"We know how a word is spoken can affect its meaning. So can how it’s typed," said cognitive scientist Kyle Jasmin of the University of College London, co-author of a study about the so-called "QWERTY effect" in Psychonomic Bulletin and Review. "As we filter language, hundreds or thousands of words, through our fingers, we seem to be connecting the meanings of the words with the physical way they’re typed on the keyboard." The effect may arise from the fact that letter combinations that fall on the right side of the keyboard tend to be easier to type than those on the left. "If it’s easy, it tends to lend a positive meaning. If it’s harder, it can go the other way," Jasmin said.
Mark Liberman isn't buying it.