Brugmann Fatigue Scale; BFS) sharing a similar conceptual background with the Epworth Sleepiness Scale (ESS), assessing mental and physical fatigue and focusing specifically on rest propensity. Methods: Out of 496 consecutive patients addressed to the sleep unit of an academic hospital, we selected a sample of 295 hypnotic-free subjects (122 females). The present study examines (a) the psychometric properties of the BFS and (b) measurement invariance regarding perceived sleep quality, in parallel with common sleepiness and fatigue scales (ESS and Fatigue Severity Scale; FSS). In addition, (c) correlations of the BFS with clinical scales and polysomnographic variables were explored descriptively. Results: Rasch analyses revealed that the BFS possesses sound psychometric characteristics (rating scale functioning, item fit, dimensionality and measurement invariance) allowing for valid, reliable, linear and unidimensional measurement of mental and physical rest propensity, irrespective of perceived sleep quality, age, or gender. In addition, the BFS was significantly correlated to periodic limb movements during sleep and inversely to REM sleep duration. For both mental and physical subscales, scores above 6 are proposed as cutoff values. Conclusion: In analogy to the ESS, the BFS shows to be a unique and precise instrument assessing symptomatic fatigue with respect to rest propensity.
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Fadiga/diagnóstico , Fadiga/fisiopatologia , Sono/fisiologia , Sonolência , Adolescente , Adulto , Idoso , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Polissonografia , Psicometria , Reprodutibilidade dos Testes , Sono REM/fisiologia , Vigília/fisiologia , Adulto JovemRESUMO
The purpose of this study was to verify the hypothesis that there is an association between peritraumatic dissociation (PD) and post-traumatic stress disorder (PTSD) in individuals exposed to recurrent armed conflict. More specifically, we sought to evaluate whether PD differentially predicts PTSD according to the degree of exposure to the potentially traumatic event (PTE), the level of education, and gender. A total of 120 individuals between 17 and 75 years of age, including 51 women, completed the Traumatic Events List, the Peritraumatic Dissociative Experiences Questionnaire, and the French version of the Posttraumatic Stress Disorder Checklist Scale, as well as a questionnaire providing information regarding sociodemographic details. The group of participants with high scores for PD had significantly more PTSD. PD differentially predicts PTSD depending on the level of education and gender of the individual. Those who had been physically assaulted and raped, as well as the less educated, were more likely to be dissociated during PTE· exposure compared to witnesses and those with a higher level of education. The primary target population for prevention and early management should comprise individuals with high levels of PD, low levels of education, and women.
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Conflitos Armados , Transtornos Dissociativos/epidemiologia , Transtornos de Estresse Pós-Traumáticos/epidemiologia , Adolescente , Adulto , Idoso , República Democrática do Congo/epidemiologia , Feminino , Humanos , Acontecimentos que Mudam a Vida , Masculino , Pessoa de Meia-Idade , Escalas de Graduação PsiquiátricaRESUMO
Nowadays, sports betting has become increasingly available and easy to engage in. Here we examined the neural responses to stimuli that represent sporting events available for betting as compared to sporting events without a gambling opportunity. We used a cue exposure task in which football (soccer) fans (N = 42) viewed cues depicting scheduled football games that would occur shortly after the scanning session. In the "betting" condition, participants were instructed to choose, at the end of each block, the game (and the team) they wanted to bet on. In the "watching" condition, participants chose the game they would prefer to watch. After the scanning session, participants completed posttask rating questionnaires assessing, for each cue, their level of confidence about the team they believed would win and how much they would enjoy watching the game. We found that stimuli representing sport events available for betting elicited higher fronto-striatal activation, as well as higher insular cortex activity and functional connectivity, than sport events without a gambling opportunity. Moreover, games rated with more confidence towards the winning team resulted in greater brain activations within regions involved in affective decision-making (ventromedial prefrontal cortex), cognitive inhibitory control (medial and superior frontal gyri) and reward processing (ventral and dorsal striatum). Altogether, these novel findings offer a sensible simulation of how the high availability of sports betting in today's environment impacts on the reward and cognitive control systems. Future studies are needed to extend the present findings to a sample of football fans that includes a samilar proportion of female and male participants.
