NDLI: The perceived usefulness of computer information sources:a field study

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Volume 21, Issue 4, April 1990

A new magazine on computer-human interaction?

A progress report from the SIGCHI committee on publications/communications

The standards factor

Reading on human factors in computer systems

A taxonomy of user interface terminology

The perceived usefulness of computer information sources

Computer-human interface issues in the design of an intelligent workstation for scientific visualization

International user interfaces

Preparing a presentation

Pioneering HCI down under

PUMS and programmers

ABSTRACTS OF INTEREST

Volume 21, Issue 3, Jan. 1990

Volume 21, Issue 2, Oct. 1989

Volume 21, Issue 1, July 1989

The perceived usefulness of computer information sources:a field study

Content Provider	ACM Digital Library
Author	Halstead-Nussloch, Richard Granda, Richard E. Winters, Joan M.
Abstract	A joint IBM-SHARE field study surveyed 229 computer users about their use of a range of information sources. On a questionnaire, each respondent described a situation where information was required to use a computer. The respondent then specified all the information sources that were consulted, judged the degree to which each met the information needs, and estimated the time required to obtain the information. With a keyword technique, responses were coded to identify user cognitive states from the situation descriptions. Three unique cognitive states identified: Learning, Solving, and Refreshing.For learning and problem solving, the best online and human sources are used at about the same rate, 70% of the time; but, humans are rated more effective at 80% versus 60% for online sources. When effective, human sources require more time, on average 24 minutes versus 9 minutes for online sources. The conclusion drawn from the study is that human sources are rated more effective than online sources because humans have four critical advantages. They are interactive speakers and listeners. They can be selective in the information presented. Humans can query at multiple levels of discourse. Humans can assess the relevance of the information presented.
Starting Page	35
Ending Page	43
Page Count	9
File Format	PDF
ISSN	07366906
DOI	10.1145/379106.379116
Journal	ACM SIGCHI Bulletin (SGCH)
Volume Number	21
Issue Number	4
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	1992-07-01
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Content Type	Text
Resource Type	Article

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