title: Using a 'value-added' approach for contextual design of geographic information.
abstract: The aim of this article is to demonstrate how a 'value-added' approach can be used for user-centred design of geographic information. An information science perspective was used, with value being the difference in outcomes arising from alternative information sets. Sixteen drivers navigated a complex, unfamiliar urban route, using visual and verbal instructions representing the distance-to-turn and junction layout information presented by typical satellite navigation systems. Data measuring driving errors, navigation errors and driver confidence were collected throughout the trial. The results show how driver performance varied considerably according to the geographic context at specific locations, and that there are specific opportunities to add value with enhanced geographical information. The conclusions are that a value-added approach facilitates a more explicit focus on 'desired' (and feasible) levels of end user performance with different information sets, and is a potentially effective approach to user-centred design of geographic information.
authors.affiliation: Loughborough Design School, Loughborough University, Ashby Road, Loughborough LE11 3TU, UK. a.j.may@lboro.ac.uk
authors.forename: Andrew J
authors.initials: AJ
authors.lastname: May
mesh_terms: D000328:Adult; D001334:Automobile Driving; D002947:Cities; D003626:Data Display; D003657:Decision Making; D040362:Geographic Information Systems; D006801:Humans; D020377:Self Efficacy; D012985:Software Design; D013647:Task Performance and Analysis; D014584:User-Computer Interface