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Encéfalo/fisiopatologia , Jogo de Azar/fisiopatologia , Futebol , Percepção Visual/fisiologia , Encéfalo/diagnóstico por imagem , Mapeamento Encefálico , Sinais (Psicologia) , Feminino , Jogo de Azar/diagnóstico por imagem , Jogo de Azar/psicologia , Humanos , Imageamento por Ressonância Magnética , Masculino , Estimulação Luminosa , Recompensa , Futebol/psicologia , Adulto JovemRESUMO
A great number of individuals with persistent problematic gambling behavior exhibit alexithymic tendencies, greater impulsivity, impaired working memory and poor mood. However, the relationship between these cognitive, affective and personality factors in problem gambling remains poorly understood. Our aim was to investigate multiple pathways of the alexithymia and problem gambling relationship. One hundred and six male subjects with different levels of gambling problem severity were recruited. Alexithymia, impulsivity and verbal working memory were evaluated, and their relationships to disordered gambling was examined by means of a path analysis. Results indicate that alexithymia is related to an increase in the severity of gambling indirectly, i.e., through distress severity. In addition, a rise of alexithymic tendencies was also associated with problem gambling severity through enhanced impulsivity that directly increased distress. Working memory capacity failed to significantly impact our path model. Overall, our findings contribute a new finding to the literature by highlighting the importance of alexithymia, in addition to impulsivity, in the understanding of gambling problem severity and its clinical course.
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Sintomas Afetivos/psicologia , Jogo de Azar/psicologia , Adulto , Afeto/fisiologia , Comportamento Aditivo/psicologia , Feminino , Humanos , Comportamento Impulsivo/fisiologia , Masculino , Memória de Curto Prazo/fisiologiaRESUMO
This study investigated the ability of individuals with disordered gambling to imagine future events. Problem gamblers (n=35) and control participants (n=35) were asked to imagine positive and negative future events for three temporal distances (one week, one year, 5-10years). Then, a variety of phenomenological aspects of their future thoughts (e.g., sensory and contextual details, autonoetic consciousness) were rated. Compared to control subjects, problem gamblers generated fewer positive and negative events across all temporal distances, an impairment that was correlated to verbal fluency scores. Furthermore, problem gamblers rated imagined events as containing fewer sensory and contextual details, and lacking autonoetic consciousness. These findings demonstrate that problem gambling is associated with a reduced future-oriented mental time travel ability and, in particular, with diminished autonoetic consciousness when imagining future events.
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Estado de Consciência/fisiologia , Ego , Jogo de Azar/fisiopatologia , Imaginação/fisiologia , Memória Episódica , Adulto , Feminino , Humanos , Masculino , Pessoa de Meia-IdadeRESUMO
Casino venues are often characterized by "warm" colors, reward-related sounds, and the presence of others. These factors have always been identified as a key factor in energizing gambling. However, few empirical studies have examined their impact on gambling behaviors. Here, we aimed to explore the impact of combined red light and casino-related sounds, with or without the presence of another participant, on gambling-related behaviors. Gambling behavior was estimated with the Iowa Gambling Task (IGT). Eighty non-gamblers participants took part in one of four experimental conditions (20 participants in each condition); (1) IGT without casino-related sound and under normal (white) light (control), (2) IGT with combined casino-related sound and red light (casino alone), (3) IGT with combined casino-related sound, red light and in front of another participant (casino competition-implicit), and (4) IGT with combined casino-related sound, red light and against another participant (casino competition-explicit). Results showed that, in contrast to the control condition, participants in the three "casino" conditions did not exhibit slower deck selection reaction time after losses than after rewards. Moreover, participants in the two "competition" conditions displayed lowered deck selection reaction time after losses and rewards, as compared with the control and the "casino alone" conditions. These findings suggest that casino environment may diminish the time used for reflecting and thinking before acting after losses. These findings are discussed along with the methodological limitations, potential directions for future studies, as well as implications to enhance prevention strategies of abnormal gambling.
