认知诊断计算机化自适应测验的选题策略

随着认知诊断计算机化自适应测验(cognitive diagnostic computerized adaptive testing, CD-CAT)理论与实践的发展, 兼顾知识状态与能力的双目标CD-CAT逐渐受到重视。选题策略是CAT的核心, 通过梳理传统CD-CAT和双目标CD-CAT选题策略的研究, 并对它们的特点、关系及表现进行介绍和评析。最后, 基于认知诊断模型与CAT实践发展指出未来应加强一般化认知模型、复杂测验条件认知诊断模型下选题策略的研究; 应开发双目标诊断测验的项目和测验特征指标; 还应加强非参数选题方法和CD-CAT的实践应用研究。     

Psychology's limits as a scientific discipline: A personal view

I provided a more personal view of Wachtel's (1980) article. I began by discussing the extent to which my own research program complied with his distinctive recommendations. After offering a different take on the impact of high productivity, I focused on (a) the negative effects of the quest for extramural funding and (b) the positive effects of a better balance between theoretical and empirical contributions. I then turn to some of my own theoretical and empirical studies of the place that theory has in successful science. This research suggests that theory only has a beneficial effect when it is integrative in function and when it is closely constrained by available data. I end with a speculation regarding the value of having theories that are maximally formal, even mathematical.     

Cross-linguistic phonotactic competition and cognitive control in bilinguals

The current study examines the relation between cognitive control and linguistic competition resolution at the sublexical level in bilinguals. Twenty-one Spanish–English bilinguals and 23 English monolinguals completed a non-linguistic Stroop task (indexing inhibitory control) and a linguistic priming/lexical decision task (indexing Spanish phonotactic-constraint competition during English comprehension). More efficient Stroop performance (i.e. a smaller Stroop effect) in bilinguals was associated with decreased competition from Spanish phonotactic constraints during English comprehension. This relation was observed when nonword targets overlapped in phonotactic constraints and phonological form with preceding cognate primes (e.g. prime: stable (Spanish: estable)/target: esteriors). Findings suggest a link between non-linguistic cognitive control and co-activation of linguistic structures at the sublexical level in bilinguals.     

肢体形状和肢体动作表征的早期发展

肢体是社会性信息的重要载体。研究肢体表征的早期发展对于揭示其肢体表征加工的内在机制, 进一步理解婴儿的社会性发展具有重要意义。从肢体形状和肢体动作两个方面来看, 已有研究主要考察了婴儿在处理肢体结构信息和运动信息时的表征方式, 并提出了婴儿肢体表征发展机制的两种理论。未来应进一步明确婴儿肢体表征的具体发展过程及关键期, 并通过脑成像技术探究生物运动偏好对于肢体表征的作用机制。     

Does experienced pain affects local brain volumes? Insights from a clinical acute pain model

Background/Objective:To study pain-brain morphometry associations as a function of post-surgery stages (anesthesia, pain and analgesia) in an acute pain model. Method:Impacted mandible third molar were extracted. Before surgery, an anatomical T1 scan was obtained. Regional brain volumen and subcortical nuclei shapes were obtained. Statistical analyses were done using multiple regression, being pain scores the predictors and voxel volumes, subcortical nuclei volumes and subcortical nuclei shapes, the outcomes. Results:Pain was significantly larger at pain than at anesthesia and analgesia stages, and was higher during anesthesia than during analgesia. Pain intensity was related to grey matter in several cortical (Insula, Mid Frontal and Temporal Gyruses, Precuneus, Anterior Cingulate), and subcortical nuclei (Hippocampus, Thalamus, Putamen, Amygdala), depending of the post-surgical stage. A larger number of brain areas showed significance at pain that at anesthesia and analgesia stages. Conclusions:The relationships of regional brain volumes and subcortical nuclei shapes with pain scores seemed to be unsteady, as they changed with the patient's actual pain stage.     

