Abstract
Sixty-four primary school boys were classified as being high or low in vocabulary and randomly assigned to a language mediation instruction or non-instructed condition. Children were individually administered CVC’s, paralogs, and simple words in a three trial paired-associate learning task. Locus of facilitation was found primarily in upper vocabulary groups and for familiar words rather than paralogs and CVC’s. Low vocabulary subjects produced fewer mediators and were less likely to get an item correct when a mediator was given. The performance of students with well-developed vocabularies was linked to their ability to manipulate language and language-based tasks. These data offer a partial explanation why vocabulary tests predict future school success, independent of overall intelligence.
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