Gradience in morphological decomposability: Evidence from the perception of audiovisually incongruent speech

Abstract

Over the last three decades, priming and masking experiments and corpus frequency studies have dominated attempts to find ranking in the decomposability of words containing morphological affixes. Here we establish feasibility of using another experimental probe based on audiovisually incongruent speech stimuli. In response to such stimuli, a proportion of participants report percepts that differ in place of articulation from either the audio or the visual signal, typically reporting percept /t/ when receiving audio /p/ dubbed onto visual /k/. We study the systematic variation of this proportion, the McGurk fusion rate, using a small corpus with affixes