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Estimulação Acústica , Sinais (Psicologia) , Jogo de Azar/psicologia , Controle Interno-Externo , Música , Recompensa , Adulto , Comportamento Aditivo/psicologia , Feminino , Humanos , Iowa , Masculino , Tempo de Reação , Meio Social , Percepção do Tempo , Adulto JovemRESUMO
BACKGROUND: Alcohol dependence is associated with poor decision-making under ambiguity, that is, when decisions are to be made in the absence of known probabilities of reward and loss. However, little is known regarding decisions made by individuals with alcohol dependence in the context of known probabilities (decision under risk). In this study, we investigated the relative contribution of these distinct aspects of decision-making to alcohol dependence. METHODS: Thirty recently detoxified and sober asymptomatic alcohol-dependent individuals and 30 healthy control participants were tested for decision-making under ambiguity (using the Iowa Gambling Task[IGT]) and decision-making under risk (using the Cups Task and Coin Flipping Task). We also tested their capacities for working memory storage (digit span forward) and dual tasking (operation span task). RESULTS: Compared to healthy control participants, alcohol-dependent individuals made disadvantageous decisions on the IGT, reflecting poor decisions under ambiguity. They also made more risky choices on the Cups and Coin Flipping Tasks reflecting poor decision-making under risk. In addition, alcohol-dependent participants showed some working memory impairments, as measured by the dual tasking, and the degree of this impairment correlated with high-risk decision-making, thus suggesting a relationship between processes subserving working memory and risky decisions. CONCLUSIONS: These results suggest that alcohol-dependent individuals are impaired in their ability to decide optimally in multiple facets of uncertainty (i.e., both risk and ambiguity) and that at least some aspects of these deficits are linked to poor working memory processes.
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Alcoolismo/psicologia , Tomada de Decisões , Assunção de Riscos , Incerteza , Adulto , Estudos de Casos e Controles , Feminino , Humanos , Masculino , Memória de Curto Prazo , Desempenho Psicomotor , Adulto JovemRESUMO
AIMS: While the relationship between chronic exposure to alcohol and neurobiological damage is well established, deleterious brain effects of binge drinking in youths have only recently been studied. METHODS: Narrative review of studies of brain disturbances associated with binge drinking as assessed by neuroimaging (EEG and IRMf techniques in particular) in adolescent drinkers. RESULTS: Some major points still deserved to be investigated; directions for future research are suggested. CONCLUSIONS: Information and prevention programs should emphasize that binge drinking is not just inoffensive social fun, but if carried on, may contribute to the onset of cerebral disturbances possibly leading to alcohol dependence later in life.
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Transtornos do Sistema Nervoso Induzidos por Álcool/patologia , Transtornos do Sistema Nervoso Induzidos por Álcool/fisiopatologia , Intoxicação Alcoólica/patologia , Intoxicação Alcoólica/fisiopatologia , Neuroimagem , Adolescente , HumanosRESUMO
Impaired insight into behavior may be one of the clinical characteristics of pathological gambling. In the present study, we tested whether the capacity to evaluate accurately the quality of one's own decisions during a non-gambling task was impaired in problem gamblers. Twenty-five problem gamblers and 25 matched healthy participants performed an artificial grammar-learning paradigm, in which the quality of choice remains uncertain throughout the task. After each trial of this task, participants had to indicate how confident they were in the grammaticality judgements using a scale ranging from 1 (low confidence) to 7 (high confidence). Results showed that (i), problem gamblers' performance on the grammaticality test was lower than controls'; (ii) there was a significant correlation between grammaticality judgments and confidence for control participants, which indicates metacognitive insight and the presence of conscious knowledge; (iii) this correlation was not significant in problem gamblers, which suggests a disconnection between performance and confidence in this group. These findings suggest that problem gamblers are impaired in their metacognitive abilities on a non-gambling task, which suggests that compulsive gambling is associated with poor insight as a general factor. Clinical interventions tailored to improve metacognition in gambling could be a fruitful avenue of research in order to prevent pathological gambling.
