There are three articles about physiological measures in collecting UX data on the table today. I will try to seek out the pros and cons, to see which would be the best for use in our own UX evaluation process. All of these methods are not always used in evaluating prototypes of certain type. Some of them are used mainly in web design etc. I need to find the most suitable approach for me to evaluate user experience.
The three physiological measuring approaches are:
Visual Complexity Evaluation
Pupillary dilation monitoring
Eye tracking techniques
Visual Complexity Evaluation is used often in website design, but its outcomes and effects are not always fully utilized or understood. Within the studies a hypotheses was proposed and tested, to see, if increasing a websites complexity would have a detremental cognitive and emotional impact on users. Users want their web environments to be usable and appealing. Adding visual complexity may play a huge factor in their first impressions and even later usage decisions. If it works this way than designing appealing and simple webpages might work the other way around also and attract users to a webpage, regardless of the content. These performed studies also included passive viewing task (PVT) and visual search task (VST) methods.
Pupillary dilation monitoring during music-induced aesthetic responses (chills). The study concentrated on the correlation of music-induced chills and pupil reaction. While listening to different songs, participants were asked to actively press a button when they got a chill when listening to a song. The point where participants pressed the button was then correlated to pupil reaction. The study concluded that pupil reaction during passive music listening can be monitored and translated into aesthetic responses.
The third study was performed with touch-screen devices and soft keyboards. Eye tracking was used to evaluate the user experience of participants when using different soft keyboard layouts. The aim of the study was to provide input into soft keyboard layout design to help users type more effectively.
I think that our concept, which is a collaborative music making experience, could benefit a lot from pupillary dilation monitoring. That is to see if people get engaged and enjoy the process itself. On the secon hand, the experience needs to be as simple as possible for the users to step in and start using our machine. Thus visual complexity needs to be toned down to the very minimum in order to attract ausers. Either of these methods could be then used to evaluate the user experience on our concept/prototype.