- 17 RSSB - Human Factors Research Assistant
- 17 Diploma in Professional Studies
- 15 Prize for Academic Excellence
- The effect of increasing railway automation on the operator's and system provider's trust
Final Year Project
An interactive blue-light therapy alarm device to improve the sleeping patterns of visually impaired people
One of the key problems that visually impaired people face is regulating their sleep patterns to be able to keep to a 24-hour schedule. The alarm clock device incorporates timed blue-light therapy to stimulate users in the morning in combination with a unique non-sighted tactile interaction to prevent unnecessary external light stimulation during the night.
The effect of psychological change blindness on e-commerce website usability
Psychological blindness is the effect where the human does not recognise new or unexpected features within their visual field. This phenomenon is normally due to excessive visual disruptions, non-standard designs and outside stimuli. The effect can specifically be seen across various websites with large amounts of advertising, information or with standardised features located in unexpected places.
The aim of the study was to identify good and poor practice of psychological blindness in popular e-commerce and retail websites and test if the effect of change blindness was demonstrated through questioning and eye tracking. Change blindness is the ‘failure to detect a clear and obvious change that is within our field of vision’ (Davies & Beeharee, 2012). The hypothesis stipulated that the target users, of age 18-24, would experience similar levels of the change blindness effect across varying websites.
A methodical review was undertaken using the Internet Retailing (2017) list of the top 50 e-commerce websites for 2017 and the researcher used a set criteria to audit and identify any change blindness effects throughout the website. Good practice observed from other websites were paired with these effects. A user story was then created journeying through the various websites and tasks, without indicating to the participants of the psychological blindness effects which may be encountered. Questionnaires were used to test memory recall of the features and to obtain opinions on the difficulty of the tasks. Eye tracking software was used to support the findings.
Analysis of the eye tracking data and the questionnaires gave a clear insight into the range of disruption that the change blindness effect created and provided evidence for best practice website designs. The outputs included the perceived rated interference of the change blindness phenomenons alongside best practice redesigns of the websites.