Quiz #1 Flashcards
Critical thinking
Using various techniques of logic in order to determine whether or not we ought to believe the various things we read or ppl tell us
Logic
The discipline that evaluates arguments
Consists of methods for determining whether arguments are good or bad
Argument
Group of statements/ propositions, one or more of which —the premises— are claimed to provide support for one of the others - the conclusion
Premises
Statements/ propositions that present reasons or evidence
Conclusion
The statement or proposition the evidence is claimed to support
Statements
Sentences used to make claims about how things are (true or false)
Examples of non statements
Questions
Promises
Commands
Types of arguments
Deductive argument
Inductive argument
Deductive argument
Incorporate the claim that its impossible for the conclusion to be false given the premises are true
Inductive argument
Incorporate the claim that’s it’s IMPROBABLE for the conclusion to be false given the premises are true
Identifying arguments criteria
Presence of indicator technology
The actual strength of inferential connection
Indicator terminology deductive
Necessarily. Certainly. Absolutely. Definitely
Indicator terminology inductive
Probable. Improbable. Plausible. Implausible. Likely. Unlikely
Inferential connections deductive
Conclusion in fact follows with strict necessity from the premises
Ex. Dogs are mammals. All mammals are animals. Therefore all dogs are animals
Inductive inferential connections
Conclusion in fact follows probably from the premises
Evaluating deductive arguments
Validity
Soundness
Validity
Deductive argument is valid if and only if it’s not possible for the premises to be true and the conclusion false
Soundness
Argument is sound in the case
i) valid
ii) has all true premises
Evaluating inductive arguments
Strength
Cogency
Strength
It’s improbable the conclusion is false given the premises are true
Cogency
Cogent if….
Cogent if
i) strong
ii) has all true premises
A passage contains an argument only if
- Contains at least one premises and a conclusion
- Includes an inferential claim to the effect that the premises provide reasons or evidence for the conclusion
Evidence for an inferential claim includes
Indicator terminology
Inferential relations
Controversial conclusions
Inferential relations
1 or more of the statements in fact provide adequate reasons or evidence for one of the others
Non arguments
Unstructured passages
Structured passages
Unstructured passages
- Statement of belief
- Loosely associated statements
- Report
- Conditional statements
Structured passages
- Expository passage
- Illustrative passage
- Explanatory passage
Statement of belief
Conveys the speakers opinions about something
Loosely associated statements
A collection of statements on the same general subject
Report
A group of statements that convey information about some topic or event
Conditional statement
A statement in the form of “if…. Then….”