Original Author: Georgios Christou
Hello, and welcome to this third and final part of a series on Usability Evaluation for Video Games. In the first part of this series (here) I talked about the necessity to have a framework upon which to base our understanding of player actions. In the second part (here) I gave some examples and ideas on how to use different types of formal usability evaluation methods, to gauge how usable our games are. In this third part, I will talk about some more exotic methods of usability evaluation. These methods, are just now starting to become affordable by the masses, because the technology that is required to perform them used to be extremely expensive. However, as all things technology, the tools’ prices are starting to fall, with a few tools out there that are actually in the affordable range, even by hobbyists. The measures that I will present here are all grouped under the name “psychophysiological measures”.
So what are these things?These measures receive input from various places of the human body. Usually, measures that fall under this category are eye-tracking, pupilometry, electroencephalography (EEG), electromyography (EKG), and galvanic skin response (GSR). To understand these, I will present each measure together with its related technology, and what that technology actually measures.