Dynamic Bayesian Network Modeling of Game-Based Diagnostic Assessments

Abstract

Digital games offer an appealing environment for assessing student proficiencies, including skills and misconceptions in a diagnostic setting. This paper proposes a dynamic Bayesian network modeling approach for observations of student performance from an educational video game. Drawing from and advancing methods in dynamic Bayesian networks, cognitive diagnostic modeling, and analysis of process data, a Bayesian approach to model construction, calibration, and use in facilitating inferences about students on the fly is described, and implemented in the context of an educational video game.     

Working with suicidal clients: The person‐centred counsellor's experience and understanding of risk assessment

Background: Client risk assessment within the person‐centred paradigm is traditionally seen as squarely opposed to its ethos. Aim: To determine how the person‐centred counsellor experiences and understands the issue of risk assessment within the confines of their work ethos. Method: Semi‐structured interviews with seven person‐centred counsellors using thematic analysis were conducted. Findings: Three main themes emerged following thematic analysis: The impact of the risk assessment process on self; The counsellor's experience of self, and The therapeutic process in relation to risk assessment. Discussion: The findings suggest that person‐centred counsellors conduct risk assessments taking a holistic approach involving not only individual risk predictors and characteristics of the client but also individual factors related to self.     

Developmental Changes in Visual and Auditory Inhibition in Early Childhood

The development of executive functions in the preschool years is not fully understood. Although there exists a large body of research investigating the maturation of executive functioning in school‐aged children, little is known about the emergence of such skills, in particular inhibition, among preschool‐aged children. Understanding developmental changes of inhibition proficiencies and deficiencies early in childhood is important for charting typical and atypical developmental trajectories. Using an adapted computerized paradigm, the present study examined age‐related changes in visual and auditory inhibition in 68 typically developing children aged 3 to 6 years. The results indicated that although similar age‐related gains in performance occurred across both visual and auditory inhibition tasks, certain modality‐specific differences emerged in terms of accuracy and reaction time. These results suggest that the newly adapted measures used are sensitive enough to capture developmental variations in inhibition. Copyright © 2012 John Wiley & Sons, Ltd.     

领导力技能问卷的修订

以湖北省396名中学生为被试,在探索性因素分析的基础上对Carter等人1980年编制的领导力技能问卷进行了初步的修订。结果表明：修订后的领导力技能问卷具有良好的内部一致性和稳定性,且验证性因素分析也表明各分量表的结构拟合良好,达到了心理测量学标准。可作为评估中国青少年领导力技能的有效且可靠的工具进行使用。     

Dimensional and Cross‐Cutting Assessment in the DSM‐5

A significant proposed change to the 5th edition of the Diagnostic and Statistical Manual of Mental Disorders (DSM‐5) that will significantly affect the way counselors diagnose mental disorders is the addition of dimensional assessments to the categorical diagnoses. The author reviews the current DSM's (4th ed., text rev.; American Psychiatric Association, 2000 ) categorical classification system, describes the proposed dimensional and cross‐cutting assessments, and provides implications about clinical utility and user acceptability of a dimensional diagnostic approach.     

Choosing Assessment Instruments for Depression Outcome Research With School‐Age Youth

Using effect size results from Erford et al.'s (2011) meta‐analysis for treatment of depression in school‐age youth, the authors analyzed 6 commonly used instruments for practical and technical strengths and weaknesses. Effect size estimates from these 6 instruments were compared to indicate likely results when used in future depression outcome research.     

Remarkable properties for diagnostics and inference of ranking data modelling

The Plackett-Luce model (PL) for ranked data assumes the forward order of the ranking process. This hypothesis postulates that the ranking process of the items is carried out by sequentially assigning the positions from the top (most liked) to the bottom (least liked) alternative. This assumption has been recently relaxed with the Extended Plackett-Luce model (EPL) through the introduction of the discrete reference order parameter, describing the rank attribution path. By starting from two formal properties of the EPL, the former related to the inverse ordering of the item probabilities at the first and last stage of the ranking process and the latter well-known as independence of irrelevant alternatives (or Luce's choice axiom), we derive novel diagnostic tools for testing the appropriateness of the EPL assumption as the actual sampling distribution of the observed rankings. These diagnostic tools can help uncovering possible idiosyncratic paths in the sequential choice process. Besides contributing to fill the gap of goodness-of-fit methods for the family of multistage models, we also show how one of the two statistics can be conveniently exploited to construct a heuristic method, that surrogates the maximum likelihood approach for inferring the underlying reference order parameter. The relative performance of the proposals, compared with more conventional approaches, is illustrated by means of extensive simulation studies.     

Old,but gold? A dual-pathway model of age bias in personnel selection decisions

We present a dual-pathway model that differentiates two underlying mechanisms by which age affects selection decisions. In two experimental studies, one with lay persons (n = 316) and one with experienced Human Resource professionals (n = 103), we demonstrate that the relationship between older age and hireability is negatively mediated by perceived appearance, indicating that older candidates receive less favorable ratings because they are perceived as being less physically appealing. Moreover, we demonstrate that the relationship between older age and hireability is positively mediated by perceived experience, indicating that older candidates receive more favorable ratings because they are perceived as being more experienced. Importantly, these two pathways neutralize each other, yielding a null effect when their effects are neglected.     

Interpretational Biases in Emotional Psychopathology

Many psychological disorders are characterized by interpretational processing biases, and Aaron T. Beck's work provided a crucial theoretical foundation for assessing, treating, and researching them. The present commentary aims to sketch a brief historical overview of how this work evolved and developed, and how it has been translated into concrete assessment techniques for use in treatment and led to innovative research lines in clinical research.     

Working memory,sustained attention,and physical activity: An intraindividual study

ObjectiveExperimental studies show small to moderate effects of both acute and regular physical activity on executive functions, these being strongly associated with academic performance at school. In order to understand the naturally occurring associations between primary school-aged children’s working memory, self-reported sustained attention, and physical activity, 35 children (M_age = 9.8 years, range = 7.6–11.4 years old) in Years 3–6 of primary school took part in a two-week long intraindividual study.MethodsParticipants wore an accelerometer wristband throughout the study, and carried out a working memory task (digit recall) and completed a sustained attention measure each morning and afternoon, giving 517 time-points nested in 4–10 school-days (M_obs = 15.8 situations, n_obs = 4–18).ResultsUsing multilevel structural equation models (MSEM), we found that working memory was stable across time (within-person b = 0.29) and trait-like (ICCs = 0.58). Across situations, state-working memory was higher later in the calendar week. Acute moderate to vigorous physical activity (MVPA) was not associated with state-working memory, but exertion of a higher level of MVPA than usual the previous day was associated with lower state-working memory the following day. Trait-sustained attention (across the two weeks) predicted higher trait-working memory and older students outperformed younger students.ConclusionsImplications for timing and intensity of students’ physical activity in educational settings is discussed.