The two-stage model of inspection performance suggested in a previous paper was tested in laboratory conditions. Four subjects participated in an experiment to estimate the visual search and decision making components of an inspection task using light circular targets of low contrast on a dark empty field. Predicted and measured performance on the inspection task were compared. It was found that the prediction of independence of component tasks and additivity was upheld. In predicting speed/accuracy trade-off, the model's performance was better for the high contrast conditions than for the more difficult low contrast conditions.
Get full access to this article
View all access options for this article.
References
1.
BloomfieldJ. R.Theoretical approaches to visual search In DruryC. G.FoxJ. G. (Eds.) Human reliability in quality control.London: Taylor & Francis, 1975.
2.
DruryC. G.The effect of speed of working on industrial inspection accuracyApplied Ergonomics, 1973, 4, 2–7
3.
DruryC. G.Inspection of sheet materials—model and dataHuman Factors, 1975, 17, 257–265.(a)
4.
DruryC. G.Human decision making in quality control In DruryC. G.FoxJ. G. (Eds.) Human reliability in quality control.London: Taylor & Francis, 1975.(b)
5.
GretherW. F.BakerC. A.Visual presentation of information In Van CottH. P.KinkadeR. G. (Eds.) Human engineering guide to equipment design.Washington, D. C.: U. S. Government Printing Office, 1972.
6.
HohleR. H.Component process latencies in reaction times of children and adults In LipsittL. P.SpikerC. C. (Eds.) Advances in child development and behaviour. (Vol. 3) New York: Academic Press, 1967.
7.
HowarthC. I.BloomfieldJ. R.A rational equation for predicting search times in a simple inspection taskPsychonomic Science, 1969, 17, 226–227
8.
SchoonardJ. W.GouldJ. D.MillerL. A.Studies of visual inspectionErgonomics, 1973, 16, 365–379
9.
WilliamsL. G.Target conspicuity and visual searchHuman Factors, 1966, 8, 80–92
10.
WinerB. J.Statistical principles in experimental design.New York: McGraw Hill,1971.
