Natural vs manmade causes
Number of people affected
Occupational vs nonoccupational exposure
Personal awareness of risk or danger
Personal experience and knowledge
Personal influence or responsibility
Possibility of error
Probability or frequency of adverse events or effects
Reversibility of effects
Severity of effect (for example, major vs minor, large vs small, fatal vs survivable, painful vs painless)
Size of the population at risk
Spatial distribution of risks
Speed with which adverse events occur
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Jenni, K.E. 1997. Attributes for Risk Evaluation. Ph.D. Dissertation, Carnegie Mellon University, Pittsburgh, PA.
Litai, D., D. Lanning, and N. Rasmussen. 1983. The public perception of risk. Pp. 213-224 in The Analysis of Actual Versus Perceived Risks , V. Covello, W. Flamm, J. Rodericks and R. Tardiff, eds. New York: Plenum Press.
Lowrance, W.W. 1976. Of Acceptable Risk: Science and the Determination of Safety. Los Altos, CA: W. Kaufmann.
Rowe, W.D. 1977. An Anatomy of Risk. New York: Wiley.
Slovic, P., B. Fischhoff, and S. Lichtenstein. 1984. Behavioral decision theory perspectives on risk and safety. Acta Psychologica 56:183-203.
Vlek, C. and P.J. Stallen. 1980. Rational and personal aspects of risk. Acta Psychologica 45:273-300.