Decision Making and Reasoning Flashcards
Reasoning
Thought process that brings an individual to a conclusion that guides decision making
People make _______ decisions a day or ______ deicisions per hour
35,000 decisions a day
* Roughly 2,000 decisions per hour
Neuroeconomics
- The study of how we make (value-based) decisions
The aim of neuroeconomics is to figure out the rules that guide our reasoning. Are there situations in which we won’t be so logical or rule followers? When that’s the case, what happens to our decisions?
Decision making relates to the _______, important in emotional processing, and the ________ ______, important in executive functions
Emotional processing : amygdala
Executive functions : prefrontal cortex
Decision making is a function of the ____ and _______ we are in
State and situation
Inductive reasoning
Concrete form of reasoning
Inferences : making general conclusions from specific observations
Cons of inductive reasoning
- The conclusions can be false; “probably but not definitely true”–type of reasoning
-Overuse of heuristics (assumptions without question) can lead to stereotyping
Why is inductive reasoning useful ?
Basis of some human learning from experience : useful for making associations
- Applying learned rules to new situations is essential in language learning
Deductive reasoning
Abstract form of reasoning
* Using general theories to reason about specific observations
Development of induction
age 7 to 11 : concrete operational state of development
- Still have difficulty solving more hypothetical problems
Deduction development
Teenage years
- Start to consider what-if situation and use abstract deductive reasoning
There is greater involvement of the … for deductive than inductive tasks
inferior frontal gyrus of the frontal cortex
There is greater involvement of the … for inductive versus deductive reasoning
dorsal lateral prefrontal cortex
System 1 of thought
automatically, and with little effort thoughts (inductive)
System 2 of thought
slower and requires more effort (deductive)
Syllogisms
old form of deductive reasoning
* Premises are presumed to be true
* Determine if the premise statements support the conclusion based on the logical structure, not content
Structure of syllogisms
- Major premise (general)
- Minor premise (specific)
- Conclusion (test)
The premises each share a term with the conclusion
Validity of syllogisms
Are the conclusion true given the premises’ logical form?
* Valid = logical rules NOT Truth = world knowledge / content
* A valid structure (All A are B : All B are C: Therefore, all A are C)
All statements syllogisms
Premise describes a truth in which all A are B (not necessarily that B are A too)
E.g.
All men are mortal
Socrates is a man
Therefore, Socrates is a mortal
Note : “All men are mortal” does not mean “All mortal are men”
Negative statements syllogisms
Premise says No A is a B
Also means no B is A
E.g.
All psychology professors have PhDs
No PhD holders are human
Therefore, psychology professors are not human
Some statements syllogisms
Some A are B.
“At least one, possibly all”
E.g.
No provinces with coastlines are provinces that are landlocked
Some provinces are landlocked
Therefore, some provinces are not states with coastlines
Ambiguous : can lead to atmosphere effect
Atmosphere effect
People rate a conclusion as valid when the qualifying word (e.g., ‘all,’, ‘some’) in the premise match those in the conclusion
- Go with the overall mood : that seems correct
Mental model theory
- People construct mental simulations of the world based on statements (e.g., syllogisms) to judge logic and validity : difficult to do with negative judgment
- our knowledge guides our reasoning, we do not always follow logic
Omission bias
- Biased thought that ”withholding is not as bad as doing”
- Inaction is harder to classify as wrong than action
- People tend to react more to strongly to harmful actions than to harmful inactions