Chapter 4 Flashcards
is an error in reasoning that involves the explicit use of an invalid form
formal fallacy
is an error in reasoning that does not involve the explicit use of an invalid form
informal fallacy
involves attacking the person who advances an argument (or asserts a statement) as opposed to providing a rational critique of the argument (or statement) itself
argument against the person (or ad hominem fallacy)
involves an attempt to discredit an argument or view by launching a direct personal attack
abusive ad hominem
involves an attempt to discredit an argument or view by calling attention to the circumstances or situation of those who deviance it
cicumstanstal ad homineum
involves an attempt to discredit an argument or view by suggesting that one’s opponent is hypocritical
tu quoque
occurs when the arguer attacks a misrepresentation of the opponents view
straw man fallacy
occurs when a conclusion is defended by a threat to the well being of those who do not accept it
appeal to force (or ad baculum fallacy)
is an attempt to persuade a person or group by appealing to the desire to be accepted or valued by others
appeal to the people
is the attempt to support a conclusion merely by evoking pity in one’s audience
appeal to pity (or ad misericordiam fallacy)
involves one of the following : either (a) the claim that a statement is true (or may be reasonably believed true) simply because it hasn’t been proven false or (b) the claim that a statement is false (or may be reasonably believed false) simply because it hasn’t been proven true
appeal to ignorance
occurs whenever the premises of an argument are logically unrelated to the conclusion
red herring fallacy (or ignoratio elenchi fallacy)
occurs when multiple meanings of a word (or phrase) are used in context where validity requires a single meaning of that word (or phrase)
fallacy of equivocation
occurs when multiple meanings of a sentence are used in context where (a) validity requires a single meaning and (b) the multiple meanings are due to sentence structure
fallacy of amphiboly
involves either (a) an invalid inference from the nature of the parts to the nature of the whole or (b) an invalid inference from attributes of members of a group to attributes of the group itself
fallacy of composition
involves either (a) invalid inference from the nature of the whole to the nature of the parts or (b) an invalid inference from the nature of a group to the nature of its members
fallacy of division
occurs when an argument assumes the point to be proved
begging the question
occurs when one uses a premise that unjustifiably reduces the number of alternatives to be considered
false dilemma
is an appeal to an authority when the reliability of the authority may be reasonably doubted
appeal to unrealiable authority
occurs when one possible cause of phenomenon is assumed to be a cause although reasons are lacking for excluding other possible causes
false cause fallacy
involves asking a question that illegitimately presupposes some conclusion alluded to in the question
complex question fallacy