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Peer reviewedZwick, Rebecca; Senturk, Deniz; Wang, Joyce; Loomis, Susan Cooper – Educational Measurement: Issues and Practice, 2001
Compared four mapping item methods using data from the physical science test of the National Assessment of Educational Progress and studied the opinions of science content area experts about the difficulty of the items through a survey completed by 148 science teachers or scientists. Results of model-based mapping methods were more concordant with…
Descriptors: Comparative Analysis, Physical Sciences, Science Teachers, Science Tests
