内隐学习的人工神经网络模型

近年来,人工神经网络模型常被用来模拟各种心理活动,从而为心理学的一些相关理论提供丰富的证据,内隐学习也不例外。基于权重调整来学习正确反应的人工神经网络模型和内隐学习的两大本质特征间有着极为相应的匹配,因此,人工神经网络模型特别适用于内隐学习研究。到目前为止,针对两种较为普遍的内隐学习任务,已经相应地出现了两种使用较为广泛的神经网络模型——自动联系者和简单循环网络     

Metacognitive therapy in recurrent depression: A case replication series in Denmark

Metacognitive therapy (MCT) for depression is derived from the Wells and Matthews (1994) self‐regulatory model, in which a Cognitive‐Attentional Syndrome (CAS) is the cause of psychological disorders. MCT for depression focuses on identifying patients' CAS and helps them to stop it. The CAS consists of worry, rumination and dysfunctional coping strategies. The focus in MCT is on removing the CAS by challenging positive and negative metacognitive beliefs and eliminating dysfunctional behaviors. In this case series, MCT was delivered to four depressed Danes and treatment was evaluated in 5–11 sessions of up to one hour each. An A‐B design with follow‐up at 3 and 6 months was conducted and the primary outcome was Beck's Depression Inventory II (BDI‐II). We measured CAS processes with the Major depressive Disorder Scale (MDD‐S). The results of the case series showed clinically significant improvements in depressive symptoms, rumination and metacognitive beliefs and the effects were still present at follow‐up for all patients. The small number of patients and decreasing baselines observed in some cases limits the conclusions. However, the results suggest that this treatment is feasible and was associated with large improvements in symptoms when delivered away from its point of origin and in a Danish help‐seeking sample.     

A feasibility study of psychological strengths and well-being assessment in individuals living with recurrent depression

Current conceptualizations of mental illness focus on assessing psychopathology. A balanced approach would assess strengths that individuals bring to coping with illness. This study measures psychological strengths in individuals with recurrent depression, their coping strategies, and their perceptions of the usefulness of strengths assessment as a component of psychological assessment. Individuals (N?=?112) with recurrent depression completed an online questionnaire measuring several psychological strengths, including gratitude, forgiveness, spirituality, and hope. Participants also described their use of coping strategies and their reaction to the utility of the two-continua model of mental health. A subset (n?=?10) completed a follow-up telephone interview. Higher levels of gratitude, self-forgiveness, hope, and spirituality and lower levels of optimism were indicative of higher life satisfaction. Self-forgiveness, spirituality, and gratitude were predictors of happiness. Higher levels of hope and self-forgiveness predicted positive affect whereas lower levels of self-forgiveness predicted negative affect. Participants reported using a range of coping resources and indicated that they valued strengths assessment, perceiving the two-continua model of mental health as empowering. The researcher discusses implications for clinical practice.     

Large-Scale Modeling of Wordform Learning and Representation

The forms of words as they appear in text and speech are central to theories and models of lexical processing. Nonetheless, current methods for simulating their learning and representation fail to approach the scale and heterogeneity of real wordform lexicons. A connectionist architecture termed the sequence encoder is used to learn nearly 75,000 wordform representations through exposure to strings of stress-marked phonemes or letters. First, the mechanisms and efficacy of the sequence encoder are demonstrated and shown to overcome problems with traditional slot-based codes. Then, two large-scale simulations are reported that learned to represent lexicons of either phonological or orthographic wordforms. In doing so, the models learned the statistics of their lexicons as shown by better processing of well-formed pseudowords as opposed to ill-formed (scrambled) pseudowords, and by accounting for variance in well-formedness ratings. It is discussed how the sequence encoder may be integrated into broader models of lexical processing.     

Coping and Emotional Distress in Primary and Recurrent Breast Cancer Patients

The purpose of this study was to explore the emotional distress and coping strategies among women with primary as against recurrent (local or metastatic) breast cancer. The study sample consisted of 80 women, all 1 year postdiagnosis of primary or recurrent breast cancer. All women completed a demographic questionnaire, the Emotional Symptoms Checklist (SCL-90R) and the Ways of Coping Questionnaire (WCQ). Patients with recurrence reported higher levels of depression and anxiety as well as a higher global severity index (GSI). This group used significantly fewer problem-solving and positive-focus strategies. Emotion-focused coping predicted depression and the GSI, but only positive attitude predicted the level of anxiety. The state of disease was a major predictor of emotional symptoms, and to a lesser extent of the coping strategies used. Although emotion-focused coping had a deleterious effect on emotional well-being, our study highlighted the importance and relevance of positive attitude for reducing emotional distress in general and level of anxiety in particular. Promotion of positive-focus coping strategies should thus be a key element in psychological interventions with cancer patients.     

Genetic Evaluation and Counseling of Couples with Recurrent Miscarriage: Recommendations of the National Society of Genetic Counselors

The objective of this document is to provide recommendations for genetic evaluation and counseling of couples with recurrent miscarriage (RM). The recommendations are the opinions of the multidisciplinary Inherited Pregnancy Loss Working Group (IPLWG), with expertise in genetic counseling, medical genetics, maternal fetal medicine, internal medicine, infectious disease, cytogenetics, and coagulation disorders. The IPLWG defines RM as three or more clinically recognized consecutive or non-consecutive pregnancy losses occurring prior to fetal viability (<24 weeks gestation). These recommendations are provided to assist genetic counselors and other health care providers in clinical decision-making, as well as to promote consistency of patient care, guide the allocation of medical resources, and increase awareness of the psychosocial and cultural issues experienced by couples with RM. The IPLWG was convened with support from the March of Dimes Western Washington State Chapter and the University of Washington Division of Medical Genetics. The recommendations are U.S. Preventive Task Force Class III, and are based on clinical experiences, review of pertinent English-language published articles, and reports of expert committees. This document reviews the suspected causes of RM, provides indications for genetic evaluation and testing, addresses psychosocial and cultural considerations, and provides professional and patient resources. These recommendations should not be construed as dictating an exclusive course of medical management, nor does the use of such recommendations guarantee a particular outcome. The professional judgment of a health care provider, familiar with the circumstances of a specific case, should always supersede these recommendations.     

早期复发性流产的系统论思考

早期复发性流产是妊娠期妇女较常见的疾病。根据系统论方法主要基本原则,分析其在早期复发性流产诊断治疗中的指导性作用。揭示在医学科学研究中自觉、主动地运用辩证思维方法和系统论科学方法,可以拓展我们的研究思路,为疾病的诊断治疗提供最佳方案。