计算机动态测验中问题解决过程策略的分析：多水平混合IRT模型的拓展与应用

学生在完成计算机动态测验过程中, 会产生大量带有时间标记的过程性数据。本研究基于5个国家(地区) 3196名学生在PISA2012一道交通问题解决任务上的139990条数据, 将多水平混合IRT (MMixIRT)模型进行拓展, 用于探索问题解决过程策略的类别特点。结果表明, 该模型不仅可以基于行为序列对不同国家(地区)学生在解决问题时策略使用情况的典型特征进行分析, 还可以提供个体水平的能力估计值。拓展的MMixIRT模型可用于分析过程性数据的特征。     

Dynamic estimation in the extended marginal Rasch model with an application to mathematical computer-adaptive practice

We introduce a general response model that allows for several simple restrictions, resulting in other models such as the extended Rasch model. For the extended Rasch model, a dynamic Bayesian estimation procedure is provided, which is able to deal with data sets that change over time, and possibly include many missing values. To ensure comparability over time, a data augmentation method is used, which provides an augmented person-by-item data matrix and reproduces the sufficient statistics of the complete data matrix. Hence, longitudinal comparisons can be easily made based on simple summaries, such as proportion correct, sum score, etc. As an illustration of the method, an example is provided using data from a computer-adaptive practice mathematical environment.     

Epistemic presentism

Commonsense functionalism is taken to entail a version of the extended mind thesis, according to which one’s dispositional beliefs may be partly constituted by artifacts. As several opponents of the extended mind thesis have objected, claiming so can generate a cognitive/knowledge bloat, according to which we may count as knowing the contents of trusted websites, even before looking them up (!). One way to retain commonsense functionalism, but avoid the ensuing “cognitive/knowledge bloat” worry is to introduce epistemic presentism—the view that there are no dispositional beliefs and that we can only believe, and thereby know, things in the present. Independently of the above problem, epistemic presentism can be further motivated by shedding light on two central epistemological questions: (1) how to understand the distinction between doxastic and propositional justification and (2) how to interpret the closure principle. The view also aligns with strong intuitions about what we may take ourselves to know, what the relation between action and belief is, and what may count as part of our minds.     

Distributed learning: Educating and assessing extended cognitive systems

Extended and distributed cognition theories argue that human cognitive systems sometimes include non-biological objects. On these views, the physical supervenience base of cognitive systems is thus not the biological brain or even the embodied organism, but an organism-plus-artifacts. In this paper, we provide a novel account of the implications of these views for learning, education, and assessment. We start by conceptualizing how we learn to assemble extended cognitive systems by internalizing cultural norms and practices. Having a better grip on how extended cognitive systems are assembled, we focus on the question: If our cognition extends, how should we educate and assess such extended cognitive systems? We suggest various ways to minimize possible negative effects of extending one’s cognition and to efficiently find and organize (online) information by adopting a virtue epistemology approach. Educational and assessment implications are foregrounded, particularly in the case of Danish students’ use of the internet during exams.     

A School-Based,Primary Violence Prevention Program

Summary

This article presents findings from an evaluative study of a multidisciplinary violence prevention project jointly administered by a family practice clinic and junior high school in Santa Fe, New Mexico. The project team hypothesized that an intervention established on a public health model and aimed at enhancing adolescent self-esteem through cognitive and behavioral strategies would reduce the tendency to engage in violence of participating students. The project united health care personnel, social workers and legal profession-als in an effort to teach students specific cognitive tools for the reduction and avoidance of violent encounters. The experimental results do not reveal Project effectiveness in boosting self-esteem indicators among students, although the Project docs seem to have contributed to the control of students' behavioral aggression. Although a clear relationship between self-esteem and violent behavior is not demonstrated by the experimental results, the project study suggests that school-based, anti-violence programs based on a public health model can have a positive effect in the reduction of physical and verbal aggression among adolescents.     

Severity effect on compensation and imprisonment recommendations: Deterrence as a mediator in Singapore

Severe, compared to mild, harm results in harsher punishment. According to the model of people as intuitive prosecutors, the severity effect is a deterrence message. The authors tested this hypothesis in two studies in Singapore. In Study 1, participants learnt about the severity of harm arising from an accidental or intentional act, and expressed anger, made attributions, assigned blame, recommended compensation by and imprisonment of the offender, and indicated the degree to which they were guided by the punishment goals of deterrence and retribution. As hypothesized, the prosecutorial mindset was multidimensional, and the deterrence goal mediated the severity effect on punishment. In Study 2, the severity effect held when the punishment goal was unspecified but not when it was experimentally specified as deterrence.     

Folk psychology’ is not folk psychology

This paper disputes the claim that our understanding of others is enabled by a commonsense or ‘folk’ psychology, whose ‘core’ involves the attribution of intentional states in order to predict and explain behaviour. I argue that interpersonal understanding is seldom, if ever, a matter of two people assigning intentional states to each other but emerges out of a context of interaction between them. Self and other form a coupled system rather than two wholly separate entities equipped with an internalised capacity to assign mental states to the other. This applies even in those instances where one might seem to adopt a ‘detached’ perspective towards others. Thus ‘folk psychology’, as commonly construed, is not folk psychology.     

Equipercentile equating via data-imputation techniques

In the design of common-item equating, two groups of examinees are administered separate test forms, and each test form contains a common subset of items. We consider test equating under this situation as an incomplete data problem—that is, examinees have observed scores on one test form and missing scores on the other. Through the use of statistical data-imputation techniques, the missing scores can be replaced by reasonable estimates, and consequently the forms may be directly equated as if both forms were administered to both groups. In this paper we discuss different data-imputation techniques that are useful for equipercentile equating; we also use empirical data to evaluate the accuracy of these techniques as compared with chained equipercentile equating.A paper presented at the European Meeting of the Psychometric Society, Barcelona, Spain, July, 1993.     

Self-enhancement in Japan and America

North Americans view themselves in more positive terms than they view most other people. In the present paper, we report three studies showing that this bias is also found in Japan. For highly valued traits and abilities, Japanese students rated themselves and their best friends in more positive terms than they rated most other students (Study 1 and Study 2) and most other Japanese (Study 2). In Study 3, a sample of older Japanese displayed the same tendency when evaluating themselves and a member of their family. We discuss the theoretical importance of the findings.