The authors present data from 2 feature verification experiments designed to determine whether distinctive features have a privileged status in the computation of word meaning. They use an attractor-based connectionist model of semantic memory to derive predictions for the experiments. Contrary to central predictions of the conceptual structure account, but consistent with their own model, the authors present empirical evidence that distinctive features of both living and nonliving things do indeed have a privileged role in the computation of word meaning. The authors explain the mechanism through which these effects are produced in their model by presenting an analysis of the weight structure developed in the network during training. (PsycINFO Database Record (c) 2007 APA, all rights reserved)
Cree, George S.; McNorgan, Chris; McRae, Ken
Journal of Experimental Psychology: Learning, Memory, and Cognition. 2006 Jul Vol 32(4) 643-658
There is at present no clear consensus as to the nature of the relations between oral vocabulary and specific literacy skills. The present study distinguished between vocabulary breadth and depth of vocabulary knowledge to better explain the role of oral vocabulary in various reading skills. A sample of 60 typically developing Grade 4 students was assessed on measures of receptive and expressive vocabulary breadth, depth of vocabulary knowledge, decoding, visual word recognition, and reading comprehension. Concurrent analyses revealed that each distinct reading skill was related to the vocabulary measures in a unique manner. Receptive vocabulary breadth was the only oral vocabulary variable that predicted decoding performance after controlling for age and nonverbal intelligence. In contrast, expressive vocabulary breadth predicted visual word recognition, whereas depth of vocabulary knowledge predicted reading comprehension. The results are discussed in terms of interrelations between phonological and semantic factors in the acquisition of distinct reading skills. (PsycINFO Database Record (c) 2007 APA, all rights reserved)
Ouellette, Gene P.
Journal of Educational Psychology. 2006 Aug Vol 98(3) 554-566
