Stefan T. Radev  Ulf K. Mertens  Andreas Voss  Ullrich Köthe 《The British journal of mathematical and statistical psychology》2020,73(1):23-43

Complex simulator-based models with non-standard sampling distributions require sophisticated design choices for reliable approximate parameter inference. We introduce a fast, end-to-end approach for approximate Bayesian computation (ABC) based on fully convolutional neural networks. The method enables users of ABC to derive simultaneously the posterior mean and variance of multidimensional posterior distributions directly from raw simulated data. Once trained on simulated data, the convolutional neural network is able to map real data samples of variable size to the first two posterior moments of the relevant parameter's distributions. Thus, in contrast to other machine learning approaches to ABC, our approach allows us to generate reusable models that can be applied by different researchers employing the same model. We verify the utility of our method on two common statistical models (i.e., a multivariate normal distribution and a multiple regression scenario), for which the posterior parameter distributions can be derived analytically. We then apply our method to recover the parameters of the leaky competing accumulator (LCA) model and we reference our results to the current state-of-the-art technique, which is the probability density estimation (PDA). Results show that our method exhibits a lower approximation error compared with other machine learning approaches to ABC. It also performs similarly to PDA in recovering the parameters of the LCA model.  相似文献   

    

Robin S. Everhart  Amber D. Haley  Gillian G. Regan  Stephanie Romo  Katherine W. Dempster  D. Jeremy Barsell  Rosalie Corona  Suzanne E. Mazzeo  Michael S. Schechter  The Engaging Richmond Team 《American journal of community psychology》2020,66(3-4):222-231

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István Tóth-Király  Beáta Bőthe  Anett Neszta Márki  Adrien Rigó  Gábor Orosz 《European journal of social psychology》2019,49(6):1190-1205

Rooted in Self-Determination Theory, the present research sought to investigate whether the “bright” and “dark” side of human functioning (need satisfaction and need frustration, respectively) would, as determinants, differentially predict harmonious passion (HP) and obsessive passion (OP) for screen-based activities such as Facebook use, TV series watching, online gaming, and smartphone gaming. For this purpose, four cross-sectional studies were carried out (N_total = 1,065). Results showed that, across all activities, need satisfaction was negatively related to OP, but not HP. A similar pattern emerged with need frustration: It was positively related to OP, but not HP. Moreover, even after controlling for the self-reported amount of time spent on the activities, HP predicted adaptive, activity-specific outcomes, whereas OP predicted maladaptive ones. These findings suggest that general need satisfaction may be a protective factor against the compensatory function of OP, but need frustration may be a potential risk factor of OP and both should be taken into account in the case of passion for screen-based activities.  相似文献   

    

José A. Bauermeister  Emily S. Pingel  Triana Kazaleh Sirdenis  Jack Andrzejewski  Gage Gillard  Gary W. Harper  the Michigan Forward in Enhancing Research  Community Equity Coalition 《American journal of community psychology》2017,60(1-2):215-228

HIV/STI incidence has shifted to a younger demographic, comprised disproportionately of gay and bisexual men, transgender women, and people of color. Recognizing the importance of community organizing and participatory engagement during the intervention planning process, we describe the steps taken to engage diverse constituents (e.g., youth and practitioners) during the development of a structural‐level HIV/STI prevention and care initiative for young sexual and gender minorities in Southeast Michigan. Our multi‐sector coalition (MFierce; Michigan Forward in Enhancing Research and Community Equity) utilized a series of community dialogues to identify, refine, and select programmatic strategies with the greatest potential. Evaluation data (N = 173) from the community dialogues highlighted constituents’ overall satisfaction with our elicitation process. Using a case study format, we describe our community dialogue approach, illustrate how these dialogues strengthened our program development, and provide recommendations that may be used in future community‐based program planning efforts.  相似文献   

    

Susan D. McMahon  Samantha Reaves  Elizabeth A. McConnell  Eric Peist  Linda Ruiz  the APA Task Force on Classroom Violence Directed Against Teachers 《American journal of community psychology》2017,60(3-4):502-515

Teacher‐directed violence is a common, yet understudied, phenomenon. Perpetrators of violence against teachers include not just students, but also administrators, parents, and colleagues. Administrators are key stakeholders when it comes to shaping school climate and safety that can reduce or increase the negative impact of violence against teachers. In this study, 237 teachers’ qualitative responses from a larger sample of 2,431 anonymous, online survey responses were examined to better understand their experiences with incidents of violence and how administrators played a role in these experiences. Results reveal that lack of administrator support negatively impacts teachers at multiple levels, including teachers’ feelings (individual); challenges associated with addressing issues related to students, parents, and other perpetrators (interpersonal); and school systems and policies (organizational). This study highlights the importance of administrative support and illustrates how administrators’ actions and inactions can have ripple effects at each level of the school microcosm. Implications for research, practice, and policy are discussed.  相似文献   

