The McGurk Effect occurs when what you see by reading lips while simultaneously listening to a similar audio clip overrides the auditory sound. In other words, what we see overrides what we see. The video attached features Lawrence Rosenblum, the author of “See What I’m Saying”, and in the video, he shows the viewers first hand, the McGurk effect. The video opens with Rosenblum moving his lips to spell out “ba”. Simultaneously, the audio is playing the sound “ba”. After a few seconds of this, Rosenblum changes his lip movement to sound out “va”, while the audio remains untouched. However, as a viewer, you should hear the audio change as the lip movements change. To prove the theory, creators of the video put the two clips side by side and played the same audio previously heard. When one looks at the “ba” lip movements, they hear ba and vice versa with the “va” lip movements. This video proves to viewers that visual perception has the power to override auditory perception.