How predictable is spelling? Developing and testing metrics of phoneme-grapheme contingency

Conrad Perry*, Johannes C. Ziegler, Max Coltheart

*Corresponding author for this work

    Research output: Contribution to journalArticle

    35 Citations (Scopus)

    Abstract

    Prior research has purported to show that words with infrequent phoneme-grapheme correspondences are more difficult to spell than words with frequent phoneme-grapheme correspondences. Defining exactly what a phoneme-grapheme relationship is, however, is not necessarily straightforward. There are a number of different assumptions that can be made. In this study, we developed four metrics of sound-spelling contingency based on all monosyllabic English words, including those with complex morphology. These metrics differed in the extent to which they included assumptions about spelling. The psychological reality of these different metrics was evaluated against data from a large-scale study of skilled adult spelling and a nonword spelling experiment. The results suggest that when spelling, people are sensitive to positional information, morphological status, vowel type, and a number of more idiosyncratic constraints.

    Original languageEnglish
    Pages (from-to)897-915
    Number of pages19
    JournalQuarterly Journal of Experimental Psychology Section A: Human Experimental Psychology
    Volume55
    Issue number3
    DOIs
    Publication statusPublished - Jul 2002

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