Abstract
A continuing challenge to investigators of human-computer interaction issues is the selection of an appropriate methodology. A particularly difficult aspect of methodology has been the choice of a proper test instrument. In the past, small programs have been favored by researchers because they were relatively easy to manage in a controlled experimental setting. Unfortunately the relationship between the cognitive demands of small programs and of real-world software systems remains unclear. Large programs as task elements bear more resemblence to software in realistic software development settings but tend to be difficult to control in an experimental setting (cf. Moher & Schneider, 1981).
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