26,019 research outputs found

    Social Network Based Substance Abuse Prevention via Network Modification (A Preliminary Study)

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    Substance use and abuse is a significant public health problem in the United States. Group-based intervention programs offer a promising means of preventing and reducing substance abuse. While effective, unfortunately, inappropriate intervention groups can result in an increase in deviant behaviors among participants, a process known as deviancy training. This paper investigates the problem of optimizing the social influence related to the deviant behavior via careful construction of the intervention groups. We propose a Mixed Integer Optimization formulation that decides on the intervention groups, captures the impact of the groups on the structure of the social network, and models the impact of these changes on behavior propagation. In addition, we propose a scalable hybrid meta-heuristic algorithm that combines Mixed Integer Programming and Large Neighborhood Search to find near-optimal network partitions. Our algorithm is packaged in the form of GUIDE, an AI-based decision aid that recommends intervention groups. Being the first quantitative decision aid of this kind, GUIDE is able to assist practitioners, in particular social workers, in three key areas: (a) GUIDE proposes near-optimal solutions that are shown, via extensive simulations, to significantly improve over the traditional qualitative practices for forming intervention groups; (b) GUIDE is able to identify circumstances when an intervention will lead to deviancy training, thus saving time, money, and effort; (c) GUIDE can evaluate current strategies of group formation and discard strategies that will lead to deviancy training. In developing GUIDE, we are primarily interested in substance use interventions among homeless youth as a high risk and vulnerable population. GUIDE is developed in collaboration with Urban Peak, a homeless-youth serving organization in Denver, CO, and is under preparation for deployment

    Clinical psychology of Internet addiction: a review of its conceptualization, prevalence, neuronal processes, and implications for treatment

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    Research into Internet addiction (IA) has grown rapidly over the last decade. The topic has generated a great deal of debate, particularly in relation to how IA can be defined conceptually as well as the many methodological limitations. The present review aims to further elaborate and clarify issues that are relevant to IA research in a number of areas including: definition and characterization, incidence and prevalence rates, associated neuronal processes, and implications for treatment, prevention, and patient-specific considerations. It is concluded that there is no consensual definition for IA. Prevalence rates among nationally representative samples across several countries vary greatly (from 1% to 18.7%), most likely reflecting the lack of methodological consistency and conceptual rigor of the studies. The overlaps between IA and other more traditional substance-based addictions and the possible neural substrates implicated in IA are also highlighted. In terms of treatment and prevention, both psychological and pharmacological treatments are examined in light of existing evidence alongside particular aspects inherent to the patient perspective. Based on the evidence analyzed, it is concluded that IA may pose a serious health hazard to a minority of people

    Psychological Adjustment and Caregive Attributes in Children Referred to Contact House

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    Child abuse and neglect (CAN) encompasses a heterogenous group of adverse practices with devastating personal, social, educational, health, legal and welfare consequences. The term child abuse and neglect covers four types maltreatment: physical abuse, emotional abuse, sexual abuse, and neglect, with many children experiencing a combination of these types. Australian child protection notifications have more than doubled in the 5-year period to 2004. Of most concern is that, of all the Australian States and Territories, Queensland has the highest rate of substantiated cases with 14.1 per 1,000 children (AIHW, 2006). Childhood abuse and neglect can have profound short- and long-term effects. Children with a history of abuse and neglect have been shown to experience insecure attachment, developmental delays, diminished social skills, violent behaviour and learning problems. Previous studies have also found that abused and neglected children frequently experience a higher incidence of a diverse range of adverse mental health outcomes including helplessness and sadness, lowered self-esteem and post traumatic stress disorder. However, relatively few studies have examined the psychological adjustment of children in more immediate terms especially within an Australian context. Furthermore, adults experiencing CAN during childhood frequently exhibit diverse psychopathologies. The variability in adverse consequences suggests the existence of mediating and moderating factors influencing the level of distress experienced by children. While associations have been made between factors surrounding the type of abuse, the child’s age and gender and negative outcomes, little is known about the role of the child’s non-offending caregiver and the relationship between caregiver attributes and the level of distress experienced by the child. A primary aim of this study was to investigate caregiver attributes and the psychological adjustment of children referred to a non-government treatment centre. This specific aims were: (i) to describe the psychological adjustment of children who have experienced abuse and/or neglect (ii) to compare the psychological functioning of children presenting for treatment with a community sample of children (iii) to describe the level of psychosocial functioning of the caregivers in the clinical group across a range of psychosocial and parenting practice variables and (iv) to explore the relationship between demographic variables, factors relating to the abuse and neglect, and caregiver variables, which may predict, mediate, or moderate the child’s psychological adjustment. In addition the study aimed to establish a database for future research into treatment outcomes. Through the inclusion of a comparison community sample, this study provided evidence to complement existing research and develop a more complete picture of families living with and without CAN. The findings also offer preliminary evidence regarding the effectiveness of treatment and underscore the need for ongoing evaluation of service outcomes to optimise the quality of life for children and families affected by CAN