    

Steven D. Vannoy MPH  PhD  Bonnie K. Andrews MPH  David C. Atkins PhD  Katherine A. Dondanville PsyD  Stacey Young‐McCaughan RN  PhD  Alan L. Peterson PhD  the STRONG STAR Consortium 《Suicide & life-threatening behavior》2017,47(6):723-728

Previous research in US Army Soldiers shows rates of mental health concerns as two to four times higher on anonymous surveys than on postdeployment health assessments. In this study, Soldiers presenting for health reassessment completed two questionnaires on suicide risk factors: one linked to the health assessment and one anonymous. About 5.1% of respondents reported suicide ideation on the anonymous questionnaire, 3.0% on the linked questionnaire, and 0.9% on the health reassessment. About 56.4% who reported suicide ideation anonymously told nobody of their thoughts. Current screening procedures identify only one in seven Soldiers experiencing suicide ideation and highlight the need for alternative risk‐detection strategies.  相似文献   

    

Leann E. Smith  Carol E. Akai  Lorraine V. Klerman  Bette R. Keltner  The Centers for the Prevention of Child Neglect 《Infant mental health journal》2010,31(4):455-466

The present study examined the detection of early developmental delays of high‐risk infants by first‐time mothers in a community sample of families (N = 451). About half of the mothers were adolescents at time of childbirth, and two thirds reported household incomes below $20,000 annually. Children were assessed at 12 and 24 months of age on standardized measures of cognitive, language, adaptive, and socioemotional development. According to the Individuals with Disabilities Education Act (PL101‐476) guidelines, about 1 in 4 children was eligible for intervention services at 12 months, and about 1 in 3 children was eligible at 24 months. Despite receiving regular medical services, mothers reported that very few eligible children (2% at 12 months and 9% at 24 months) were identified by medical professionals as having any problems that could interfere with development. Much like medical professionals, few mothers were appropriately worried about development, and the likelihood of expressing concerns was related to mothers' knowledge about infant development. These findings highlight the need for medical providers to frequently screen high‐risk children and for parents to become more knowledgeable about infant development.  相似文献   

    

Nils S. van den Berg  Edward H. F. de Haan  Rients B. Huitema  Jacoba M. Spikman  the visual brain group 《Journal of Neuropsychology》2021,15(3):516-532

Deficits in facial emotion recognition occur frequently after stroke, with adverse social and behavioural consequences. The aim of this study was to investigate the neural underpinnings of the recognition of emotional expressions, in particular of the distinct basic emotions (anger, disgust, fear, happiness, sadness and surprise). A group of 110 ischaemic stroke patients with lesions in (sub)cortical areas of the cerebrum was included. Emotion recognition was assessed with the Ekman 60 Faces Test of the FEEST. Patient data were compared to data of 162 matched healthy controls (HC’s). For the patients, whole brain voxel-based lesion–symptom mapping (VLSM) on 3-Tesla MRI images was performed. Results showed that patients performed significantly worse than HC’s on both overall recognition of emotions, and specifically of disgust, fear, sadness and surprise. VLSM showed significant lesion–symptom associations for FEEST total in the right fronto-temporal region. Additionally, VLSM for the distinct emotions showed, apart from overlapping brain regions (insula, putamen and Rolandic operculum), also regions related to specific emotions. These were: middle and superior temporal gyrus (anger); caudate nucleus (disgust); superior corona radiate white matter tract, superior longitudinal fasciculus and middle frontal gyrus (happiness) and inferior frontal gyrus (sadness). Our findings help in understanding how lesions in specific brain regions can selectively affect the recognition of the basic emotions.  相似文献   

    

Editorial Team 《Psychologica Belgica》2021,61(1):18

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Joe Bathelt  Susan E Gathercole  Sally Butterfield  the CALM team  Duncan E Astle 《Developmental science》2018,21(5)

Literacy and numeracy are important skills that are typically learned during childhood, a time that coincides with considerable shifts in large‐scale brain organization. However, most studies emphasize focal brain contributions to literacy and numeracy development by employing case‐control designs and voxel‐by‐voxel statistical comparisons. This approach has been valuable, but may underestimate the contribution of overall brain network organization. The current study includes children (N = 133 children; 86 male; mean age = 9.42, SD = 1.715; age range = 5.92–13.75y) with a broad range of abilities, and uses whole‐brain structural connectomics based on diffusion‐weighted MRI data. The results indicate that academic attainment is associated with differences in structural brain organization, something not seen when focusing on the integrity of specific regions. Furthermore, simulated disruption of highly‐connected brain regions known as hubs suggests that the role of these regions for maintaining the architecture of the network may be more important than specific aspects of processing. Our findings indicate that distributed brain systems contribute to the etiology of difficulties with academic learning, which cannot be captured using a more traditional voxel‐wise statistical approach.  相似文献