Some words are spelled with more letters on the right side of the keyboard, others with more letters on the left. In a series of three experiments, the researchers investigated whether differences in the way words are typed correspond to differences in their meanings. They found that the meanings of words in English, Dutch and Spanish were related to the way people typed them on the QWERTY keyboard. Overall, words with more right-side letters were rated more positive in meaning than words with more left-side letters. This effect was visible in all three languages and was not affected by either word length, letter frequency or handedness.
The QWERTY effect was also found when people judged the meanings of fictitious words like “pleek,” and was strongest in new words and abbreviations like “greenwash” and “LOL” coined after the invention of QWERTY.Why should the positions of the keys matter? The authors suggest that because there are more letters on the left of the keyboard midline than on the right, letters on the right might be easier to type, which could lead to positive feelings. In other words, when people type words composed of more right-side letters, they have more positive feelings, and when they type words composed of more left-side letters, they have more negative feelings.