Target Risk

Dealing with the danger of death, disease
and damage in everyday decisions

by

Gerald J.S. Wilde
wildeg@post.queensu.ca

First edition (1994); see text on remainder of this webpage.

TARGET RISK 2, second, enlarged and updated edition (2001) (not on the internet) is available from PDE Publications, Toronto http://www.pde.drivers.com/store/books/014.php

Spanish translation, (updated from Target Risk 2) Versión al español: “Riesgo Deseado? El comportamiento humano ante el peligro” (translated by L. Daniel Ramirez Isaías, México, 2001), for internet version click on www.darsegu.com/content/view/22/74/

Portuguese version (updated from Target Risk 2, translated by Reinier J.A. Rozestraten) : “O Limite Aceitável do Risco, Uma nova Psicologia de Segurança e de Saúde, O que funciona? O que não funciona? E por que...”(São Paulo, Brasil, 2005); for publisher check . www.casadopsicologo.com.br

Russian translation (unauthorized) of part of the first edition.

For website check http://www.avtoclub.org.ru/books/gomeostas/gomeo-0.php

Japanese translation, (by Shigeru Haga, Tokyo, updated from Target Risk 2), expected to appear in 2006.

 

 


[TABLE OF CONTENTS]


Copyright © 1994 Gerald J.S. Wilde, Ph.D.
Professor Emeritus of Psychology, Queen's University
Kingston, Ontario, Canada K7L 3N6
e-mail: wildeg@post.queensu.ca

All rights reserved. No part of this book may be reproduced or transmitted in any form without written permission of the author.


PDE Publications
310-5334 Yonge Street
Toronto, Ontario, Canada M2N 6M2
Fax: (416) 767-7425
Tel: (416) 767-4885
e-mail: pde@drivers.com

Cover: Robert Delaunay, Disque (Paris, 1912)

ISBN 0-9699124-0-4


What's been said about Risk Homeostasis and Target Risk...

Dr. Gerald J.S. Wilde is Professor Emeritus of Psychology at Queen's University in Kingston, Ontario, Canada. Born in the Netherlands in 1932, he received his Ph.D. (cum laude) from the University of Amsterdam in 1962. He was visiting professor at the City University of New York 1964-65, and has been Chairman of various research groups of the OECD. He has been active in research and transportation safety since the late '60s and has received visiting scientist's awards from the governments of France and the Netherlands. His teaching and research interests include ergonomic psychology, skill acquisition, mass media messages and behaviour change, human behaviour in transportation, and the psychology of risk taking.

TO TAKE A RISK: to expose oneself to potential loss.
[from Latin risicare = to navigate around a cliff or rock]

TARGET RISK: the level of risk a person chooses to accept in order to maximize the overall expected benefit from an activity.
[Synonyms: accepted, preferred, tolerated, desired risk; set-point risk]

HOMEOSTASIS: a regulating process that keeps the outcome close to the target by compensating for disturbing external influences. For example, the human body core temperature is homeostatically maintained within relatively narrow limits despite major variations in the temperature of the surrounding air.
[from Greek homeo = matching, similar, and stasis = condition, state of affairs]

RISK HOMEOSTASIS: the degree of risk-taking behaviour and the magnitude of loss due to accidents and lifestyle-dependent disease are maintained over time, unless there is a change in the target level of risk.


Contents of First Edition
(now out of print and replaced by “Target Risk 2” (2001), with more empirical evidence.)

This book is dedicated by a boyhood friend to the memory of Damiaen van Doorninck, Jacques Jansen, Hans Cohen and Izaäc Gosschalk, who fell victim to the violence of fascists, and offered in lasting gratitude to the Canadians who liberated Deventer, their hometown in the eastern Netherlands, from Nazi tyranny on the tenth of April in 1945. All are immortal: the dead live on in the lives of the living.

  1. INTRODUCTION
  2. THE CONCEPT OF HOMEOSTASIS
  3. 2.1. Thermostatic control
  4. 2.2 Homeostasis does not mean constancy
  5. 2.3 The set point rules supreme
  6. TOWARD A COMPACT THEORY OF RISK TAKING
  7. 3.1 Taylor's study
  8. 3.2 Some possible consequences
  9. 3.3 Replicating Taylor's findings
  10. 3.4 The French connection
  11. THE THEORY OF RISK HOMEOSTASIS
  12. 4.1 The target level of risk
  13. 4.2 The perceived level of risk
  14. 4.3 Ongoing adjustment action
  15. 4.4 The resulting accident toll
  16. 4.5 Skills that influence road-user behaviour
  17. 4.6 Individual differences in skill
  18. 4.7 Homeostasis operates on the level of individuals
  19. 4.8 Conceptual underpinnings and wider extensions
  20. DEDUCTIONS AND DATA
  21. 5.1 Cross-sectional and longitudinal accident data
  22. 5.2 The accident rate "per km driven" as distinct from "per head of population"
  23. 5.3 A historical note on what happened between 1870 and 1910
  24. 5.4 Traffic accidents and the state of the economy
  25. 5.4.1 Additional analyses of unemployment rates
  26. 5.4.2 New questions arising
  27. 5.5 Is there no counterevidence?
  28. INTERVENTION BY EDUCATION
  29. 6.1 Education
  30. 6.2 Training
  31. 6.3 Lulled into an illusion of safety
  32. 6.4 Mass media messages for safety and health
  33. 6.4.1 Yardsticks of effectiveness
  34. 6.4.2 Message components
  35. REMEDY BY ENGINEERING?
  36. 7.1 The Munich taxicab experiment
  37. 7.2 The wheels of misfortune
  38. 7.3 Traffic lights
  39. 7.4 Motor-vehicle manufacturing standards
  40. ENFORCEMENT ACTION
  41. 8.1 Drinking and driving
  42. 8.2 Mandatory seatbelt wearing
  43. 8.3 The Nashville crackdown-slowdown study
  44. 8.4 The road safety record of Japan
  45. RISK HOMEOSTASIS IN THE LABORATORY
  46. 9.1 Brinkmanship
  47. 9.2 Are you taking too much risk or too little--and how can you tell?
  48. INDIVIDUAL DIFFERENCES
  49. 10.1 Personality, attitude and lifestyle
  50. 10.2 The unreliability of accident liability
  51. 10.3 Prospect and retrospect
  52. 10.4 Demographic characteristics
  53. MOTIVATING FOR SAFETY AND HEALTH
  54. 11.1 Punishing unsafe acts
  55. 11.2 Extending incentives for accident-free operation
  56. 11.3 Disincentives
  57. 11.4 Requirements for effective incentive programming
  58. 11.5 Comparing workers with drivers
  59. 11.6 What a government can do
  60. 11.7 The role of automobile insurance
  61. 11.8 Recapitulation
  62. FURTHER PERSPECTIVES
  63. 12.1 Expectationism
  64. 12.2 Epilogue

Last updated by Web Manager 2006

 


Copyright © 1994 Gerald J. S. Wilde, Ph.D.