Empirical comparisons of elicitation methods provide guidance to engineers for the selection of the best method for a given design goal. This work explores how alterations to the context (i.e, setting, prompts) of storytelling sessions impacted the types of user needs collected from 22 emergency room (ER) nurses. Six user need sets, comprised of 477 narratives detailing an experience relating to a healthcare quality aim, were quantitatively compared. The results of the study yielded a set of decision rules and decision trees to aid the selection of an appropriate storytelling protocol that facilitates formative usability design.
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