Usability requirements: how to specify, test and report usability

Overview of case studies

The main purpose of the PRUE project was to evaluate the business value of introducing the CIF into the purchasing and procurement process for different types of systems in a variety of contractual environments and countries.

One trial is for the originally envisaged role in the acquisition of corporate software (Ericsson/Electrolux). Another extends this to acquisition of a custom-designed web site (Ministry/SEMA). These trials both focus on evaluating whether a new web-based system meets requirements established by prior evaluation of the existing text-based system.

The two other trials assessed the usefulness of the CIF in negotiating for improvements in a custom-designed system, by evaluating the usability of an existing product to establish requirements for an improved version. The in2netlogic/prezzybox. com trial was in the UK where usability is well-established as an issue, and Robissa Travel/ExcelSoft was in Greece where usability is less well recognised.

Italian Ministry of Justice + SEMA Ericsson Telecom + Electrolux in2netlogic + prezzybox. com Robissa Travel + ExcelSoft
Product Web site: legal info Travel expense reporting Web site: ecommerce Travel management
Users Legal staff and public Office staff Public Travel agent staff
Existing system Traditional dial up Text based Existing web site Existing product
New system Web based Web based Improved version Improved version
Contractual relationship The Ministry will use CIF results as part of acceptance criteria Ericsson will use CIF results as part of acceptance criteria Basis for negotiation for improvements Basis for negotiation for improvements
Consumer organisation benefits Convenient and accurate legal information Increased productivity and quality of travel information Increased business Increased office efficiency

For information on case studies in the USA, see the IUSR web site.

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