Task 4 - Reasoning Flashcards

1
Q

Inductive Reasoning

A

Making a generalized conclusion from premises referring to particular instances

  • > from specific to general
  • > conclusions probably but not necessarily true
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2
Q

Deductive Reasoning

A

Drawing of conclusions from general to specific

  • > are definitely valid provided other statements are assumed to be true
  • > mostly based on formal logic
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3
Q

Informal Reasoning

A

Everyday reasoning:

  • inductive rather than deductive
  • analogical reasoning: solving a problem retrieving information that lead to success in past
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4
Q

Confirmation

A

Attempt to find supportive or confirming evidence for one’s hypothesis

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5
Q

Falsification

A

Proposing hypotheses and then trying to falsify them by experimental testing
-> subject to confirmation bias

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6
Q

Positive testing

A

Numbers used are instances of your hypothesis

  • > used to check whether hypothesis is valid (if it isn’t it won’t work)
  • > more likely to lead to falsification of hypothesis than negative testing
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7
Q

Negative testing

A

Numbers used do not conform to your hypothesis

-> if the set of numbers don’t work it confirms your hypothesis

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8
Q

Conditional Reasoning

A
"reasoning with if"
consists of propositions 
if P then Q: If it is raining, Nancy gets wet
-modus ponens
-modus tollens
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9
Q

Modus ponens

A

if A, then B; given A we can validly infer B;

e. g. if it is raining, Nancy gets wet,
- > correct

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10
Q

Modus tollens

A

when “If A, then B” and premise: “B is false”,

conclusion: “A is false”
e. g. if it is raining, Nancy gets wet, Nancy is not wet , therefore it is not raining
- > correct

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11
Q

Denial of the antecedent

A
Invalid deductive reasoning:
e.g.: if you are a ski instructor, you have a job
-> you are not a ski instructor
-> therefore you don't have a job
false assumption of modus tollens
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12
Q

Affirmation of the consequent

A

Invalid deductive reasoning.
E.g.: if Bill Gates owns Fort Knox he is rich,
Bill Gates is rich, therefore he owns Fort Knox
-> false assumption of modus ponens

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13
Q

Two System Theory

A

System 1: pragmatic and semantic strategy,
System 2:
Inhibitory and Generatitive strategy

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14
Q

Pragmatic Strategy

A

System 1
processing problems as they would be processed informally during a conversation
-associated with numerous error

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15
Q

Semantic Strategy

A

System 1

  • making use of background knoweldge but not of the form of argument in the problem
  • associated with moderate performance
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16
Q

Inhibitory Strategy

A

System 2
Inhibiting the impact of the pragmatic strategy and background knowledge on performance
-works well with some problems

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17
Q

Generative Strategy

A

System 2

  • combining inhibitory strategy with use of abstract analytical processing
  • consistently good performance on all types of problems
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18
Q

Wason Selection Task

A
Often used to test deductive-reasoning
-conditional rule used
4 cards lie on table, each has letter on one side and number on other, told that rule applies to all cards
e.g.: R, G, 2, 7
which cards need to be turned
-> R on one side means two on other side, R and 7 need to be checked
-> R: modus ponens
-> 7: modus tollens
-> 2: affirmation of the consequent
-> G: denial of the antecedent
19
Q

Matching Bias

A

Tendency for participants to choose items matching those explicitly named in the rule (regardless of whether the matched items are correct)
e.g. on Wason Selection Task

20
Q

Social Contract Theory

A

Proposes that problems using deontic rules leads to better performance by people since they are more similar to what people have to deal with in everyday life
-> better with deontic than indiciative rules: directs peoples attention to importance of disproving the rule rather than just finding evidence consistent with it

21
Q

Deontic Rules

A

Rules concerned with detection of rule violation;
typically easier to understand for people because the underlying structure of the problem is easier to understand for people
-better task performance than with indicative rules

22
Q

Syllogistic Reasoning

A

Logical argument consisting of two premises and a conclusion

  • validity depends on whether it follows logically from premises
    e. g. all children are obedient, all girl guides are children
  • > all girls are obedient, conclusion logically from premises
23
Q

Belief Bias

A

Error in syllogistic reasoning;

tendency to accept invalid conclusions that are believable and reject valid conclusions that seem unbelievable

24
Q

Theories of Deductive Reasoning

A

Mental Model Theory

Dual Systems Theory

25
Mental Model Theory
People use information contained in premises to construct mental model - > representation of possible state-of-affairs in the real world - > valid: we cannot constuct a mental model inconsistent with the conclusion (counterexamples accepted) - > limited through working memory capacities (highly demanding)
26
Principle of Truth
Mental model notion that we represent assertions by constructing mental models by what is true but not what is false
27
Mental Model Theory limitations
People engage in deductive reasoning less than assumed - ignores individual differences, - processes of mental model formation under-specified
28
Dual Systems Theory
``` System 1: -unconscious processes, emerged at early stage of evolution -involves parallel processing -independent of general intelligence System 2: -conscious processes, recently evolved -rule-based, serial processing -limited capacity (demands more) -cognitive processes evaluating mental models -> better reasoning performance ```
29
Principles of human reasoning
Singularity principle Relevance principle Satisficing principle -> explain most errors made by human reasoning
30
Singularity principle
Only a single mental model is considered at any given time
31
Relevance principle
Most relevant mental model based on prior knowledge and current context is considered
32
Satisficing principle
current mental model evaluated by analytic system and accepted if adequate -> often leads people to accept conclusions that could be true but aren't necessarily
33
Brain Systems in thinking and reasoning
Prefrontal cortex - > right dorsolateral PFC: plan generation - > left dorsolateral PFC: plan execution
34
Brain system inductive/deductive reasoning
Activation in left lateral prefrontal cortex, and bilateral dorsal frontal, parietal, and occipital areas Dual systems support
35
Reasoning Fallacies
``` Appeal to popularity Argument from ignorance False cause Irrelevance Begging the question Slippery slope ```
36
Appeal to popularity
Argues for claim purely because other people (without clear expertise) accept it -> Fallacy
37
Argument from ignorance
Fallacy that since we don't have any evidence against some claim, it must be true
38
False cause
Argues that there is correlation between two things and then concludes on that basis, that cause and effect has been shown -> Fallacy
39
Irrelevance
Attempts to support claims by way of reason not relevant to the claim -> fallacys
40
Begging the question
Assume as a premise what it claims to be proving. Seeking to support a conclusion by appealing to the same conclusion -> fallacy
41
Slippery slope
Claims that innocent-looking first step will lead to bad consequences but doesn't prove how or why one will lead to the other
42
Analytical Thinking and Religious Disbelief
Analytical thinking promotes religious disbelief
43
Mortality salience and analytic thinking
Mortality salience impairs analytic thinking | -> executive resources might be mobilized to suppress death thoughts