Task Analysis and Usability Analysis of a Ticket Machine
Research Paper (undergraduate) from the year 2008 in the subject Ergonomics, grade: 1,3, University of Derby (Institut für Psychologie), course: Ergonomics, language: English, abstract: This report examines the car park ticket machine (TM). The Hierarchical Task Analysis (HTA; Sheperd, 2000; cited in Mills, 2007) is used as a framework: Firstly, psychological issues related to using the TM are discussed. Secondly, an usability analysis of the TM is conducted, whereupon principles of usability (Jordan, 1998) are applied. The result is that the design has major issues. Subsequently, an improved design is sketched out – considering identified issues. Finally, an evaluation method for the redesign is introduced.
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Analysis and Usability arrow keys backspace beeping sound blocked from reaching Checklist of Psychological Checklist of Usability cognition necessary Cognitive load cognitive resources cognitive walkthrough conceptual model considered in designing contextual factors Cue for function designing this function e.g. enter e.g. time pressure enter reg enter registration number entering the reg Errors might result Expectancy of success expected that user feedback frustration aggression theory German National Library getting the ticket Hierarchical Task Analysis i.e. go back illuminate coin slot Info processing capacity Inform user Information processing Long-term memory lot of cognition mobile phone Motivation drops number-pad numpad Press green button problems performance processing capacity limited processing o Top-down Psychosocial factors Read instructions rejected coin slot result from activation Stressed users e.g. tell user Ticket Machine Redesign top down cognition Usability Analysis Usability issues user control user resources user would expect visual clarity visual search wrong number entered Zimbardo & Gerrig