Several current international comparative large-scale assessments of educational achievement (ICLSA) make use of "Rasch models", to address functions essential for valid cross-cultural comparisons. From a historical perspective, ICLSA and Georg Rasch's "models for measurement" emerged at about the same time, half a century ago. However, the…

When selecting standardized reading tests for purposes of decision making, the school psychologist must answer several questions, such as "What reading skills do I wish to assess?" or "How do I judge if the test is technically adequate?" Recommendations for test selection are made within the context of these questions.…