Modeling Skipped and Not‐Reached Items Using IRTrees

When dealing with missing responses, two types of omissions can be discerned: items can be skipped or not reached by the test taker. When the occurrence of these omissions is related to the proficiency process the missingness is nonignorable. The purpose of this article is to present a tree‐based IRT framework for modeling responses and omissions jointly, taking into account that test takers as well as items can contribute to the two types of omissions. The proposed framework covers several existing models for missing responses, and many IRTree models can be estimated using standard statistical software. Further, simulated data is used to show that ignoring missing responses is less robust than often considered. Finally, as an illustration of its applicability, the IRTree approach is applied to data from the 2009 PISA reading assessment.     

Adolescent smoking from a functional perspective: The Berlin-Bremen Study

Longitudinal data from the «Berlin-Bremen Study on Health Behavior» are used to investigate smoking transitions between different stages of smoking. 1357 seventh and eighth graders were asked about their smoking behavior, their expectations with regard to smoking, smoking in their environment, and their self-image in Fall, 1983. 86% and 81% participated again one and two years later, respectively. Analyses of carbon monoxide and serum thiocyanate levels revealed adequate validity for self-reported smoking behavior. Rates of smoking were dramatically different for different educational strata. Direct and indirect functions of smoking are distinguished. The «indirect» function refers to smoking as a means of obtaining access to peer groups, thus increasing one’s psychological well-being. Direct functions refer to social and affective effects of smoking such as looking older or calming down. In line with expectations, indirect functions were found to be more important for younger adolescents and for smoking onset. In contrast, direct functions were better predictors of the smoking behavior of older adolescents and of the transition to regular smoking.     

ICT learning experience and research orientation as predictors of ICT skills and the ICT use of university students

Since our first studies of information and communications technology (ICT) skills and ICT use at universities in 2004, ICT and its use by students has changed greatly. In order to obtain a more detailed picture of ICT skills, we first construct a new instrument to measure the self-perception of ICT skills (49 items) and of ICT use (53 items) by students. This allows us to find some patterns for ICT skills and ICT use. In order to explain these patterns, two basic hypotheses are formulated. The first suggests that positive ICT learning experiences at home, in school, and with peers could contribute to mastering a higher level of ICT skills and more frequent use of ICT among bachelor’s students, a hypothesis that aligns with Dewey’s learning theory. The second hypothesis suggests that there is a similarity between the characteristics of information systems and scientific research, and that students who identify more with scientific research would be more likely to have greater ICT skills and a higher frequency of ICT use. Both hypotheses are tested among bachelor’s students, using some important contextual variables (gender, domain of study, ICT course in secondary school or at university, and education level of parents). It can be concluded that there is a relationship between the ICT learning experience and the research-oriented identity commitment of bachelor’s students on the one hand, and their command of ICT skills and the frequency of use of computers, ICT instruments, and ICT programs on the other.     

The relationship between engagement in the scholarship of teaching and learning and students’ course experiences

While there has been a good deal of discussion about the scholarship of teaching and learning, and models have been developed to understand its scope, the effects on students’ learning of academics engaging in the scholarship of teaching and learning are unclear. In the context of initiatives to develop the scholarship of teaching and learning in a large research‐intensive university in Australia, this paper discusses the relationship between faculty performance on a set of scholarly accomplishments in relation to teaching and learning from 2002 to 2004, and changes in students’ course experiences from 2001 to 2005. The paper provides evidence of the relationship between the scholarship of teaching and learning and students’ course experiences and demonstrates the effectiveness of institutional strategies to encourage the scholarship of teaching and learning.     

动画剧本的故事性特征

在国内动画影片制作过程中,要做好剧本创作的故事性。首先,提出动画影片制作入要重视动画剧本创作的故事性,其次,强调动画剧本故事性必须植根于现实生活、反映现实生活才能使艺术效果深入观众之心;最后,以动画剧本故事情节的设置为重点,要求展现中国动画剧本故事性的个性特征。以此来倡导我国动画剧本创作要有“打磨”和“创新”精神,要有脚踏实地,循序渐进的创作理念。     

The effect of stimulating immigrant and national pupils’ helping behaviour during cooperative learning in classrooms on their maths‐related talk

This study examined whether stimulation of immigrant and national pupils’ use of high‐quality helping behaviour (experimental condition) during cooperative learning (CL) in classrooms boosts their maths‐related talk more than in an educational situation in which such stimulation is largely absent (control condition). A total of 59 elementary‐age pupils enrolled in a CL maths curriculum of 11 lessons. They were video taped during two lessons while working together on maths assignments to assess their maths‐related talk. We found that the quality of maths‐related talk was higher in the experimental condition. Furthermore, immigrant pupils’ used less maths‐related talk than the national pupils. Implications are discussed.     

‘Trying to find the extra choices’: migrant parents and secondary school choice in Greater Manchester

This article, based on qualitative research in Greater Manchester, examines the experience of migrants in navigating the education system, and in particular in choosing secondary schools for their children. There has been extensive research on the process of choosing schools since the policy reforms of the 1980s, but none has examined how the process of choosing a secondary school is impacted by the material and affective impact of migration. The article argues that migrants’ experience is embedded in gendered, classed and racialised processes and that, despite the heterogeneity of the category, migrants often face particular barriers in negotiating the school system. Nonetheless it also explores the importance put on education by the migrants who were interviewed and the active labour they engage in to try and achieve the best results for their children.     

加拿大原住民与非原住民的收入差异

从加拿大2001年的人口普查中抽取3％的样本数据,分析了原住民和非原住加拿大人之间工资和薪金的差异,发现注册印第安人、梅蒂斯人与非原住民的年收入和周薪在跨组和组内都有显著差异。这种差异在很大程度上是由于人口、人力资本、职业以及这三种人口的区域差异。     

Individual differences in spatial text processing: High spatial ability can compensate for spatial working memory interference

The present study investigates the relation between spatial ability and visuo-spatial and verbal working memory in spatial text processing. In two experiments, participants listened to a spatial text (Experiments 1 and 2) and a non-spatial text (Experiment 1), at the same time performing a spatial or a verbal concurrent task, or no secondary task. To understand how individuals who differ in spatial ability process spatial text during dual task performance, spatial individual differences were analyzed. The tasks administered were the Vandenberg and Kuse [Vandenberg, S. G., & Kuse, A. R. (1978). Mental rotation, a group test of three-dimensional spatial visualization. Perceptual and Motor Skills, 47, 599-604.] mental rotation test (MRT) and a reading comprehension task (RCT). Individuals with high (HMR) and low (LMR) mental rotation differed in MRT scores but had similar RCT performance. Results showed that the HMR group, in contrast with LMR counterparts, preserved good spatial text recall even when a spatial concurrent task was performed; however, Experiment 2 revealed a modification of spatial concurrent task performance in LMR as well in HMR group. Overall, results suggest that HMR individuals have more spatial resources than LMR individuals, allowing them to compensate for spatial working memory interference, but only to a limited extent, given that the processing of spatial information is still mediated by VSWM.