Subcontraries, Subalterns and Distribution
Obversion, Conversion, Contraposition
Deductive Inference
Terminological Rules for Categorical Syllogisms
Quantitative Rules for Categorical Syllogisms
100

The Third Law of Opposition has to do with which relationship on the square?

What are subcontraries

The Third Law of Opposition states that subcontraries can both be true, but cannot at the same time both be false.

100
You must do two things to obvert a sentence. what are they?
What is change the quality of the sentence and negate the predicate?
100

In a syllogism which premise should always be put first?

What is the major premise

100

How many rules govern the validity of categorical syllogisms?

What are seven

100

True or False: The Fallacy of Ilicit Process states that: if a term is distributed in the conclusion, then that same term must be distributed in the premises.

TRUE

200
Finish this statement. The subject term is distributed in statements whose quantity is
What is universal
200
Finish this statement. The rule of double negation says that a term which is not negated is equivalent to a term that is
What is negated twice?
200
Name the three terms in a syllogism.
What are major term, minor term, and middle term.
200
Name the fallacy that results in having more than three terms in a syllogism.
What is the Fallacy of Four Terms?
200

Finish the statment. The subject term of an E statement is distributed or undistributed?

What is distributed

300

Finish this statement. In affirmative propositions the predicate term is always

What is undistributed?

300
Finish this sentence. To convert E and I statements you must
What is interchange the subject and the predicate?
300
Finish this statement. In a valid argument, if the antecedent is true,
What is the conclusion must also be true?
300

Name the fallacy that results from using two terms that are spelled and pronounced exactly alike but have entirely different and unrelated meanings.

What is the Fallacy of Equivocation?

300

When the middle term is not distributed in either of the premises, what do we know about this syllogism?

Either:  The syllogism is invalid

 OR 

It has committed the Fallacy of Undistributed Middle


400

Subaltern terms have the same _________ , but different __________.

What is SAME quality, DIFFERENT quantity

400

Partial conversion of the A statement is done by interchanging the subject and predicate and changing what?

What is changing the statement from universal to particular?

400

True or False: the antecedent is contained in the major premise of the syllogism.

False. The antecedent includes BOTH the major and minor premises.

400

Name the term that cannot appear in the conclusion.

What is the middle term?

400

Which fallacy does the following syllogism commit?

All victories are glorious

No defeat is a victory

Therefore, no defeat is glorious

What is the Fallacy of Illicit Major

500

In O statements the predicate term is

What is distributed?

500
Name the three steps involved in the contraposition of A and O statements.
What is obvert, convert, and obvert again.
500

The act by which the mind establishes a connection between the antecedent and the consequent is called what?

What is deductive inference

500

How many rules must a syllogism comply with in order to be considered valid?

What are seven-- all of them!

500

Which fallacy does the following syllogism commit:

All Gorgons have snaky hair

Medusa has snaky hair

Therefore Medusa is a Gorgon

What is the Fallacy of Undistributed Middle

(The middle term must be distributed once)

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