Origins
The aesthetic-usability effect was first studied in the field of human–computer
interaction in 1995. Researchers Masaaki Kurosu and Kaori Kashimura from the Hitachi Design Center tested 26
variations of an ATM UI, asking the 252 study participants to rate each design on ease of use, as well as
aesthetic appeal. They found a stronger correlation between the participants’ ratings of aesthetic appeal and
perceived ease of use than the correlation between their ratings of aesthetic appeal and actual ease of use.
Kurosu and Kashimura concluded that users are strongly influenced by the aesthetics of any given interface,
even when they try to evaluate the underlying functionality of the system.
Source