Rules
This is the least number of times a middle term should be distributed in a valid syllogism.
What is...one?
There are no distributed terms in this type of statement.
What is an... I statement?
When creating a counterexample syllogism, we create this type of conclusion.
What is...False?
Which fallacy breaks rule #4?
What is...the Fallacy of a Negative Premise and an Affirmative Conclusion?
All S is M
No M is P
Therefore, Some S is not P
What is...Valid?
In rule two, we look to this part of a syllogism to determine if the Major and Minor terms need to be distributed in their premises.
What is...the conclusion?
Both terms are distributed in this statement.
What is an...E statement?
If the premises are true and the conclusion is false, the syllogism is considered to be this.
What is...Invalid?
This Fallacy has terms which are distributed in the conclusion but are not distributed in the premises.
What is...the Fallacy of the Illicit Major and Illicit Minor?
Some P is M
All S is M
Therefore, Some S is P
What is...Invalid? (Fallacy: Undistributed Middle)
According to rule three, there should not be
______ ____________ ______________ in a valid syllogism.
What is...two negative premises?
This term is distributed in an A statement.
What is...The subject?
If a syllogism is valid AND the premises are true, it is said to be this.
What is...Sound?
This fallacy breaks rule #5.
What is...The Fallacy of Two Affirmative Premises and a Negative conclusion?
No P are M
All M are S
Therefore, no S are P
What is...Invalid? (Fallacy: Illicit Minor)
Rule 4 states: A valid syllogism cannot have a ___________ ___________ and an _______________ ____________.
What is...a negative premise and an affirmative conclusion?
This term is distributed in an O statement.
What is...The predicate?
These are the two ways to test the validity of a syllogism.
What are...Counterexample and Rules?
This fallacy happens when a syllogism contains two I statements.
What is...the Fallacy of the Undistributed Middle?
All M is P
All S is M
Therefore, Some S is not P
What is...Invalid?
(Fallacies: 2 Affirmative premises with negative conclusion & Illicit Minor)
Rule five states: A valid syllogism cannot have
______ _______________ _____________
and a negative conclusion.
What is...two affirmative premises?
A distributed term refers to ________ members of its category.
What is...All?
This is a syllogism of the same form as the original, but with obviously true premises and an obviously false conclusion, in order to show the original to be invalid.
What is...a counterexample?
This Fallacy shown here:
No fish are mammals.
No fish are snakes.
Therefore no snakes are mammals.
What is...the Fallacy of Two Negative Premises?
Some M is P
Some S is M
Therefore, No S is P
What is...Invalid?
(Fallacies: 2 Affirmative premises with negative conclusion, Illicit Major, Illicit Minor, Undistributed Middle)