Designing a computer support system for multimedia curriculum development in Shanghai     

Qiyun Wang  Nienke Nieveen  Jan van den Akker 《Educational technology research and development : ETR & D》2007,55(3):275-295

The CASCADE-MUCH system was designed to help teacher-designers in Shanghai, China with the development of instructional scenarios for multimedia curricula. After four rounds of prototyping, a summative evaluation was carried out to assess practicality. Results showed that the system was practical for the intended target users in Shanghai and also had potential for users in other contexts. The purpose of this article is to present the design process of the CASCADE-MUCH program and discuss how the evolutionary prototyping approach improved program quality and contributed to the designer’s knowledge growth.  相似文献   

Genetic and Environmental Influences on Vocabulary IQ: Parental Education Level as Moderator   总被引：12，自引：0，他引：12  

David C. Rowe  Kristen C. Jacobson  & Edwin J. C. G. Van den Oord 《Child development》1999,70(5):1151-1162

This article examines how parental education level moderates the genetic and environmental contributions to variation in verbal IQ. Data are from 1909 non-Hispanic Whites and African American sibling pairs from the National Longitudinal Study of Adolescent Health, which obtained nationally-based samples of identical (MZ) twins, fraternal (DZ) twins, full and half siblings, cousins (in the same household), and biologically unrelated siblings. In the whole sample, the variance estimate for heritability (h2 = .57, SE = .08) was greater than that for shared environment (c2 = .13, SE = .04). Both heritability and the shared environmental estimate were moderated, however, by level of parental education. Specifically, among more highly educated families, the average h2 = .74 (SE = .10) and the average c2 = .00 (SE = .05). Conversely, among less well-educated families, heritability decreased and shared environmental influences increased, yielding similar proportions of variance explained by genetic and environmental factors, average h2 = .26 (SE = .15), and average c2 = .23 (SE = .07).  相似文献   

Exploring the potential of a computer tool for instructional developers     

Nienke Nieveen  Jan van den Akker 《Educational technology research and development : ETR & D》1999,47(3):77-98

Information and communication technology tools currently permeate almost every professional domain. Those geared toward the field of instructional development have emerged in recent years. This article explores the potential for linking the domains of computer support and instructional development.This article reports on the design and evaluation of CASCADE (Computer Assisted Curriculum Analysis, Design and Evaluation), a computer system that supports instructional developers during formative evaluation efforts. Five prototypes of CASCADE were created and evaluated on the basis of their validity (reflection of state-of-the-art knowledge and internal consistency); practicality (ability to meet the needs, wishes and contextual constraints of the target group); and effectiveness (improved user task performance).The results of this study suggest that the use of CASCADE could: (a) improve the consistency of formative evaluation plans and activities; (b) motivate developers by elevating their confidence in using formative evaluation activities; (c) save time; and (d) help to provide justifications for decisions made.  相似文献   

Editorial     

Jeroen van den Hoven  Lucas D. Introna  Deborah G. Johnson  Helen Nissenbaum 《Ethics and Information Technology》1999,1(1):1-3

  相似文献   

The Validity of Comparative Educational Studies   总被引：1，自引：0，他引：1  

Timo M. Bechger  Godfried van den  Wittenboer Joop J. Hox  C. De  Glopper 《Educational Measurement》1999,18(3):18-26

What are the conditions that will allow for appropriate comparisons among groups" Should the concept of comparative validity be added to the lexicon of the psychometrician"  相似文献   

Evaluating municipal websites: A methodological comparison of three think-aloud variants     

Maaike J. van den Haak  Menno D.T. de JongPeter Jan SchellensAuthor Vitae 《Government Information Quarterly》2009

Usability methods have received relatively little methodological attention within the field of E-Government. This paper aims to address this gap by reporting on a usability test of the municipal website of Deventer (the Netherlands), carried out by means of three variants of the think-aloud method (concurrent/retrospective think-aloud protocols and constructive interaction). These three methods had proved successful in a previous evaluation of a different municipal website, yet we decided to replicate our study in order to investigate whether the three methods would reveal different results when applied to another municipal website with a different information architecture. The results of our study showed that, as in the previous municipal website evaluation, the three evaluation methods were largely comparable in terms of output. Nevertheless, we did find a number of differences between the present and previous municipal website evaluation regarding the workings of the three methods—differences that could be explained by the different information architectures of the municipal websites tested. This suggests that the three evaluation methods might indeed work differently depending on the nature of the website that is being evaluated, and calls for more research into the effect of task type on the validity of evaluation methods.  相似文献   

Grasping the dynamic complexity of team learning: An integrative model for effective team learning in organisations     

Stefan Decuyper  Filip Dochy  Piet Van den Bossche 《Educational Research Review》2010,5(2):111-133

