Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 13 de 13
Filtrar
Más filtros











Base de datos
Intervalo de año de publicación
1.
Assessment ; : 10731911241275256, 2024 Sep 11.
Artículo en Inglés | MEDLINE | ID: mdl-39258834

RESUMEN

In his commentary, Klonsky outlines several arguments for why preregistration mandates (PRMs) will have a negative impact on the field. Klonsky's overarching concern is that when preregistration ceases to be a tool for research and becomes an indicator of quality itself (a primary example being preregistration badges), it loses its intended benefits. Separate from his concerns surrounding policies such as preregistration badges, Klonsky also critiques the practice of preregistration itself, arguing that it can impede our use of other valuable research tools (e.g., multiverse analyses and exploratory analyses). We provide a response to Klonsky's concerns about preregistration and related policies. First, we provide conceptual clarification on the purpose of preregistration, which was missing in Klonsky's commentary. Second, with a clearer conceptual framework, we not only highlight where some of Klonsky's concerns are warranted but also highlight where Klonsky's concerns, critiques, and proposed alternatives to the use of preregistration fall short. Third, with this conceptual understanding of preregistration, we briefly outline some challenges related to the effective implementation of preregistration in psychological science.

2.
Personal Disord ; 2024 Aug 15.
Artículo en Inglés | MEDLINE | ID: mdl-39146064

RESUMEN

The objective of this preregistered study was to gather evidence on training and clinical experiences offered by clinical psychology doctoral programs on the treatment of antagonism-a construct from the personality and psychopathology literature that captures individual differences in aggressiveness, callousness, grandiosity, domineering, and manipulativeness. We surveyed current graduate students (N = 376) in APA-accredited clinical psychology doctoral programs (Mage = 28.4; 83.2% female; 65.2% White) about their experiences in training and treatment of antagonistic patients (ANT-patients) as well as experiences with patients with predominant negative affect (NA; e.g., anxious and depressed). Students reported significantly less training to treat antagonism compared to NA (|ds| = 0.43-2.88), as well as lower rates of direct clinical experience, generally poorer treatment experiences, and stronger countertransference reactions (|ds| = 0.53-1.40). These discrepancies were especially large for adult-focused students compared to child/adolescent-focused students. In fact, adult-focused students reported a mean competency rating of M = 1.71, between the scalar points not competent at all (1) and a little bit competent (2). Overall, these results indicate a lack of training and competence to treat antagonism among current graduate students, especially adult-focused students. We believe the crux of this issue is a field-wide lack of robust empirical work on antagonism treatments (for adults). Moving forward, we implore researchers and funding agencies to help address this substantial gap, which is both an ethical and practical imperative. (PsycInfo Database Record (c) 2024 APA, all rights reserved).

3.
Biol Psychiatry ; 2024 Jul 18.
Artículo en Inglés | MEDLINE | ID: mdl-39032727

RESUMEN

This brief review article will describe treatment approaches for posttraumatic stress disorder (PTSD) based on findings from basic research. The focus of this review will be fear conditioning and extinction models, which provide a translational model of PTSD that can help translate basic research in nonhuman animals through well-controlled trials confirming the efficacy of treatment approaches in humans with PTSD such as prolonged exposure therapy. Specific cognitive aspects of fear extinction processes, including consolidation and reconsolidation, are reviewed along with behavioral and pharmacological treatment strategies based on basic research in these areas including attempts to prevent the development of PTSD as well as the treatment of chronic PTSD. Pharmacological, behavioral, and device-based augmentation strategies of PTSD treatment based in basic science findings are reviewed, including those that disrupt noradrenergic receptor processes, medications that act on NMDA receptors, physical exercise, cannabinoids, estradiol, dexamethasone, yohimbine, losartan, dopamine, and MDMA, along with the evidence for their efficacy in human clinical samples. While fear extinction provides an exciting translational opportunity to improve PTSD based on basic science findings, we review limitations and challenges of the extant literature as well as future directions.

