Click to increase image sizeClick to decrease image size Additional informationNotes on contributorsClas‐Uno FrykholmClas‐Uno Frykholm is currently a consultant to the ministry of education in Namibia.Ragnhild NitzlerRagnhild Nitzler is a lecturer in the Department of Education, University of Umeå, S‐902 37 Umeå, Sweden where she is also involved in a research project aiming at developing new strategies for educational evaluation.
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Frykholm et al. (1993) studied this question.
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