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Related Experiment Videos

Is optimistic bias influenced by control or delay?

J M Kos1, V A Clarke

  • 1School of Psychology, Faculty of Health and Behavioral Sciences, Deakin University, Geelong, Victoria 3217, Australia.

Health Education Research
|October 26, 2001
PubMed
Summary

Optimistic bias, the tendency to underestimate personal risk, was greater for events perceived as controllable. This bias, however, did not differ based on the event

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Area of Science:

  • Psychology
  • Behavioral Science
  • Health Psychology

Background:

  • Optimistic bias is a prevalent cognitive bias where individuals perceive their risk of negative events as lower than that of others.
  • The underlying mechanisms and influencing factors of optimistic bias, particularly concerning different event characteristics, remain incompletely understood.

Purpose of the Study:

  • To investigate whether optimistic bias varies based on the perceived controllability and delay associated with negative life events.
  • To examine the relationship between event characteristics (control and delay) and the magnitude of optimistic bias.

Main Methods:

  • A sample of 100 adults (aged 18-30) was recruited via telephone directory.
  • Participants were interviewed to assess their perceived personal risk versus average risk for four negative events: skin cancer, car accidents (driver/passenger), and hearing aid use.
  • Perceptions of control and delay for each event were also assessed, followed by repeated-measures MANOVA for data analysis.

Main Results:

  • Optimistic bias was evident across all four negative life events studied.
  • A significantly greater optimistic bias was observed for events perceived as high in control (skin cancer, driving accident) compared to low-control events (passenger accident, hearing aid use).
  • The perceived delay associated with an event did not significantly influence the magnitude of optimistic bias.

Conclusions:

  • Perceived control is a significant factor modulating optimistic bias, with higher control leading to greater bias.
  • Delay does not appear to be a significant moderator of optimistic bias.
  • Findings have implications for designing targeted health promotion strategies and encouraging self-protective behaviors by considering perceived event controllability.

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