Midterm #1 Flashcards

1
Q

Availability Heuristic

A

judging the frequency or probability of an event or attribute by asking ourselves how easily we can bring examples to mind from memory.

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2
Q

Belief Perseverence

A

the tendency to continue holding a belief even if its original support has been discredited, and in the face of contrary evidence

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3
Q

Cognitive Illusions

A

an involuntary error in our thinking or memory due to System 1, which continues to seem correct even if we consciously realize it’s not

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4
Q

Cognitive Pitfalls

A

a common, predictable error in human reasoning. Cognitive pitfalls include mental glitches uncovered by cognitive psychologists, as well as logical fallacies

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5
Q

Cognitive Reflection

A

the habit of checking initial impressions supplied by System 1, and overriding them when appropriate

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6
Q

Confirmation bias

A

the tendency to notice or focus on potential evidence for our pre-existing views, and to neglect or discount contrary evidence. Confirmation bias can be present with our without an underlying motive to have the belief in the first place

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7
Q

Evidence primacy effect

A

in a process where information is acquired over time, the tendency to give early information more evidential weight than late information. This tendency arises when we develop opinions early on, leading to confirmation bias when interpreting later information, or simply a failure to pay as much attention to it

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8
Q

Heuristic

A

a cognitive shortcut used to bypass the more effortful type of reasoning that would be required to arrive at an accurate answer. Heuristics are susceptible to systematic and predictable errors

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9
Q

Motivated Reasoning

A

forming or maintaining a belief at least partly because, at some level, we want it to be true. This manifests itself in selective standards for belief, seeking and accepting evidence that confirms desired beliefs, and ignoring or discounting evidence that disconfirms them

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10
Q

Skilled intuition

A

the ability to make fast and accurate judgments about a situation by recognizing learned patterns in it. This requires training under specific kinds of conditions.

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11
Q

System 1

A

the collection of cognitive processes that feel automatic and effortless but not transparent. These include specialized processes that interpret sensory data and are the source of our impressions, feelings, intuitions, and impulses. (The distinction between the two systems is one of degree, and the two systems often overlap, but it is still useful to distinguish them.)

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12
Q

System 2

A

the collection of cognitive processes that are directly controlled, effortful, and transparent. (The distinction between the two systems is one of degree, and the two systems often overlap, but it is still useful to distinguish them.)

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13
Q

Transparency

A

the degree to which information processing itself (rather than just its output) is done consciously, in such a way that one is aware of the steps being taken.

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14
Q

Accuracy

A

the extent to which our beliefs reflect the way things actually are, much like a map reflects the way that a territory is. The concept of accuracy applies not only to binary beliefs, but also to degrees of confidence. For example, if the cat is not on the mat, then believing that the cat is definitely on the mat is less accurate than believing it’s probably on the mat.

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15
Q

Argument

A

A series of claims presented as support for a conclusion

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16
Q

Bias blindspot

A

the tendency to fail to recognize biases as they affect us, even when we recognize them in others

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17
Q

Biased Evaluation

A

evaluating the strength of potential evidence in a way that is influenced by our initial view, whether it’s motivated or not. This is one mechanism that leads to confirmation bias

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18
Q

Binary Belief

A

treating beliefs as if they are on/off. For example, we either believe that the cat is on the mat or that the cat is not on the mat, without allowing for different degrees of confidence

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19
Q

Considering the Opposite

A

a technique to reduce biased evaluation of evidence, where we ask ourselves either one of two questions: (i) How would I have treated this evidence if I had the opposite belief? (ii) How would I have treated this evidence if it went the opposite way?

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20
Q

Decoupling

A

separating our prior degree of confidence in a claim from our assessments of the strength of a new argument or a new piece of evidence about that claim

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21
Q

Degrees of Confidence

A

treating beliefs as coming with different levels of certainty. Just as we can be absolutely certain that x is true, we can also think that x is probably true, that x might be true, or that x is probably not true

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22
Q

Evaluation Stage

A

the second stage in the reasoning process, when we assess the strength of the potential evidence we’ve gathered.

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23
Q

Evidence

A

a fact is evidence for a claim if coming to know it should make us more confident in that claim. The notion of evidence is more rigorously defined in Chapter 5

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24
Q

Introspection Illusion

A

the misguided assumption that our own cognitive biases are transparent to us, and as a result, that we can diagnose these biases in ourselves through introspection

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25
Q

Optional Stopping

A

allowing the search for evidence to end when convenient; this may skew the evidence if (perhaps unbeknownst to us) we are more likely to stop looking when the evidence collected so far supports our first or favored view

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26
Q

Possibility Freeze

A

the tendency to only consider one or two possibilities in detail, and thereby end up too confident that they are correct

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27
Q

Restricted Search

A

the tendency not to seek out the full range of alternative views or the full range of evidence that favors each view. Along with biased evaluation, restricted search is an instance of confirmation bias.

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28
Q

Search stage

A

the first stage of the reasoning process, where we identify a range of possibilities and any evidence that may support them.

29
Q

Updating on the evidence

A

revising our prior beliefs in response to new evidence, so that the confidence we have in a belief will match its degree of support

30
Q

Updating Stage

A

the third and final stage in the reasoning process, when we revise our degrees of confidence appropriately

31
Q

Ambiguity

A

when it is unclear which word or sentence structure a speaker intends to express, because they look or sound the same. (That is, the same spoken or written forms express different meaningful words or sentences.) See lexical ambiguity and syntactic ambiguity

32
Q

Bare Plurals

A

the use of a plural noun phrase without a determiner (e.g., “Canadians started laughing” instead of “some Canadians started laughing”).

