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Tom Loeys Beatrijs Moerkerke An Raes Yves Rosseel Stijn Vansteelandt 《Structural equation modeling》2013,20(3):396-407
Estimation of the direct effect of an exposure on an outcome requires adjustment for confounders of the exposure–outcome and mediator–outcome relationships. When some of the latter confounders have been affected by the exposure, then standard regression adjustment is prone to possibly severe bias. The use of inverse probability weighting under so-called marginal structural models has recently been suggested as a solution in the psychological literature. In this article, we show how progress can alternatively be made via G-estimation. We show that this estimation method can be easily embedded within the structural equation modeling framework and could in particular be used for estimating direct effects in the presence of latent variables. Moreover, by avoiding inverse probability weighting, it accommodates the typical problem of unstable weights in the alternative estimation approaches based on marginal structural models. We illustrate the approach both by simulations and by the analysis of a longitudinal study in individiduals who ended a romantic relationship. In this example we explore whether the effect of attachment anxiety during the relationship on mental distress 2 years after the breakup is mediated by rumination or not. 相似文献
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Liesje De Backer Hilde Van Keer Beatrijs Moerkerke Martin Valcke 《Metacognition and Learning》2016,11(2):187-213
We aimed to investigate how metacognitive regulation is characterised during collaborative learning in a higher education reciprocal peer tutoring (RPT) setting. Sixty-four Educational Sciences students participated in a semester-long RPT-intervention and tutored one another in small groups of six. All sessions of five randomly selected RPT-groups were videotaped (70 h of video recordings). Analyses were focussed on identifying time-bound evolutions with regard to (a) the frequency of occurrence of metacognitive regulation, (b) the low-/deep-level approach to regulation, and (c) the initiative (by tutors/tutees) for metacognitive regulation. Logistic regression models allowing change points were adopted to study evolutions over time. The results indicated that RPT-groups increasingly adopt metacognitive regulation (i.e. orientation and evaluation) as the RPT-intervention progressed. Regarding RPT-groups’ regulative approach, the results revealed a significant evolution towards deep-level metacognitive regulation (i.e. orientation and monitoring), despite a dominant adoption of low-level regulation strategies. With regard to the initiative, the results demonstrated that tutees started to initiate RPT-groups’ monitoring significantly more frequently as they became familiar with the RPT-setting. Orientation, planning, and evaluation remained tutor-centred responsibilities. 相似文献
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Giray Berberoglu Filip J. R. C. Dochy George Moerkerke 《European Journal of Psychology of Education - EJPE》1996,11(1):25-41
Entry assessment for higher education is a managerial and research topic in many European countries at this moment. Due to the increased claim for higher quality in education and the decreasing finances, universities seek for means to establish a high quality instream. Research has shown that types of entry examinations offer good possibilities to put “the right man on the right place”. Not only the quality of these examinations is an important issue, also systematic differences between student groups is a main point of attention. Turkey, using a two stage assessment for several years already, is a good example of the latter. Now that several universities think about selection at the front door, it might be worth to think about evaluating selection criteria and to look at method to avoid group bias for example. Evaluating the test items with respect to systematic differences between certain groups of students has become a crucial part of item analysis and validity studies among the test users. In the present study differential item functioning (DIF) analysis was carried out for the first stage of the University Entrance Examinations in Turkey by the use of four area indices. The differences in the magnitudes of the area indices have been compared with respect to the taxonomy of educational objectives the items are supposed to measure and the subject areas. The differences among the area indices were also evaluated and compared in the present study. Item characteristic curves were obtained across the sex and branch groups by using the BILOG package program. 相似文献
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Filip Dochy George Moerkerke Erik De Corte Mien Segers 《European Journal of Psychology of Education - EJPE》2001,16(2):163-177
In this contribution we concentrate on the features of a particular item format: items having as the last option “none of the above” (NOTA items). There is considerable dispute on the advisability of the usage of NOTA items in testing. Some authors come to the conclusion that NOTA items should be avoided, some come to neutral conclusions while others argue that NOTA items are optimal test items. In this article, we provide evidence to this discussion by conducting protocol analysis on written statements of examinees while answering NOTA items. In our investigation, a test containing 30 multiple-choice items was administered from 169 university students. The results show that NOTA options appear to be more attractive than options with specified solutions in those cases where a problemsolver fails. Also, a relationship is found between the quality of (incorrect) problemsolving and the choice of NOTA items: the more qualitative the incorrect problemsolving process is, the more likely the student is to choose for NOTA items. Overall, our research supports the statement that ‘the more confidence an examinee has in his worked solution, which is inconsistent with one of the specified solutions, the more eager he seems to choose “none of the above”. 相似文献
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Learning Environments Research - To develop the skills and competencies required in professional organisations, students have to reflect on their own behaviour. Many current assessment practices in... 相似文献
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F.J.R.C. Dochy M.S.R. Segers G. Moerkerke 《The Journal of Agricultural Education and Extension》2013,19(3):141-166
Abstract Does it help one to know how a Chateau Pichon Longueville Baron 1989 looks, smells and tastes in Montpellier, when in fact one is in the process of tasting a Pichon Longueville Baron 1990 at home in a dark and humid cellar at 14 degrees? How important is prior knowledge and assessment for learning in higher education? The present paper provides a theortical background concerning activation prior knowledge, using new assessment methods and applying a new learning process model referred to as powelful learning environments. Recent research has shown that increasing efficiency in learning can be achieved by introducing powerful learning, building on the students' prior knowledge and making use of multiple functions of assessment tools. Different concepts, methods and effects are explained in the paper with regard to their use in real classrooms. A model is outlined for integrating learning, instruction and assessment. Attendants to the session in Montpellier should not only be prepared to taste a good glass of French claret wine, but should also be interested in thinking and working interactively. The presentation itself will elaborate on some of these and will focus practical applications in agricultural higher education. 相似文献
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