    The Role of Mindfulness in the Regulation of Behavior Among Those Prone to Negative Urgency

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    Negative emotions can be challenging to regulate, and for some individuals can lead to failures of behavior regulation. The present study is an initial effort to explore the role that mindfulness may play in fostering effective behavior regulation among those prone to high negative urgency (NU). Eighty undergraduate students were recruited based on their high or low scores of NU. First, participants completed a self-report measure of mindfulness (Mindful Attention Awareness Scale; MAAS), an Emotional Go/No Go task in an fMRI scanner, and then reported alcohol consumption. Results showed that those with high in NU had low levels of mindfulness compared to those low in NU. Mindfulness predicted substance use at the one- month follow-up after controlling for the predictive roles of NU and gender. Further exploration of the underlying neural mechanisms of mindfulness is needed to better understand its impact on emotion- and self-regulatory processes, especially during difficult emotional experience

    Towards the Design of Evidence-based Mental Health Information Systems: A Preliminary Literature Review

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    Mental disorders belong to a significant and serious disease pattern with an increasing prevalence worldwide. Due to limited health personnel and financial resources, scalability of mental health services and tailored care of individuals are two key barriers for a successful treatment. Mental health information systems (MHIS) are expected to address these barriers and thus, it is of utmost importance to understand the underlying technological rules that guide the design of evidence-based MHIS interventions. However, up till now, there is no systematic literature review on the anatomy of MHIS that quantitatively tests the effects of MHIS service configurations on treatment success. We therefore conducted, as a very first step a preliminary review on MHIS in this research-in-progress. This review has not only the objective to present state-of-the-art on MHIS but also to propose a set of fine-grained evaluation criteria relevant for future work on the design of evidence-based MHIS interventions

    Internet addiction: a systematic review of epidemiological research for the last decade

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    In the last decade, Internet usage has grown tremendously on a global scale. The increasing popularity and frequency of Internet use has led to an increasing number of reports highlighting the potential negative consequences of overuse. Over the last decade, research into Internet addiction has proliferated. This paper reviews the existing 68 epidemiological studies of Internet addiction that (i) contain quantitative empirical data, (ii) have been published after 2000, (iii) include an analysis relating to Internet addiction, (iv) include a minimum of 1000 participants, and (v) provide a full-text article published in English using the database Web of Science. Assessment tools and conceptualisations, prevalence, and associated factors in adolescents and adults are scrutinised. The results reveal the following. First, no gold standard of Internet addiction classification exists as 21 different assessment instruments have been identified. They adopt official criteria for substance use disorders or pathological gambling, no or few criteria relevant for an addiction diagnosis, time spent online, or resulting problems. Second, reported prevalence rates differ as a consequence of different assessment tools and cut-offs, ranging from 0.8% in Italy to 26.7% in Hong Kong. Third, Internet addiction is associated with a number of sociodemographic, Internet use, and psychosocial factors, as well as comorbid symptoms and disorder in adolescents and adults. The results indicate that a number of core symptoms (i.e., compulsive use, negative outcomes and salience) appear relevant for diagnosis, which assimilates Internet addiction and other addictive disorders and also differentiates them, implying a conceptualisation as syndrome with similar etiology and components, but different expressions of addictions. Limitations include the exclusion of studies with smaller sample sizes and studies focusing on specific online behaviours. Conclusively, there is a need for nosological precision so that ultimately those in need can be helped by translating the scientific evidence established in the context of Internet addiction into actual clinical practice

    A Roadmap for Change: Federal Policy Recommendations for Addressing the Criminilization of LGBT People and People Living with HIV

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    Each year in the United States, thousands of lesbian, gay, bisexual, transgender, Two Spirit, queer, questioning and gender non-conforming (LGBT) people and people living with HIV come in contact with the criminal justice system and fall victim to similar miscarriages of justice.According to a recent national study, a startling 73% of all LGBT people and PLWH surveyed have had face-to-face contact with police during the past five years.1 Five percent of these respondents also report having spent time in jail or prison, a rate that is markedly higher than the nearly 3% of the U.S. adult population whoare under some form of correctional supervision (jail, prison, probation, or parole) at any point in time.In fact, LGBT people and PLWH, especially Native and LGBT people and PLWH of color, aresignificantly overrepresented in all aspects of the penal system, from policing, to adjudication,to incarceration. Yet their experiences are often overlooked, and little headway has been madein dismantling the cycles of criminalization that perpetuate poor life outcomes and push already vulnerable populations to the margins of society.The disproportionate rate of LGBT people and PLWH in the criminal system can best be understoodin the larger context of widespread and continuing discrimination in employment, education, socialservices, health care, and responses to violence
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