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Frishkoff, Gwen A.; Perfetti, Charles A.; Collins-Thompson, Kevyn – Scientific Studies of Reading, 2011
We report a study of incremental learning of new word meanings over multiple episodes. A new method called MESA (Markov Estimation of Semantic Association) tracked this learning through the automated assessment of learner-generated definitions. The multiple word learning episodes varied in the strength of contextual constraint provided by…
Descriptors: Learning Theories, Sentences, Semantics, Reading Skills
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Perfetti, Charles A.; Wlotko, Edward W.; Hart, Lesley A. – Journal of Experimental Psychology: Learning, Memory, and Cognition, 2005
Adults learned the meanings of rare words (e.g., gloaming) and then made meaning judgments on pairs of words. The 1st word was a trained rare word, an untrained rare word, or an untrained familiar word. Event-related potentials distinguished trained rare words from both untrained rare and familiar words, first at 140 ms and again at 400-600 ms…
Descriptors: Memory, Paired Associate Learning, Vocabulary Development, Semantics
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Bell, Laura C.; Perfetti, Charles A. – Journal of Educational Psychology, 1994
Highly skilled and less skilled college readers (n=29) were compared on several information-processing and language-comprehension tasks that tap cognitive components of reading. Results confirm that both areas distinguish skilled and less skilled readers and suggest that reading ability is a continuous function. (SLD)
Descriptors: Adults, Cognitive Processes, College Students, Comparative Analysis