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Why Analysts Draw: The effect of Diagrams Supporting uML use cases
Abstract
An experiment was undertaken to compare effectiveness of use cases with and without supporting use case diagrams. The Cognitive Theory of Multimedia Learning is used to hypothesize diagrams improve the effectiveness of use cases by providing visual cues aiding model viewers in selecting and integrating relevant information. The level of understanding developed by participants viewing either uses cases or use cases with a use case diagram was measured using comprehension, retention and problem solving tasks. Results support the hypothesis that participants developed a significantly higher level of understanding when viewing UML use cases with the support of a use case diagram. This suggests practitioners should consider combining a visual representation with use cases to achieve higher levels of understanding in persons viewing these descriptions.
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