Rules
Rules that have to do with the quality of the statements in a syllogism
What are qualitative rules
Definition of Logic
What is "The Science of Right Thinking"
The mental act whose verbal expression is a proposition
What is Judgment
Two statements are contractictory if they differ in both quality and quantity
What is the Rule of Contractiction
The verbal expression of a deductive inference
What is a Syllogism
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Rules that have to do with how terms are arrayed in a syllogism
What are terminological rules
Logic concerned with the content of argumentation
What is Material Logic
Has to do with whether a statement is affirmative or negative
What is Quality
Two contradictory statements cannot both be true at the same time, nor can they both be false at the same time
What is the First Law of Opposition
If the antecedent is true, the consequent must also be true
What is the Essential Law of Argumentation
Rules that have to do with the quantity of the statements in a syllogism
What are quantitative rules
Logic interested in the form or structure of reasoning
What is Formal Logic
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Has to do with whether a proposition is universal or particular
What is Quantity
Two statements are contrary if they are both universal but differ in quality
What is the Rule of Contraries
The act by which the mind established a connection between the antecedent and the consequent
What is Deductive Inference
Rule that says, If the premises are affirmative, the conclusion must also be affirmative
What is Rule VI
When a conclusion follows logically from its premises
What is a Valid Argument
A sentence or statement which expresses truth or falsity
What is a Proposition
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Two contraries cannot both be true at the same time, but can, at the same time both be false
What is the Second Law of Opposition
We commit this when we violate rule III
What is the Fallacy of Illicit Process
Rule that says, No conclusion can follow from two negative premises
What is Rule V
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The three mental acts that make up a logical process
What are Simple Apprehension, Judgment, and Deductive Inference
The three elements of any proposition
What are the Subject-Term, the Predicate-Term, and the Copula
Two statements are both particular statements that differ in quality
What is the Rule of Subcontraries
The two forms of the Fallacy of Illicit Process
What are the Fallacy of Illicit Major and the Fallacy of Illicit Minor
If you break this rule, you commit the Fallacy of Drawing an Affirmative Conclusion from a Negative Premise
What is Rule VII
Signification and Supposition
What are the two properties of the Term
Showing all three elements of a logical proposition clearly
What is Logical Form
Two subcontraries may at the same time be true, but cannot at the same time be false
What is the Third Law of Opposition
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The four principles that are fundamental to all logical though
What are the Principle of Reciprocal Identity, the Principle of Reciprocal Non-Identity, the Dictum de Omni and the Dictum de Nullo