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Comportamento Aditivo , Transtornos Cognitivos/complicações , Jogo de Azar/psicologia , Adulto , Estudos de Casos e Controles , Comportamento de Escolha , Feminino , Humanos , Julgamento , Testes de Linguagem , Masculino , Autoimagem , Adulto JovemRESUMO
BACKGROUND: People who use illicit drugs cumulate medical and psychosocial vulnerabilities, justifying a rounded health approach. Both caregivers and patients can form barriers to accessing care, leading to inadequate care. This study aimed to identify the needs and expectations of such patients in general practice. METHODS: Qualitative research was conducted using semi-structured interviews with 23 people with illicit substance use disorder in Brussels in 2020. Multicentric recruitment was conducted to obtain a heterogeneous mix of sociodemographic profiles and care trajectories. Thematic analysis was performed using RQDA package software. RESULTS: Participants highlighted several vulnerabilities. These include the presence of significant self-stigmatization and guilt, sometimes to the extent of self-dehumanization, even after years of care, and overdoses masking suicide attempts and early memory disorders. Multiple substance use, smoking in almost all participants, and misuse of benzodiazepines were also noted. The majority of participants expressed the need for an open-minded, non-stigmatizing and empathic GP with a holistic approach that could guide them throughout their life course. The competencies of the GPs in the field of addiction seemed secondary to the participants. Knowledge and good collaboration with the mental health network were assets. CONCLUSION: Participants expressed the need for GPs with good interpersonal skills, including a non-stigmatizing attitude. The care coordinator role of the GP was highlighted as a key element, as it was a holistic approach focusing on global health (including the social determinants of health) and not only on substance use disorders.
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Medicina Geral , Pesquisa Qualitativa , Transtornos Relacionados ao Uso de Substâncias , Humanos , Feminino , Masculino , Transtornos Relacionados ao Uso de Substâncias/epidemiologia , Transtornos Relacionados ao Uso de Substâncias/psicologia , Adulto , Bélgica/epidemiologia , Pessoa de Meia-Idade , Estigma Social , Adulto Jovem , Entrevistas como Assunto , Drogas IlícitasRESUMO
Lack of self-awareness of one's decisions remains an understudied and elusive topic in the addiction literature. The present study aimed at taking a first step towards addressing this difficult subject through the use of a combination of behavioral procedures. Here, we explored the association between a metacognitive process (the ability to reflect and evaluate the awareness of one's own decision) and poor performance on the Iowa Gambling Task (IGT) in a group of pathological gamblers (PG; n = 30), and in a comparison group (n = 35). This metacognitive process was assessed during the IGT with the post-decision wagering procedure, while a number of potential confounds (i.e., reward/loss sensitivity, dual-tasking) were controlled for. Results showed that: (1) Initial performance enhancement of the control group on IGT occurred without explicit knowledge of the task, thus confirming its implicit character; (2) compared to controls, performance of PG on the IGT failed to increase during the task; (3) taking into account increased reward sensitivity and decreased loss sensitivity as well as poorer dual-tasking in pathological gamblers, PG tended to exhibit a bias in evaluating their own performance on the IGT by maximizing their wagers independently of selecting advantageous decks. Our findings suggest that biased metacognition may affect pathological gamblers, leading to disadvantageous post-decision wagering, which is in turn linked to impaired decision making under ambiguity. Perhaps this deficit reflects the impaired insight and self-awareness that many addicts suffer from, thus providing a novel approach for capturing and measuring this impairment, and for investigating its possible causes.