消费者自我构念、独特性需求与品牌标识形状偏好

市场上品牌标识形状各具形态,它们已成为吸引消费者眼球的重要品牌要素,如何设计出科学实效的品牌标识形状已成为营销策略中基础而又关键的内容。什么形状的品牌标识更能获得目标群体的偏爱?本文从自我构念的水平视角出发,推论认为不同自我构念的个体在"独特性需求"上具有显著差异,由此形成对多角和圆润的品牌标识形状的偏好差异,独特性需求在自我构念与品牌标识形状偏好之间起中介作用。文章通过4个实验,一致证实独立型自我构念的消费者独特性需求更高,偏爱多角的品牌标识;相依型自我构念的消费者,独特性需求更低,偏爱圆润的品牌标识。但上述效应只存在于公开产品购买情境,当消费者购买和使用私人产品时,无论个体的自我构念是独立型还是相依型,他们对品牌标识多角与圆润的偏好没有显著差异。本文推进了自我构念、独特性需求、品牌标识形状等领域的理论研究,为企业在设计、调整品牌标识形状及制定配套营销策略方面提供了丰富的战略启示。     

After-effects induced by interactions between hydrogen and the martensite transformation in Ni–Ti superelastic alloy

The effects of dynamic interactions between hydrogen and a stress-induced martensite transformation on the recovery of deteriorated tensile properties by ageing in air at room temperature have been investigated for a Ni–Ti superelastic alloy. A specimen is subjected to single stress-induced martensite and reverse transformations immediately after hydrogen charging. Upon tensile testing, brittle fracture occurs in the latter half of the elastic deformation region of the martensite phase after the stress-induced martensite transformation. Upon ageing before the tensile test, fracture occurs during the stress-induced martensite transformation. In addition, the nano- and micro-morphologies of the brittle outer part of the fracture surface of the specimen are changed by ageing. Thus, the tensile properties markedly deteriorate, rather than recover, by ageing. The present results clearly indicate that dynamic interactions between hydrogen and the stress-induced martensite transformation have serious after-effects on hydrogen embrittlement of Ni–Ti superelastic alloy.     

Obligatory and optional personal life investments in old and very old age: Validation and functional relations

Personal life investment (PLI) measures motivational energy invested in central life domains. We distinguished between obligatory PLIs, that is, required investments, and optional PLIs, that is, investments that are possible but not necessary. Data from the Berlin Aging Study (N = 516; 70–103 years) were employed to investigate the validity of this distinction. We further explored how both PLI types relate to aging satisfaction and whether associations with validation variables and satisfaction differed depending on resource limitations (poor health). As expected based on conceptual affinities between the distinctions of obligatory-optional PLI and approach-avoidance tendencies, both PLI types showed positive relations with extraversion (a correlate of approach), but only obligatory PLI was positively related to neuroticism (a correlate of avoidance). Optional PLI (not obligatory PLI) was related to higher aging satisfaction, but only in fairly healthy people. This underscores differential functional relations of optional PLI depending on resource availability.

Atypical shape bias and categorization in autism: Evidence from children and computational simulations

The shape bias, a preference for mapping new word labels onto the shape rather than the color or texture of referents, has been postulated as a word‐learning mechanism. Previous research has shown deficits in the shape bias in children with autism even though they acquire sizeable lexicons. While previous explanations have suggested the atypical use of color for label extension in individuals with autism, we hypothesize an atypical mapping of novel labels to novel objects, regardless of the physical properties of the objects. In Experiment 1, we demonstrate this phenomenon in some individuals with autism, but the novelty of objects only partially explains their lack of shape bias. In a second experiment, we present a computational model that provides a developmental account of the shape bias in typically developing children and in those with autism. This model is based on theories of neurological dysfunctions in autism, and it integrates theoretical and empirical findings in the literature of categorization, word learning, and the shape bias. The model replicates the pattern of results of our first experiment and shows how individuals with autism are more likely to categorize experimental objects together on the basis of their novelty. It also provides insights into possible mechanisms by which children with autism learn new words, and why their word referents may be idiosyncratic. Our model highlights a developmental approach to autism that emphasizes deficient representations of categories underlying an impaired shape bias.     

L’analyse des risques psychosociaux en ESAT parmi des travailleurs en situation de handicap (TSH) : éléments de réflexion

Unlike the mainstream world of labour, studies on psychosocial risks (PSR) in Establishments and Work Assistance Services (ESAT) among workers with disabilities are scarce. Given the adverse effects of the PSR on both these workers and on the work itself, it seems essential to focus specifically on the PSR in the context of ESAT. The paper shows that the application of different theoretical models of PSR from the mainstream environment to the ESAT is possible. The health at work for people with disabilities requires taking into account the disorders influencing the identification and the mobilization of resources and skills. Working conditions in ESAT allow health promotion if they are adapted to the specificities and needs of people with disabilities.