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ERIC Number: ED358109
Record Type: Non-Journal
Publication Date: 1993-Apr
Pages: 7
Abstractor: N/A
Reference Count: N/A
Formative Evaluation of a Generic Decision Aid for Classroom Use.
Freeman, Jared T.; Guillen, Julio
Results of a formative evaluation of a decision aid for students of taxonomic domains such as statistics or biology are reported. The tool, XPT-EASE, is designed to allow a student to search a taxonomy by traversing its branches in an arbitrary order, presumably the order simplest for the student, rather than by starting from the root node and proceeding from one connected branch to the next. XPT-EASE is a generic shell for decision aids. For this study, it was equipped with a database concerning statistical methods. Eight undergraduates in a statistics course participated, half using a flexible version of XPT-EASE and half using a static version. In the flexible version, the attributes were presented in a single menu and their order was randomized on every presentation, while in the static version, only one attribute was presented at a time. The flexible version pared the list of candidate techniques as the students selected attribute values, but in the static version, the list was not trimmed until all selections were made. Results indicate that the flexible version boosts speed and accuracy with which subjects identify statistical techniques relative to the static version, which presents queries in a set order as do traditional decision aids. (SLD)
Publication Type: Reports - Evaluative; Speeches/Meeting Papers
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A