presentation debiasing m-azimi,amshirazi,hdarzi
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DBIASiNG!BY RICHARD P.LARRICK
INSTRUCTOR:DR.ISAIEE
Presented by: Amir MohammadShirazi Hamid Darzi Mehran Azimi
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OUTLINE Introduction(Rationality & Debiasing) Nature of Biases Motivational Strategies Cognitive Strategies Technological Strategies Adoption & Diffusion Future of Debiasing
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INTRODUCTION
Bridge The Gap
Descriptive Behavior
Normative Ideal
Debiasing
Strategies
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INTRODUCTION
Approaches:
1.People posses normative strategies2.Intuitive and normative strategies
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INTRODUCTIONPrescriptive Decision Making:
1.By Status Quo and Environment2.Increasing Decision Making Skills
Two Groups:3. Meliorists4. Apologists
Robustness
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INTRODUCTIONDebiasing requires Intervention
TWO STEPS:1.Recognition2.Correction
People Recognize and Correct their own Biases3. Feed back problem & Source of Error4. Uncertainty of Environment(Self Serving attributions
of ability)5. Compensation of Cultural Mechanism
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Approaches for Debiasing
• Specific Bias• Source of Bias
The nature of Biases
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AssociationisticStrategic (system 2)
Psychophysical
The nature of Biases
Second Approach: Source of Biases
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Psychophysical based errors
Shifting reference point
Inconsistent judge
The nature of Biases
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Association based errors
Activation of associated cognitions
Inhibition of unassociated cognitions
Narrow band information
The nature of Biases
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Strategy based errors
intuitive repertoire
Benefit-Cost calculation
The nature of Biases
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Debiasing Strategies
Technical Strategy
Motivational StrategyCognitive Strategy
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accountability
incentive
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Incentives
Incentives
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LOST PILOT EFFECT
Cognitive Capital
I DON’T KNOW WHERE I AM GOING, BUT I’M MAKING GOOD TIME.
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Incentives
Incentives
CLERICAL & MEMORIZATION TASKS
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Accountability
Accountability
Preemptive self criticismADVANTAGES
Greater effortAccuracyBetter performancePreventing biasesNeed to look consistent
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Potential Problems
Give the people what they wants
Justification-base Decision Bias
Accountability
Accountability
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Consider the oppositeTraining in rulesTraining in representationTraining in biases
COGNITIVE STRATEGIES
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CONSIDER THE OPPOSITE
Anchoring
Overconfidence
Hindsight
ASK:What are some reasons that my initial judgment might be wrong?
What about simply listing reasons?
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TRAINING IN RULES
How inferior strategies can be replaced by the better one?
Experience Training
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TRAINING IN RULES
The rules can be thought in the form of mathematics and logic
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TRAINING IN RULES
The rules can be applied in everyday life decisions
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TRAINING IN REPRESENTATIONS
People reason better about “frequencies” than about “probabilities”
ProbabilitiesFrequencies
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• Information as “Probabilities” %0.8 of women have breast cancer The probability of “positive result” for
those who have cancer is %90The probability of “positive result” for
those who don’t have cancer is %7
TRAINING IN REPRESENTATIONS
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• Information as “Frequencies”‘Eight’ out of every 1000 women have
breast cancerOf this ‘eight’ women ‘seven’ will have
a positive resultOf the ‘992’ women who don’t have
cancer ‘70’ will still have a positive result
TRAINING IN REPRESENTATIONS
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TRAINING IN BIASES
Is “Awareness” Enough?
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TECHNOLOGICAL
STRATEGIES
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GROUP DECISION MAKING
Increase sample size of experienceSynergyError-checking system
Social cost of rejection Free riding Anchoring
Disadvantages
Benefits
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LINEAR MODELS& STATISTICAL TECHNIQUES
Experts can be replaced by models based on their judgments
Theses models can make better prediction than experts .
U(A) = w1 X1 + w2 X2 + w3 X3
Proper & ImproperLinear Models
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MUA (Multiattribute Utility) Analysis
Decision Analysis
Decision support system (DSS)
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The main question is:
ADOPTION AND DIFFUSION
How to encourage people to adopt better decision
strategies?
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People resist being debiased
ADOPTION AND DIFFUSION
Me?!Biased?!
IMPOSSIBLE!!!
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People resist being Debiased
“Doing it Wrong” for all these years?!
Relinquish control over a decision process
Techniques are alien and complex and the benefits are noisy, delayed or small
ADOPTION AND DIFFUSION
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Adoption and diffusion
Promote Adoption
Compliance to behavioral norm
Internalization of beliefs
Vs.Internalization of beliefs
Compliance to behavioral norm
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Management Tools
ADOPTION AND DIFFUSION
TQM Six Sigma
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ADOPTION AND DIFFUSION
Statistical tools
THE FIRST TO BE ABANDONED
Defect?Where is it?
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• Senior management do not practice endorsement
• Doubtfulness of outside consultants
• Separation from coworkers
Adoption and diffusion
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ADOPTION AND DIFFUSION
“Learn it, Teach it, Use it, Inspect it”How can it be fixed?
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Adoption and diffusion
Simple
Domain-Specific
Social
Top-Down
Complex
Domain-General
Indivisual
Bottom-Uop
Vs.
Cognitive Reapair
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The Most Successful
Adoption and diffusion
Simple
Domain-Specific
Social
Top-Down
Complex
Domain-General
Individual
Bottom-Up
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Informal Debiasing techniquesADOPTION AND DIFFUSION
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The higher you are, the harder you fall !f
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ANY QUESTION?