In this article we present an integrative model of team learning. Literature shows that effective team learning requires the establishment of a dialogical space amongst team members, in which communicative behaviours such as ‘sharing’, ‘co-construction’ and ‘constructive conflict’ are balanced. However, finding this balance is not enough. Important questions such as ‘communicating about what?’, ‘communicating with whom?’ and ‘communicating for what?’ remain crucial. Five other process variables ‘team reflexivity’, ‘team activity’, ‘boundary crossing’, ‘storage’ and ‘retrieval’ are identified. Besides the core process variables, our model organises the most important inputs, catalyst emergent states and outputs of team learning.  相似文献   

MenCare+ in South Africa: findings from a gender transformative young men’s group education on sexual and reproductive health and rights     

Harald Kedde  Kerryn Rehse  Giovanni Nobre  Wessel van den Berg 《Sex education》2018,18(2):206-218

This paper details findings from an evaluation of a gender-transformative sexual and reproductive health and rights group education programme facilitated with young men aged 15–24 years in South Africa. A total of 475 young men participated in the group education programme. A self-administered pre- and post-questionnaire survey was conducted with a sample of the participants, and focus group discussions were facilitated. A total of 265 young men completed both the pre and post-questionnaires. Findings from the surveys as well as the focus group discussions showed positive changes in gender equitable attitudes, contraception and condom use. Results indicate that the young men who participated in the group education learned to identify harmful gender norms and actively questioned these constructs both within their personal lives and in the broader community. The intervention enabled some participants to envision alternative versions of masculinity and femininity, thus enabling them to adopt a new way of being, with transformed attitudes concerning household and gender roles.  相似文献   

A physically active lifestyle is related to a lower level of skin autofluorescence in a large population with chronic-disease (LifeLines cohort)     

Saskia Corine van de Zande  Jeroen Klaas de Vries  Inge van den Akker-Scheek  Johannes Zwerver  Andries Jan Smit 《运动与健康科学(英文)》2022,11(2):260-265

Background:Physical activity(PA)has substantial health benefits and is important in combatting chronic diseases,which have been associated with elevated levels of advanced glycation endproducts(AGEs).AGEs play a role in the aging process,and an association between PA and AGEs has been reported.We aimed to investigate the relationship between PA and AGE accumulation in a general population and in a population with chronic diseases.Methods:This large cross-sectional population study used data from adult participants in the LifeLines project,with participant information drawn from the LifeLines database as well data from patients with diabetes mellitus or renal and/or cardiovascular diseases.Tissue AGE accumulation was assessed non-invasively by skin-autofluorescence(SAF)using an AGE reader(DiagnOptics Technologies BV,Groningen,the Netherlands).PA was assessed using the short questionnaire to assess health-enhancing physical activity(SQUASH).Multivariate linear regression analyses were adjusted for age,body mass index,sex,and smoking status.Results:Data from 63,452 participants(general population n=59,177,chronic disease n=4275)were analyzed.The general population was significantly younger(43.58±11.77 years,mean±SD)and had significantly lower SAF(1.90±0.42 arbitrary units(AU))compared to the population with chronic disease(age:55.51±12.07 years;SAF:2.27±0.51 AU).In the group with chronic disease,more hours of moderate to vigorous physical activities per week were associated with lower SAF(β=-0.002,95%confidence interval(95%CI):-0.002 to-0.001).For the general population,there was no association between hours of moderate to vigorous activity and SAF(β=3.2×10^-5,95%CI:0.000-0.001,p=0.742).However,there was an association in the general population between total hours of PA per week and SAF(β=4.2×10^-4,95%CI:0.000-0.001,p<0.001),but this association was not found in the chronic disease population(β=-3.2×10^-4,95%CI:-0.001 to 0.000,p=0.347).Conclusion:Our study demonstrates that an inverse relationship exists between PA and AGE accumulation in the population with chronic disease.More hours of moderate to vigorous activity is associated a significantly decreased SAF.More PA is associated a lower SAF,even after for the established predictors(age,body mass index,smoking status,and sex).Our findings could help to promote health and prolong longevity.  相似文献   

Evidence of the relative age effect in football in Australia     

Robin van den Honert 《Journal of sports sciences》2013,31(13):1365-1374

Abstract

The birth date distributions of elite male and female footballers in Australia, from junior youth (age 14 and upwards) to senior (professional) players, were examined. A statistically significant relative age effect was found among junior male players, reducing in effect with increasing age. An inter-year relative age effect that became apparent among the players at national level in the Under-17 and Under-20 age groups, due to the timing of the respective World Cups for those age groups, was also identified. It is conjectured that this might lead to players born in certain years having a curtailed pathway in the elite game, leading to drop-out among this very elite group. In the case of women elite players, no significant relative age effect was found among youth players, possibly due to less fierce competition for places, although a significant effect was found to exist at senior elite level.  相似文献