Logic Test #2 Study Guide Flashcards

1
Q

What are the 3 Mental Acts?

A

Simple Apprehension
Judgment
Deductive Inference(Composition/Division)

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2
Q

What are the 3 Verbal Expressions?

A

Term
Proposition
Syllogism

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3
Q

What is Logic?

A

The science of right thinking or The act of thinking

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4
Q

Why are terms important?

A

They are good for understanding [arguements]

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5
Q

What does a Logical Form include?

A

Subject, Predicate, & Copula

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6
Q

What do “S, C, P” all express?

A

They are abbreviations for the subject-term, predicate-term, and copula

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7
Q

What does a Proposition include?

A

Subject-term, Predicate-term, & Copula

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8
Q

What is an example of a Proposition?

A

“All men are mortal”
“Socrates is a man”
“Socrates is mortal”

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9
Q

How do we derive a Contraposition?

A

Obvert it, Convert it, Obvert it again = Contraposition

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10
Q

Nominative Predicate?

A

It tells us about the subject

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11
Q

Logical Form

A

form in which a sentence must be in, in order to be handled logically

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12
Q

Proposition

A

a sentence or statement that expresses truth or falsity

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13
Q

Judgment

A

the mental act whose verbal expression is a proposition

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14
Q

Quality

A

(of a proposition) has to do with whether it’s affirmative or negative

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15
Q

Quantity

A

(of a proposition) has to do with whether it’s universal or particular

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16
Q

Contradictory Statements

A

statements that differ in both quality & quantity

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17
Q

Contraries

A

statements that are both universal statements, but differ in quality

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18
Q

Subcontraries

A

statements that are both particular statements, but differ in quantity

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19
Q

Subalterns/Subalternates

A

statements that have the same quality, but differ in quantity

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20
Q

Distribution

A

the status of a term in regard to its extension

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21
Q

Obversion

A

the change in quality and negation of the predicate

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22
Q

What are the 2 Qualities?

A

Affirmative(Affirmo)
Negative(Nego)

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23
Q

What are the 2 Quantities?

A

Universal(singulars)
Particular

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24
Q

Conversion

A

the switch of the subject(S) with the predicate(P)

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25
Particulars
a subset of universals- all particulars are derived from universals
26
Which statements are Contraries?
A & E
27
Which statements are Subcontraries
I & O
28
Which statements are Subalterns/Subalternates?
A with I & E with O
29
Which statements are Contradictories?
A with O & E with I
30
What is the form of A statements?
All S is P
31
What is the form of E statements?
No S is P or All S is not P
32
What is the form of I statements?
Some S is P
33
What is the form of O statements?
Some S is not P
34
Rule of Contradiction
contradictory statements are statements that differ in both quality & quantity
35
Rule of Contraries
2 statements that are contrary to one another, if they're both universals, but differ in quality
36
Rule of Subcontraries
2 statements that are subcontrary, if they're both particular, but differ in quality
37
Rule of Subalterns/Subalternates
2 statements that are subalternate, if they have the same quality, but differ in quantity
38
1st Law of Opposition
contradictories can't at the same time be true nor at same time be false
39
2nd Law of Opposition
contraries can't at the same time both be true, but can at the same time both be false
40
3rd Law of Opposition
subcontraries may at the same time both be true, but can't at the same time both be false
41
4th Law of Opposition
subalterns may both be true or false. If particular is false, universal is false; If universal is true, then particular is true; otherwise, then status is indeterminate
42
What parts of an A statement are Distributed and Undistributed?
Subject-term is DISTRIBUTED Predicate-term is UNDISTRIBUTED
43
What parts of an I statement are Distributed and Undistributed?
Subject-term is UNDISTRIBUTED Predicate-term is UNDISTRIBUTED
44
What parts of an E statement are Distributed and Undistributed?
Subject-term is DISTRIBUTED Predicate-term is DISTRIBUTED
45
What parts of an O statement are Distributed and Undistributed?
Subject-term is UNDISTRIBUTED Predicate-term is DISTRIBUTED
46
What quality & quantity is an A statement?
Affirmative Universal
47
What quality & quantity is an E statement?
Negative Universal
48
What quality & quantity is an I statement?
Affirmative Particular
49
What quality & quantity is an O statement?
Negative Particular
50
What are the types of Universal statements?
Singular, All, and Every
51
What is the chart with the qualities and quantities of all 4 statements called?
Square of Opposition
52
What is a Copula?
are (not)
53
What are the Mental Acts & Verbal Expressions together called?
Acts of the Intellect
54
What is the Subject, Predicate, and Copula of the statement: All elephants are pachyderms.
Subject- Elephants Predicate- pachyderms Copula- are
55
How do you change this sentence into a statement: Elephants love to blow bubbles?
All elephants are animals(pachyderms) who love to blow bubbles.
56
Modus Pollens
P is to Q P therefore Q
57
Modus Tollens
P is to Q ~Q therefore ~P
58
What is Modus Pollens doing?
It is affirming the antecedent
59
What is Modus Tollens doing?
It is denying the consequent
60
Denying the Antecedent
P is to Q ~P therefore ~Q
61
Affirming the Consequent
P is to Q Q therefore P
62
Example of the process of a Contraposition with "All cats are animals."
(obversion) All cats are not non-animals (conversion) All non-animals are not cats (obversion) All non-animals are non-cats <-contraposition
63
Example of the process of an obversion with "Some flowers are not red."
some flowers are not RED some flowers are NOT RED
64
Example 2 of the process of an obversion with "Some flowers are not non-red things."
some flowers are not non-red things some flowers are RED