Document Detail

Naive judgements of stimulus-response compatibility.
MedLine Citation:
PMID:  20737331     Owner:  NLM     Status:  MEDLINE    
An experiment is reported that is an extension of Payne (1995) and of Vu and Proctor (2003). These authors used various light/key arrangements to determine the ability of naive subjects to rate the usability of interface designs and found that naive judgements were not accurate, apart from selecting a best design. In this experiment, there were one, two, four and eight arrangements of lights and response keys with varying levels of compatibility between them. Response time is shown to be determined by two main factors: the level of response uncertainty (the number of light/key combinations); the correlation between stimulus-light and response key location, accounting for up to 93% of the experimental variance. Subjective response time (SRT), or judged response time, was responsive to the level of response uncertainty and also the correlation between light/key combinations, showing good correspondence to actual reaction times. It was found that SRT showed a stronger relationship to actual response time when subjects were presented with the full set of situations that they were to respond to, prior to judgements being made, rather than just individual sets for comparison. In interface design it is essential that, in order to reduce reaction times and error rates, there is a high level of user expectancy between locations of the stimulus and corresponding response. This research indicates how designs might be evaluated, based on the geometrical layout of stimuli and response arrangements.
Errol R Hoffmann
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Ergonomics     Volume:  53     ISSN:  1366-5847     ISO Abbreviation:  Ergonomics     Publication Date:  2010 Sep 
Date Detail:
Created Date:  2010-08-25     Completed Date:  2010-12-29     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0373220     Medline TA:  Ergonomics     Country:  England    
Other Details:
Languages:  eng     Pagination:  1061-71     Citation Subset:  IM; S    
Department of Mechanical Engineering, University of Melbourne, Victoria, Australia.
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MeSH Terms
Human Engineering / methods*
Photic Stimulation*
Psychomotor Performance
Reaction Time*
User-Computer Interface
Young Adult

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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