LAWS90210 Chap.4 Biases and Bounded Rationality
Biases and Bounded Rationality
Bounded rationality explains why decision makers satisfice and use heuristics under limited cognition, time and information. The lecture names confirmation, anchoring, overconfidence, contrast, hindsight, outcome and in-group effects, while the fast-and-frugal account shows that a short process can fit a regular environment.
This chapter trains a causal diagnosis: cue, mental operation, affected judgment, legal consequence and matched safeguard. A bias label is only the beginning of analysis. The writer must identify what information acts as a cue, how it changes search or evaluation, which judgment is affected and why that effect matters to the relevant legal standard.
Anchoring may pull an estimate toward a starting number; confirmation may shape which facts are sought; hindsight may alter reconstruction after an outcome is known. Those routes call for different evidence and protections. A rival explanation is essential because a consistent pattern may reflect expertise, lawful relevance or a feature of the environment rather than distortion.
The fast-and-frugal account supplies an important counterweight. A simple rule can perform well where cues are reliable and feedback is available, while an elaborate process can introduce noise or obscure responsibility. Institutional evaluation should compare accuracy, consistency, transparency, distribution and cost rather than equate more deliberation with better judgment.
Safeguards should also be matched: independent estimates address anchoring, structured search can counter confirmation and ex ante records can reduce hindsight. The final recommendation needs a monitoring plan, because a protection that reduces one error may create delay, ritual compliance or excessive confidence in the corrected process.
What this chapter covers
- 01
Satisficing instead of optimising
- 02
Prospect theory and reference points
- 03
Anchoring and confirmation
- 04
Hindsight and outcome bias
- 05
Contrast and in-group effects
- 06
Fast-and-frugal heuristics
Worked example · free
Analyse sequence effects in sanction review
- 1Identify the severe or minor comparison case as the cue.
- 1Explain a contrast effect and possible anchoring on the sanction range.
- 1Consider lawful contextual difference as a rival explanation.
- 1Recommend pre-stated criteria, independent estimates and an order audit.
Key terms
- Satisficing
- Satisficing means choosing an option that meets an aspiration level instead of exhaustively finding the optimum.
- Confirmation bias
- Confirmation bias favours information that supports an existing belief and neglects material that challenges it.
- Anchoring
- Anchoring pulls a later estimate toward an initial number or position.
- Contrast effect
- A contrast effect changes evaluation because another item presented nearby becomes the reference.
- Hindsight bias
- Hindsight bias makes a known outcome appear more foreseeable than it was before the event.
- Fast-and-frugal heuristic
- A fast-and-frugal heuristic uses a small number of cues that may perform well in a matching environment.
Biases and Bounded Rationality FAQ
Are heuristics always inaccurate?
No. They reduce cognitive effort and can exploit stable cues in a regular environment. The correct comparison uses error, consistency, feedback and institutional values. A long procedure can perform worse than a short one, while a shortcut can still be unacceptable if it is opaque or distributes mistakes unfairly.
How do I avoid a label-only bias answer?
Name the cue, describe the mental operation, identify the judgment affected and explain why the influence is legally irrelevant or distorting. Present a rival explanation and choose evidence that could discriminate between them. Then match the safeguard to that specific route.
What is the difference between hindsight and outcome bias?
Hindsight makes the result seem predictable after it is known. Outcome bias evaluates a prior decision by the result rather than the quality of the process and information available at the time. Both require ex ante reconstruction, but they target different distortions in retrospective review.
Exam move
Build a bias table with five columns: cue, operation, judgment, evidence and safeguard. Add a useful-heuristic counter-case for every label. Practise reconstructing the information available before an outcome, and evaluate safeguards for both correction and unintended cost. Use short vignettes to practise mechanism discrimination.
Rewrite the same facts so that anchoring, confirmation and hindsight would each be the strongest explanation, then list the observation that separates them. For hindsight and outcome bias, make a dated information record that includes only what was knowable at the decision point. For anchoring, note who supplied the starting figure and whether independent judgment occurred first.
For confirmation, track both search and interpretation of disconfirming material. Turn every diagnosis into an institutional design exercise. Choose one safeguard and specify its operating point, responsible actor and failure signal. A checklist can redirect search but may become mechanical; a second reviewer can add perspective but may inherit the same frame; blinding can remove a cue while also withholding relevant context.
State that trade-off rather than listing every possible response. When reviewing an essay, highlight any paragraph that moves directly from a bias name to invalidity. Insert the missing causal and legal steps: what changed, why the change is irrelevant or distorting, what evidence supports the inference and which legal consequence follows. This produces a bounded claim that is easier to defend.
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