Increasing the Noticeability of Warnings: Effects of Pictorial,Color,Signal Icon and Border

Abstract

Because of the importance of noticeability on subsequent comprehension and compliance to warnings, guidelines suggest increasing the salience or conspicuity of warnings. Surprisingly, only a small amount of research has examined different methods of increasing the noticeability of warnings. Therefore, the current research orthogonally manipulated four salience variables (pictorial, color, signal icon and border) to determine their effect on noticeability of warning information. Subjects viewed 96 simulated alcohol labels on a computer, half with a warning and half without. Subjects indicated whether or not a warning was on the label and response latencies were recorded. The results showed that warnings containing a pictorial, color or an icon had significantly faster response times than warnings without them. However, the addition of a border did not improve response times. More detailed analyses showed interactions between the four salience manipulations. These results demonstrate that pictorials, color and icons can enhance the noticeability of warning information. Moreover, it is clear that these salience manipulations interact with each other and that they should not be used indiscriminately without adequate knowledge of these interactions.

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References

Adams

A. S.

Lien-tsang

(1981). The coding of symbol signs. Hazard Prevention. 5–7.

American National Standards Institute (1987). ANSI Z535.2-Draft-1987: American National Standard for Environmental and Facility Safety Signs, New York.

Anderton

P. J.

Cole

B. L.

(1982). Contour separation and sign legibility. Australian Road Research, 12, 103–109.

Asper

(1972). The detectability of two slow vehicle warning devices. Journal of Safety Research, 4, 85–89.

Bloomfield

J. R.

(1979). Visual search with embedded targets: Color and texture differences. Human Factors, 21, 317–330.

Carter

R. C.

Cahill

M. C.

(1979). Regression models for search time for color-coded information displays. Human Factors, 21, 293–302.

Christ

R. E.

(1975). Review and analysis of color coding research for visual displays. Human Factors, 17, 542–570.

Cunitz

R. J.

(1981). Psychologically effective warnings. Hazard Prevention, 17, 5–7.

Easterby

R. S.

Hakiel

S. R.

(1977). Safety Labelling of Consumer Products: Shape and Colour Code Stereotypes in the Design of Signs. AP Report No. 75. College House, Gosta Green, Birmingham, B4 7ET, University of Aston, December 1977.

10.

Ells

J. G.

Dewar

R. E.

Milloy

D. G.

(1980). An evaluation of six configurations of the railway crossbuck sign. Ergonomics, 23, 359–367.

11.

FMC (1985). Product Safety Sign and Label System. Santa Clara, CA: FMC Corporation.

12.

Friedmann

(1988). The effect of adding symbols to written warning labels on user behavior and recall. Human Factors, 30, 507–515.

13.

Gill

R. T.

Barbera

Precht

(1987). A comparative evaluation of warning label designs. In Proceedings of the Human Factors Society 31st Annual Meeting. Santa Monica: The Human Factors Society, 476–478.

14.

Jones

M. R.

(1962). Color coding. Human Factors, 4, 355–365.

15.

Laughery

K. R.

Young

S. L.

(in press). Consumer product warnings: Design factors that influence noticeability. In Proceeding of the 11th Congress International Ergonomics Association..

16.

Otsubo

S. M.

(1988). A behavioral study of warning labels for consumer products: Perceived danger and use of pictographs. In Proceedings of the Human Factors Society - 32nd Annual Meeting. Santa Monica, CA: The Human Factors Society, 536–540.

17.

Peters

G. A.

(1984). 15 cardinal principles to ensure effectiveness of warning system. Occupational Health and Safety. 76–79.

18.

Phillips

R. J.

Noyes

(1980). A comparison of colour and visual texture as codes for use as area symbols on thematic maps. Ergonomics, 23, 1117–1128.

19.

Westinghouse Electric Corporation. (1981). Product Safety Label Handbook, Trafford, PA: Westinghouse Printing Division.

20.

Wogalter

M. S.

Godfrey

S. S.

Fontenelle

G. A.

Desaulniers

D. R.

Rothstein

P. R.

Laughery

K. R.

(1987). Effectiveness of warnings. Human Factors, 29, 599–612.

21.

Young

S. L.

Wogalter

M. S.

(1988). Memory of instruction manual warnings: Effects of pictorial icons and conspicuous print. In Proceedings of the Human Factors Society - 32nd Annual Meeting. Santa Monica, CA: The Human Factors Society, 905–909.

22.

Young

S. L.

Wogalter

M. S.

(1990). Effects of conspicuous print and pictorial icons on comprehension and memory of instruction manual warnings. Human Factors, 32, 637–649.

23.

Zlotnik

M. A.

(1982). The effects of warning message highlighting on novel assembly task performance. In Proceedings of the Human Factors Society - 26th Annual Meeting. Santa Monica: The Human Factors Society, 93–97.