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A Tale of Two Systems: The effects of executive function on UG Decisions Aaron Tesch

Rational Theories Of Decision-Making • Plato: The spirit world is rational but our decisions are contaminated by the physical world. • Stoics believed they needed to purge the emotional contamination to find truth. I reject your offer !

Utility Theories Absolute value ≠ Utility : St. Petersburg Paradox Utility can't be calculated because of limitations of human cognition, therefore we use heuristics and have psychological biases. However, still used in much of economic theory.

Emotional Theories • Freud's Id • Sex sells • Behavior is not always rational

Two-System Decision Models ,[object Object],[object Object],[object Object],[object Object]

Neural Evidence for Two-System Decision models ,[object Object],[object Object],[object Object]

Other Two-System Models? ,[object Object],[object Object],[object Object],[object Object],[object Object]

Possible Neurological Evidence for Two system model in the UG ,[object Object]

Priming Affective systems ,[object Object],[object Object],[object Object]

TMS on the DLPFC ,[object Object],[object Object]

Working Memory is Associated with the DLPFC ,[object Object]

Pilot Experiment (WM-Easy) ,[object Object]

Results of Acceptance Rate Analysis • Acceptance rates in the easy working memory task were significantly higher then the control group with no working memory prime. • There was also a significant interaction. Acceptance rates also decayed slower in the working memory condition then in the control condition.

Pilot Experiment (WM-Hard) ,[object Object]

r=-0.44* Results of Acceptance Rate Analysis • Acceptance rates are positively correlated with memory performance. i.e. they were negatively correlated with memory error rates as shown to the right.

Trial by Trial Analysis ,[object Object]

Limitations ,[object Object],[object Object]

Limitations cont. ,[object Object]

Experiment 1 ,[object Object],[object Object],[object Object]

Visual Digit Span Task ,[object Object],[object Object]

Ultimatum Game Trial ,[object Object],R T Y F G H V B N

Type of Trials ,[object Object],D,O 2 3 4 5 6 1 2,1 3,1 4,1 5,1 6,1 2 2,2 3,2 4,2 5,2 6,2 3 2,3 3,3 4,3 5,3 6,3 4 2,4 3,4 4,4 5,4 6,4 5 2,5 3,5 4,5 5,5 6,5

Outcomes ,[object Object],[object Object],[object Object]

Experiment 2: Affective Processing due to unfair feedback ,[object Object],Feedback R T Y F G H V B N

Experiment 3: Priming vs. Loading ,[object Object]

Condition Timelines ,[object Object],[object Object],[object Object],Loading condition Priming condition

Outcomes ,[object Object],[object Object]

Overall Outcomes ,[object Object],[object Object]

Discussion ,[object Object],[object Object]

Future Directions ,[object Object],[object Object],[object Object],[object Object]

Future Directions Cont. ,[object Object],[object Object]

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