4.
Personal Disord ; 15(2): 110-121, 2024 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-38095995

RESUMEN

Personality impairment is a core feature of personality disorders in both current (i.e., Diagnostic and Statistical Manual of Mental Disorders, fifth edition [DSM-5] personality disorders, International Classification of Diseases,11th revision personality disorders) and emerging (i.e., DSM-5's alternative model of personality disorders) models of psychopathology. Yet, despite its importance within clinical nosology, attempts to identify its optimal lower-order structure have yielded inconsistent findings. Given its presence in diagnostic models, it is important to better understand its empirical structure across a variety of instantiations. To the degree that impairment is multifaceted, various factors may have different nomological networks and varied implications for assessment, diagnosis, and treatment. Therefore, participants were recruited from two large public universities in the present preregistered study (N = 574) to explore the construct's structure with exploratory "bass-ackward" factor analyses at the item level. Participants completed over 250 items from six commonly used measures of personality dysfunction. Criterion variables in its nomological network were also collected (e.g., general and pathological personality traits, internalizing/externalizing behavior, and personality disorders) using both self- and informant-reports. These factor analyses identified four lower-order facets of impairment (i.e., negative self-regard, disagreeableness, intimacy problems, and lack of direction), all of which showed moderate to strong overlap with traits from both general and pathological models of personality. (PsycInfo Database Record (c) 2024 APA, all rights reserved).


Asunto(s)
Trastornos de la Personalidad , Personalidad , Humanos , Inventario de Personalidad , Escalas de Valoración Psiquiátrica , Trastornos de la Personalidad/diagnóstico , Manual Diagnóstico y Estadístico de los Trastornos Mentales
5.
J Pers ; 2023 Jul 19.
Artículo en Inglés | MEDLINE | ID: mdl-37469174

RESUMEN

OBJECTIVE: The present study examined the hierarchical structure of Conscientiousness across three large samples using item-level analyses. BACKGROUND: Conscientiousness is among the strongest predictors of individual differences in major life outcomes. Yet decades of work understanding the optimal lower-order structure of Conscientiousness has not rectified the differences that remain among existing models and measures. To precisely measure its relations to major life outcomes, it is necessary to work toward a comprehensive, replicable conceptualization of the construct's structure. METHODS: The present pre-registered study used three samples (Ns = 446, 406, & 424) to explore the domain's latent structure with item-level "bass-ackward" factor analyses and evaluate the resulting structure's interpretability, parsimony, and replicability. Participants completed self-report measures of Conscientiousness and criteria in its nomological network (e.g., FFM traits, externalizing behavior, disinhibitory traits; informant reports were collected as well). RESULTS: The factor analyses identified five interpretable and replicable factors (i.e., deliberation, order, industriousness, self-discipline, and dependability) using predominant measures of general personality. An additional factor (i.e., traditionalism) was introduced in the six-factor solution when the item pool was expanded to include less widely used measures of general personality. CONCLUSION: The authors discuss the item composition of each factor, their relation to existing models and measures of the domain's structure, their association with relevant criteria, and the general implications of conceptualizing Conscientiousness using flexible, item-level factor analysis.

6.
Hum Mutat ; 43(7): 950-962, 2022 07.
Artículo en Inglés | MEDLINE | ID: mdl-35419889

RESUMEN

To avoid acquired variants found in the blood, cultured skin fibroblasts are a recommended DNA source for germline genetic testing in patients with hematologic disorders, but data are lacking regarding practicality and limitations. We conducted a retrospective cohort study of 350 subjects with hematologic disorders who underwent skin fibroblast culture for germline genetic testing. We analyzed next-generation sequencing data from the targeted capture of 144 inherited cancer and bonemarrow failure genes to identify variants at heterozygous and subclonal variant allele frequencies. Sixteen (5%) biopsies failed to culture. Culture failure was more likely in samples with delays in culture initiation (OR = 4.3; p < 0.01) or a pathogenic variant in a telomere gene (OR = 42.6; p < 0.01). Median culture time was 28 days (IQR 22-29 days). Culture time was longer for subjects with prior allogeneic stem cell transplantation (+10.7%; p = 0.02) and shorter in subjects with a heterozygous pathogenic variant (-11.9%; p < 0.01), larger biopsy size (-10.6%; p < 0.01), or lymphoid malignancy (-8.4%; p < 0.01). Subclonal variants were identified in 10 (4%) and confirmed in five (56%) of eight with alternate samples available. Subclonal and discordant variants illustrate that germline testing from cultured skin fibroblasts requires phenotypic correlation and, in rare cases, follow-up studies for optimal interpretation.


