Eye movements when reading transposed text: the importance of word beginning letters

White, Sarah J., Johnson, Rebecca L., Liversedge, Simon P. and Rayner, Keith (2008) Eye movements when reading transposed text: the importance of word beginning letters. Journal of Experimental Psychology: Human Perception and Performance, 34 (5), 1261-1276. (doi:10.1037/0096-1523.34.5.1261). (PMID:18823209)

Abstract

Participants' eye movements were recorded as they read sentences with words containing transposed adjacent letters. Transpositions were either external (e.g., problme, rpoblem) or internal (e.g., porblem, probelm) and at either the beginning (e.g., rpoblem, porblem) or end (e.g., problme, probelm) of words. The results showed disruption for words with transposed letters compared to the normal baseline condition, and the greatest disruption was observed for word-initial transpositions. In Experiment 1, transpositions within low frequency words led to longer reading times than when letters were transposed within high frequency words. Experiment 2 demonstrated that the position of word-initial letters is most critical even when parafoveal preview of words to the right of fixation is unavailable. The findings have important implications for the roles of different letter positions in word recognition and the effects of parafoveal preview on word recognition processes.

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