| Summary: | This study investigates whether deletion neighbourhood frequency influences the processing of French written words, and whether it might also be influenced by individual differences in skilled adult readers. For this purpose, words with at least 1 higher-frequency deletion neighbour (e.g., pliage [folding]/plage [beach]) and others with no higher-frequency neighbour (e.g., morose [gloomy]) were presented in lexical decision (Experiment 1), progressive demasking (Experiment 2), and naming (Experiment 3) tasks. For each experiment, the participants' lexical skills were assessed by spelling, reading, and vocabulary tests. In Experiments 1-3, participants responded more slowly to words with at least 1 higher-frequency deletion neighbour than they did to words with no such neighbour. We also found evidence that the inhibitory effect of deletion neighbourhood frequency was sensitive to lexical skills in the naming task. These findings are discussed in terms of lexical competition underlying visual word recognition according to individual differences.
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