ANSI (1991). American national standard for criteria for safety symbols: Z535.3-1991. Washington, DC: National Electric Manufactures Association.
2.
ANSI (1998). American national standard for criteria for safety symbols: Z535.3-1998. Washington, DC: National Electric Manufacturers Association.
3.
BattigW.F.MontagueW.E. (1969). Category norms for verbal items in 56 categories: A replication and extension of the Connecticut category norms. Journal of Experimental Psychology Monograph, 80, 1–46.
4.
HancockH.E.RogersW.A.FiskA.D. (1999). Understanding age-related differences in the perception and comprehension of symbolic warning information. Proceedings of the Human Factors and Ergonomics Society 43rd Annual Meeting (pp.617–621). Houston, TX: Human Factors Society.
5.
RousseauG.K.LamsonN.RogersW.A. (1998). Designing warnings to compensate for age-related changes in perceptual and cognitive abilities. Psychology & Marketing, 15, 643–662.
6.
RogersW.A.RousseauG.K.LamsonN. (1999). Maximizing the effectiveness of the warning process: Understanding the variables that interact with age. In ParkD.C.MorellR.W.ShrifenK. (Eds.), Processing of medical information in aging patients: Cognitive and human factors perspectives (pp.267–290). London: Lawrences Erlbaum Associates.
7.
WolffJ.S.WogalterM.S. (1998). Comprehension of pictorial symbols: Effects of context and test method. Human Factors, 40, 173–186.