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CC Intro Logic- 2-5

Introductory Logic by James Nance & Douglas Wilson, 4th ed.

Genus A term that is more general, broad or abstract than the original term and includes it.
Species A term that is more specific, narrow, or concrete than the original term and is included by it.
Formal Logic Deals with proper modes of reasoning.
Informal Logic Operations of thinking that are indirectly related to reasoning.
Extension The sum of all the individual objects described by it.
Intension The sum of all the common attributes denoted by the term.
3 Methods of Defining 1. by Synonym 2. by example, by word or showing 3. by genus and difference.
A good definition must... 1. State essential attributes. 2. Not be circular. 3. Not be too broad or narrow. 4. Not be unclear or figurative. 5. Must be stated positively. 6. Must be same part of speech.
Created by: kirasayler