It is well documented that people have positive responses to some words, such as kind and wonderful,  and negative responses to others, such as evil and nausea.  Recently, psychological experiments have revealed that people also have positive or negative responses to many nonsense words. This shows that people' s responses to words are conditioned not only by what the words mean, but also by how they sound.
The statement 'people's responses to words are engendered not only by what the words mean, but also by how they sound' is supported by the claim that people have positive or negative responses to many nonsense words in the argument.