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48 Cards in this Set
- Front
- Back
Deductive arguement |
conclusion follows with certainty or necessity
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Inductive arguement
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the conclusion follows only probably
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Valid
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if it is impossible for the conclusion to be false if the premises are true (DEDUCTIVE)
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Invalid
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if it is possible for the conclusion to be false if the premises are true (DEDUCTIVE)
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Sound
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if it is valid and all of the premises needed to support the conclusion are true (DEDUCTIVE)
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Unsound
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is either invalid or has false premises (DEDUCTIVE)
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Strong
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the premises make the conclusion likely (INDUCTIVE)
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Weak
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the premises do not make the conclusion likely (INDUCTIVE)
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Cogent
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(INDUCTIVE) if a strong argument has true premises
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Uncogent
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weak argument, or a strong argument with false premises (INDUCTIVE)
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Connotation
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characteristics and attributes of all the members of the denoted class
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Denotation
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gives individual members of the denoted class
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Stipulative definition
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assigns a new meaning to a word
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Lexical definition
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the reporting of the different, distinct meanings a word already has in a language, such as would be given by a dictionary definition
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Precising definition
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aims to reduce vagueness |
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Theoretical definition
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assigns a meaning to a word by suggesting a theory that gives a certain characterization to the entities that the term denotes
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Persuasive definition
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this aims to foster approval or disapproval of the Definiendum in the audience.
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Demonstrative definition
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these denote the extension of a term by pointing to the members of the class
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Enumerative definition
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these define a term by naming individual members of the denoted class.
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Defintion by subclass
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these define a term by naming subclasses of the denoted class
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Synonymous definition
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gives a single word that connotes the same attributes as the Definiendum.
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Etymological definition
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gives the meaning of the term by disclosing the word's ancestry in both its own language and other languages
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Operational definition
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gives meaning to a term based on the experimental procedures, which determine whether the word applies to a certain thing
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Definition by genus and difference (species)
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assigns meaning by identifying a genus to which the term belongs, and the difference w/in the genus, which marks off the definiendum from other members of the genus.
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Formal Fallacy
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if there is something wrong with the form (DEDUCTIVE FALLACY'S ONLY)
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Informal Fallacy
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(Inductive fallacy's can ONLY be informal) If the form is not problematic, the fallacy is informal
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Fallacy: Appeal To Force
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the speaker gains the assent of the audience by explicit or implicit threats.
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Fallacy: Appeal To Pity
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the speaker gains the assent of the audience by evoking pity.
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Fallacy: Appeal To The People
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appealing to the audience's desire to be accepted as a member of the group.
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Fallacy: Argument Against The Person
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argumentum ad Homonym: Alleged, Abusive, Circumstantial, Quoque
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Fallacy: Straw Man
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misrepresents the opponents position, giving it a false appearance of weakness
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Fallacy: Accident
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applying a general rule to a case it was not meant to cover
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Fallacy: Missing The Point
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draws a conclusion that is related (but different) to one that might be legitimately derived from the given premises.
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Fallacy: Red Herring
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change the subject to another relevant subject that doesn't support the conclusion given.
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Fallacy Of Weak Induction: appeal to unqualified authority
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Authority lacks credibility, is untrustworthy, has a powerful motive to lie regarding the topic, lack expertise in the area they are talking about, might have a bias that affects his/her judgment.
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Fallacy Of Weak Induction: appeal to ignorance
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if the premises of an argument show only that there is no evidence, or that we know nothing about a certain subject, and the conclusion asserts something definite about that subject, the subject fails.
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Fallacy Of Weak Induction: hasty generalization
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(drawing an inductive conclusion about a whole based on knowledge of some of its parts) is not necessarily fallacious, but if it is done hastily, by taking too small of a sample otherwise not representative of the whole, it can be a fallacy. |
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Fallacy Of Weak Induction: false cause
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depends on the presence of a dubious causal connection --> Mistaking the succession in time for causality, mistaking the effect for the cause, reading causality into mere coincidence, oversimplifying the cause, or misunderstanding probability (gamblers fallacy)
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Fallacy Of Weak Induction: slippery slope
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similar to false cause, this fallacy falsely assumes a series of causal relationships (producing a chain reaction), which is not necessary.
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Fallacy Of Weak Induction: weak analogy
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comparison between two things, which identify some similarity, and argue on this basis for further similarities.
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Begging the question
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presupposing your conclusion, either by leaving unstated a key (but dubious) premise, restating a false premise in the conclusion, or reasoning in a circle
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Complex question
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asks two or more questions while making it seem like only one is asked, such that the answerer is put in a position of having to give one answer to both questions, which may have different answers. |
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false dichotomy
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involves a disjunction (either...or) and only two alternatives, one of which is obviously not the case, though there are many more alternatives possible.
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suppressed evidence
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an argument can appear stronger than it is if it eaves out a crucial piece of evidence, in light of which the other premises would have to be reinterpreted and the conclusion would be false.
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equivocation
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conclusion of an argument depends on an ambiguous use of a certain word
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amphiboly
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when someone takes an ambiguous statement of someone else, and draws a false conclusion as a result of the ambiguity.
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composition |
characteristics that parts of something truly have, and suppose that the whole has the same characteristics
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division |
assumes what is true of a group must be true of each individual member |