33
Q

Borderline cases

A

cases where it is unclear whether a category applies to an individual, and not because we need more facts about the individual (e.g., you might sit on something that seems somewhat like a chair and somewhat like a stool).

34
Q

Conclusion

A

the statement expressing the belief that our argument is meant to support.

35
Q

Conclusion Indicators

A

expressions that often signal the presence of a conclusion (e.g., therefore, so, thus, as a result).

36
Q

Deductive Argument

A

an argument whose premises are presented as entailing its conclusion

37
Q

Deductive Validity

A

an argument is deductively valid when its premises entail its conclusion

38
Q

Directly Perceptual Beliefs

A

beliefs that are supported directly by perception, rather than by other beliefs

39
Q

Implicit Premise

A

a claim that is left unstated, but which is taken for granted in making an argument

40
Q

Inductive Argument

A

an argument whose premises are presented as providing support for its conclusion but not entailing it. In these cases, the truth of the premises is not supposed to guarantee the truth of the conclusion with certainty. Instead, the premises are just intended to provide support for the conclusion

41
Q

Inference

A

a single step in a line of reasoning. We take these steps in our reasoning to arrive at a belief because we take that belief to be supported by other beliefs

42
Q

Suppositional Strength

A

a measure of how well-connected the premises are to the conclusion of an argument. The suppositional strength of an argument is a matter of how much evidence the premises would provide for the conclusion if we suppose they are true

43
Q

Interim Conclusion

A

a conclusion that is supported by some premises in the argument in which it is found, but which also provides support for a further conclusion of the argument

44
Q

Lexical Ambiguity

A

when it is unclear which of many possible words, which share the same written or spoken form, the speaker is intending to express (e.g., the absent-minded professor was arrested for not finishing his sentence)

45
Q

Premise Indicators

A

expressions that often signal the presence of a premise (e.g., because, since, as, given that, seeing as)

46
Q

Premises

A

the statements expressing the supporting beliefs in an argument, which support the conclusion

47
Q

Principle of Charity

A

when interpreting someone’s argument, we should always try to identify the best version of the argument that the author could plausibly have intended to put forward

48
Q

Self-Evident Beliefs

A

beliefs that are so obviously true that we don’t know how we would even go about supporting them (e.g., “1+1=2” or “green is a color”)

49
Q

Standard Form

A

a representation of an argument in terms of an ordered series of declarative sentences, with each premise and the conclusion (or conclusions) labeled. Next to each conclusion, it should be noted which premises directly support that conclusion, and whether that support is inductive or deductive

50
Q

Syntactic Ambiguity

A

when it is unclear which sentence structure a speaker is intending to express (e.g., man shoots neighbor with machete)

51
Q

Vagueness

A

when a word, concept, or distinction has borderline cases (where it is unclear whether the word/concept/distinction applies)

52
Q

Vagueness Neglect

A

assuming that real and useful distinctions with clear cases on either side can’t also have borderline cases

53
Q

Affirming the Consequent

A

a deductively invalid logical form where P is inferred from the premises If P then Q and Q

54
Q

Antecedent

A

in a conditional, the clause that expresses the condition—that is, the clause immediately following if

55
Q

Conditional

A

a statement composed of two sentential clauses joined by if…then…. (Sometimes then is omitted, as in: If Bob starts dancing, I will leave.)

56
Q

Consequent

A

in a conditional, the clause that expresses what is said to follow if the condition given by the antecedent obtains, usually immediately preceded by then.

57
Q

Counterexample

A

an example that shows that a universal claim is false: for example, if Betty is happy, then Betty is a counterexample to the claim Everyone is unhappy—assuming the speaker is really talking about everyone! As we know, for a logical form to be deductively valid requires that every instance of it is deductively valid. So it is sometimes possible to show that a logical form is not valid by providing a counterexample to this universal claim—namely an instance of it that is not deductively valid. Such a counterexample will be particularly vivid if the premises are actually true and the conclusion is actually false.

58
Q

Deductively valid argument

A

what makes an argument deductively valid is that its premises entail its conclusion: if the premises were true, conclusion would have to be true.

59
Q

Deductively valid logical form

A

what makes a logical form deductively valid is that every argument with that form is deductively valid.

60
Q

Denying the antecedent

A

a deductively invalid logical form where not Q is inferred from the premises If P then Q and not P.

61
Q

Disjunction

A

the disjunction of two sentences P and Q is a sentence that is true as long as either P is true or Q is true, and false only when both P and Q are false. It can be formed by combining P and Q with either…or….

62
Q

Disjunctive Syllogism

A

deductively valid logical form where Q is inferred from the premises Either P or Q and not P.

63
Q

Flipping the Argument

A

assuming that the conclusion is false, and asking whether all of the premises could still be true. If so, the premises do not entail the conclusion.

64
Q

Hypothetical Syllogism

A

deductively valid logical form where If P then R is inferred from If P then Q and If Q then R

65
Q

Logical Form

A

A structure that can be shared by different arguments; it can be illustrated by replacing certain words or sentences with variables until the argument are the same.

66
Q

Modus ponens

A

deductively valid logical form where Q is inferred from the premises If P then Q and P.

67
Q

Modus Tollens

A

deductively valid logical form where not P is inferred from the premises If P then Q and not Q.

68
Q

Negation

A

the negation of a sentence is true when the original sentence is false, and false when the original sentence is true. Often formed by inserting not into the sentence that is being negated