When people speak, they typically produced sounds that are reliably accompanied facial movement and early on infants show sensitivity to both auditory and visual cues to speech. One demonstration of this sensitivity is an audiovisual illusion called the McGurk Effect. When infants (and adults) hear an auditory stimulus (e.g. /ba/) while seeing an incongruent visual stimulus (e.g. /ga/), their perception of the sound is altered such that they hear something more like /da/ or /tha/. To our knowledge, the McGurk Effect has only been demonstrated for individual syllables. We hypothesize that visual components of speech perception may also alter word recognition at an early age. We will use a looking-while-listening paradigm to investigate whether a “visual mispronunciation” affects young children's recognition of familiar words (e.g. baby, kitty, etc.).