Introductory Logic Lesson 12-22

Lesson 12

100

a statement that affirms or denies something about a given subject 

Categorical Statement

200

the term being described, or about which something is being asserted

Subject in a Categorical Statement

300

the term that describes or asserts something about the subject

Predicate in a Categorical Statement

400

the scope of a statement's claim about the extension of the subject: UNIVERSAL or PARTICULAR

Quantity of a Statement

500

the positive or negative nature of a statement's claim about the subject

Quality of a Statement

Lesson 13-17

100

a diagram of the basic relationships between categorical statements with the same subject and predicate

Square of Opposition

200

the relationship between two statements when they ALWAYS have OPPOSITE truth values

Contradiction

300

the relationship between two statements when they CAN both be FALSE, but CANNOT both be TRUE

Contrary

400

the relationship between two statements when they CAN both be TRUE, but CANNOT both be FALSE

Subcontraries

500

the relationship between a universal and particular statement of the SAME QUALITY in which the TRUTH of the UNIVERSAL necessitates the TRUTH of the PARTICULAR

subimplication

Lesson 18-20

100

the statement in an argument which is implied by the premises; the endpoint or terminus of the argument

Conclusion

200

a set of statements, one of which appears to be implied or supported by the others

Argument

300

The statement(s) in an argument

Premise

400

The term found once in each premise but is not in the conclusion at all

Middle Term

500

the relationship between a universal and particular statement OF THE SAME QUALITY in which the FALSITY of the PARTICULAR necessitates the FALSITY of the UNIVERSAL

Superimplication

Lesson 20

100

a deductive argument with 2 premises and 1 conclusion

syllogism

200

The predicate term of the conclusion, used in one premise

Major Term

300

the premise which contains the minor term

Minor Premise

400

The premise which contains the major term

Major Premise

500

a deductive argument consisting of 3 statements in categorical form

Categorical Syllogism

Lesson 20-22

100

The subject term of the conclusion, used in the other premise

Minor Term

200

The mood and figure of the syllogism

Form

300

a 3-letter description of the types of categorical statements a syllogism contains when arranged in standard order

Mood

400

a number from 1 to 4 identifying the placement of the syllogism's middle term (forms a smiley face)

Figure

500

a representation of a syllogism having statements in standard order and standard abbreviations of the terms

Schema