Else Nygren
Nygren E (1996) Interaction with Dynamic Documents. A field study of information use in intensive care. Report no. 71/96 from Uppsala University Center for Human-Computer Studies, Uppsala, Sweden.
Dynamic documents are, in this paper, defined as single-page documents
(paper- or screen-based), where the layout is fixed, but the content varies
over time. A field study was conducted concerning the use of dynamic
documents in the health care domain. The methods used were interviews,
observations of work, and administration of simple reading tests with
copies of authentic documents that were manipulated in various ways. Paper
documents, as well as print-outs of screen displays, were used as
originals. The results showed that experienced subjects had learned to
recognise variations in features that were correlated to variations in
content. The patterns formed by filled and unfilled fields in the paper
documents were especially informative. Variations in this pattern could
correctly be attributed to, for instance, variations in the condition of a
patient.
The results were used to give a tentative description of general
interaction with dynamic documents. Components of this interaction task
could be grouped into identification, quality control and evaluation. A
speculation is that, in parallel to the ordinary reading process, there is
a number of automatic processes involved in the interaction. It was
observed, that many components of interaction that seem to be perceived
automatically in a paper-based setting, required attentional reading in a
corresponding computerized setting. Because reading always requires
consciously controlled processing, this probably accounted for the higher
cognitive load that was experienced in interaction with the computerized
documents. These assumptions have far reaching implications for user
interface design and, therefore, call for further study.