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Bias in Risk Decisions and Reporting

Risk response · 1 min read

Biases to watch

Biases: optimism, anchoring, confirmation, availability, groupthink, sunk cost, with how to counter each.

Where bias creeps in

StageHow bias shows up
EstimatingOptimistic likelihoods; anchoring on the first number
Choosing responsesFavouring familiar controls; sunk cost
ReportingSelective data, softened wording, misleading scales

Countering bias

  • Collect independent estimates before discussion.
  • Use incident and industry data as a check.
  • Ask what evidence would change the conclusion.
  • Invite challenge from people outside the team.
  • Use the same scales and periods in every report.

Example. In a workshop, the CIO said ransomware was “very unlikely here”, and nobody disagreed. A follow-up anonymous estimate showed most participants rated it likely. The scenario was re-rated and treated.

How the exam asks about it

If the question asks…The answer is usually…
Reduce groupthink in estimatesAnonymous methods such as Delphi
Project continues because of money spentSunk cost bias; judge future value
BEST check on optimistic estimatesIncident and industry data
Report hides an unfavourable trendPresent complete, consistent data

In short

  • Common biases include optimism, anchoring, confirmation, availability, groupthink and sunk cost.
  • Bias affects estimates, the choice of response and how risk is reported.
  • Structured methods, data and independent challenge reduce bias.
  • Anonymous estimation such as Delphi reduces anchoring and groupthink.
  • Reports can be biased by selective data, misleading scales or softened wording.

Exam traps

  • Assuming experienced people aren't biased.
  • Letting the most senior person speak first in estimation workshops.
  • Continuing a project because of money already spent.
  • Rating a risk higher simply because a similar incident was in the news.

Slides

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CRISC · Domain 3 · Risk response

Bias in Risk Decisions and Reporting

The cognitive biases that distort risk estimates, responses and reports, and the structured methods a risk practitioner uses to keep decisions objective.

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