The Categorical Syllogism
OBJECTIVES
At the end of this module, you are expected to:
1. Define categorical syllogism
2. Identify the components, standard form, and the figure and mood of categorical syllogism
3. Determine the validity of categorical syllogisms
4. Discuss the residual syllogistic rules
5. Explain the Boolean standpoint
6. Be able to demonstrate the validity of categorical syllogisms by logical analogy
TOPICS
1. Definition of categorical syllogism
2. The components of categorical syllogism
3. The standard form and the figure and mood of categorical syllogism
4. The rules and fallacies involved in categorical syllogism
5. The residual syllogistic rules
6. The Boolean standpoint
7. The fifteen (15) unconditionally valid syllogisms
8. The nine (9) conditionally valid syllogisms
A SYLLOGISM is typically a three-proposition deductive argument—that is, a mediate inference that consists of two premises and a conclusion. In a categorical syllogism,all the propositions used are categorical statements, hence the label ‘categorical.’