Disability people need education too


Web Design Evaluation

Preece et al. define testing or evaluation asfocus on 'real problems, not imaginary ones'.
the process of 'systematically collecting(ibid.  2002:321)
data that informs us about what it is like
for a particular user or group of users toEvaluation with users underpins a
use a product for a particular task in auser-centred approach to design. Preece et
certain type of environment'. (Preece et al.al. refer to Gould and Lewis who identify
2002:317) That is to say that it is a processthree main characteristics of this approach.
where the interface is tested against theThere is an 'early focus on users and tasks'
practices and needs of the user. (Faulknerwhich means understanding users and tasks
1998:109) Evaluation is important in designthrough observation and analysis, whilst
as it aims to 'eradicate any problems thatactively involving users from the early
may be present in a system'. (ibid.stages of design. 'Empirical measurement'
1998:124) Evaluation and amendment of thegauges the performance and reactions of users
design at various stages of development helpsto storyboards and paper prototypes for
the designer to verify that the product isexample, in the early stages of development
suitable for the users' needs, that they canand subsequently to software prototypes or
use the product and indeed they like thesimulations for example. Another feature of a
product. (Preece et al. 2002:317-319) Preeceuser-centred approach is 'iterative design'
et al. refer to Tognazzini who asserts thatcharacterised by cycles of 'design, test,
evaluation also ensures that the design teammeasure and redesign'. (Preece et al.



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