Asunto(s)
Mutación de Línea Germinal , Enfermedades Hematológicas , Estudios de Factibilidad , Fibroblastos , Predisposición Genética a la Enfermedad , Pruebas Genéticas , Células Germinativas , Humanos , Estudios Retrospectivos
7.
JMIR Res Protoc ; 10(7): e25390, 2021 Jul 27.
Artículo en Inglés | MEDLINE | ID: mdl-34313603

RESUMEN

BACKGROUND: Tobacco smoking is associated with significant morbidity and premature mortality in individuals with serious mental illness. A 2-year pragmatic clinical trial (PCORI PCS-1504-30472) that enrolled 1100 individuals with serious mental illness in the greater Boston area was conducted to test 2 interventions for tobacco cessation for individuals with serious mental illness: (1) academic detailing, which delivers education to primary care providers and highlights first-line pharmacotherapy for smoking cessation, and (2) provision of community health worker support to smoker participants. Implementing and scaling this intervention in other settings will require the systematic identification of barriers and facilitators, as well as the identification of relevant subgroups, effective and unique components, and setting-specific factors. OBJECTIVE: This protocol outlines the proposed mixed methods evaluation of the pragmatic clinical trial to (1) identify barriers and facilitators to effective implementation of the interventions, (2) examine group differences among primary care physicians, and (3) identify barriers that stakeholders such as clinical, payor, and policy leaders would anticipate to impact the implementation of effective components of the intervention. METHODS: Qualitative interviews will be conducted with all study community health workers and selected smoker participants, primary care providers, and other stakeholders. Measures of performance and engagement will guide purposive sampling. The Consolidated Framework for Implementation Research will guide qualitative data collection and analysis in accordance with the following framework approach: (1) familiarization, (2) identifying a thematic framework, (3) indexing, (4) charting, and (5) mapping and interpretation. Joint display analyses will be constructed to analyze and draw conclusions across the quantitative and qualitative data. RESULTS: The 3-year cluster-randomized trial has concluded, and the analysis of primary outcomes is underway. Results from the pragmatic trial and this mixed methods implementation evaluation will be used to help disseminate, scale, and expand a systems intervention. CONCLUSIONS: The results of this mixed methods implementation evaluation will inform strategies for dissemination and solutions to potential barriers to the implementation of interventions from a smoking cessation trial for individuals with serious mental illness. INTERNATIONAL REGISTERED REPORT IDENTIFIER (IRRID): DERR1-10.2196/25390.

9.
Front Immunol ; 11: 1073, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32625203

RESUMEN

While B cells play a significant role in the onset of type-1 diabetes (T1D), little is know about their role in those early stages. Thus, to gain new insights into the role of B cells in T1D, we converted a physiological early pancreas-infiltrating B cell into a novel BCR mouse model using Somatic Cell Nuclear Transfer (SCNT). Strikingly, SCNT-derived B1411 model displayed neither developmental block nor anergy. Instead, B1411 underwent spontaneous germinal center reactions. Without T cell help, B1411-Rag1-/- was capable of forming peri-/intra-pancreatic lymph nodes, and undergoing class-switching. RNA-Seq analysis identified 93 differentially expressed genes in B1411 compared to WT B cells, including Irf7, Usp18, and Mda5 that had been linked to a potential viral etiology of T1D. We also found various members of the oligoadenylate synthase (OAS) family to be enriched in B1411, such as Oas1, which had recently also been linked to T1D. Strikingly, when challenged with glucose B1411-Rag1-/- mice displayed impaired glucose tolerance.


Asunto(s)
Autoinmunidad , Linfocitos B/inmunología , Estado Prediabético/etiología , Estado Prediabético/inmunología , Animales , Basidiomycota/genética , Basidiomycota/metabolismo , Señalización del Calcio/inmunología , Ensamble y Desensamble de Cromatina , Células Clonales/inmunología , Diabetes Mellitus Experimental/etiología , Diabetes Mellitus Experimental/genética , Diabetes Mellitus Experimental/inmunología , Femenino , Perfilación de la Expresión Génica , Prueba de Tolerancia a la Glucosa , Masculino , Ratones , Ratones Endogámicos C57BL , Ratones Endogámicos DBA , Ratones Endogámicos NOD , Ratones Noqueados , Modelos Inmunológicos , Técnicas de Transferencia Nuclear , Estado Prediabético/genética , Receptores de Antígenos de Linfocitos B/genética , Receptores de Antígenos de Linfocitos B/inmunología
11.
Sci Rep ; 5: 13662, 2015 Sep 10.
Artículo en Inglés | MEDLINE | ID: mdl-26354182

RESUMEN

Without competition, organisms would not evolve any meaningful physical or cognitive abilities. Competition can thus be understood as the driving force behind Darwinian evolution. But does this imply that more competitive environments necessarily evolve organisms with more sophisticated cognitive abilities than do less competitive environments? Or is there a tipping point at which competition does more harm than good? We examine the evolution of decision strategies among virtual agents performing a repetitive sampling task in three distinct environments. The environments differ in the degree to which the actions of a competitor can affect the fitness of the sampling agent, and in the variance of the sample. Under weak competition, agents evolve decision strategies that sample often and make accurate decisions, which not only improve their own fitness, but are good for the entire population. Under extreme competition, however, the dark side of the Janus face of Darwinian competition emerges: Agents are forced to sacrifice accuracy for speed and are prevented from sampling as often as higher variance in the environment would require. Modest competition is therefore a good driver for the evolution of cognitive abilities and of the population as a whole, whereas too much competition is devastating.


Asunto(s)
Evolución Biológica , Modelos Teóricos , Algoritmos , Humanos
12.
Cognition ; 133(1): 104-19, 2014 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-25010397

RESUMEN

In choices between uncertain options, information search can increase the chances of distinguishing good from bad options. However, many choices are made in the presence of other choosers who may seize the better option while one is still engaged in search. How long do (and should) people search before choosing between uncertain options in the presence of such competition? To address this question, we introduce a new experimental paradigm called the competitive sampling game. We use both simulation and empirical data to compare search and choice between competitive and solitary environments. Simulation results show that minimal search is adaptive when one expects competitors to choose quickly or is uncertain about how long competitors will search. Descriptively, we observe that competition drastically reduces information search prior to choice.


Asunto(s)
Conducta Competitiva/fisiología , Toma de Decisiones/fisiología , Conducta Exploratoria/fisiología , Incertidumbre , Simulación por Computador , Humanos , Conducta Social
13.
Psychol Sci ; 20(6): 671-5, 2009 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-19422631

RESUMEN

Proponents of unconscious-thought theory assert that letting the unconscious "mull it over" can enhance decisions. In a series of recent studies, researchers demonstrated that participants whose attention was focused on solving a complex problem (i.e., those using conscious thought) made poorer choices, decisions, and judgments than participants whose attention was distracted from the problem (i.e., those purportedly using unconscious thought). We argue that this finding, rather than establishing the existence of a deliberation-without-attention effect, is explained more compellingly in terms of the well-established distinction between on-line and memory-based judgments. In Experiment 1, we reversed the recent finding by simply changing participants' on-line processing goal from impression formation to memorization. Experiment 2 provided a replication and further established that some cognitive effort appears necessary to produce both the original pattern of results and its reversal, suggesting that such judgments are ultimately a product of conscious, rather than unconscious, thinking.


Asunto(s)
Atención , Concienciación , Reconocimiento Visual de Modelos , Solución de Problemas , Pensamiento , Inconsciente en Psicología , Toma de Decisiones , Humanos , Individualidad , Recuerdo Mental , Retención en Psicología , Aprendizaje Inverso
SELECCIÓN DE REFERENCIAS
DETALLE DE LA BÚSQUEDA