Argument - Answers a group of statements of which one (the conclusion) is claimed to follow
from the others (the premises).
Statement - Answers A sentence that is either true or false.
Premise - Answers The information intended to provide support for a conclusion.
Conclusion - Answers The statement that is claimed to follow from the premises of an
argument.
Logic - Answers The study of reasoning.
Truth value - Answers If a statement is true or false.
Proposition - Answers The meaning of a statement.
Inference - Answers Term used by logicians to refer to the reasoning process that is expresses
by an argument.
Conclusion Indicator - Answers Words or phrases that indicate the presence of a conclusion.
Premise indicator - Answers Words and phrases that help us recognize arguments by indicating
the presence of premises.
Inferential claim - Answers If a passage expresses a reasoning process- that the conclusion
follows from the premises- then we say that it makes an ______________ ___________
Explanation - Answers Provides reasons for why or how an event occurred. Are not arguments
by themselves but can form part of one.
Deductive arguement - Answers Argument in which it is claimed that the conclusion follows
NECESSARILY from the premises. In other words, it is claimed that the premises make it
IMPOSSIBLE for the conclusion to be false.
Inductive arguement - Answers Argument in which it is claimed that the premises make the
conclusion PROBABLE.
Valid deductive arguement - Answers An argument in which, assuming the premises are true, it
is IMPOSSIBLE for the conclusion to be false. In other words, the conclusion follows necessarily
from the premises.
Invalid deductive arguement - Answers An argument in which, assuming the premises are true, it
is POSSIBLE for the conclusion to be false. In other words, the conclusion does not necessarily
follow from the premises.
Counterexample - Answers Evidence that shows the statement is false. Shows the possibility
, that the premises assumed to be true do not make the conclusion necessarily true. Shows that
a deductive argument is invalid.
Strong inductive arguement - Answers Argument such that if the premises are assumed to be
true, then the conclusion is probably true. In other words, if the premises are assumed to be true,
then it is improbable that the conclusion is false.
Weak inductive argument - Answers Argument such that if the premises are assumed to be true,
then the conclusion is not probably true.
Cogent argument - Answers Strong inductive argument with true premises.
Uncogent argument - Answers Inductive argument that is weak and/or has at least one false
premise.
Term - Answers A single word or group of words that can be the subject of a statement; it can
be a common name, a proper name, or even a descriptive phrase.
Intension - Answers The ________ of a term is specified by listing the properties or attributes that
the term connotes- in other words, its sense.
Extension - Answers Class or collection of objects to which the term applies, or what the term
denotes (its reference).
Class - Answers A group of objects.
Empty class - Answers A class that has zero members.
Increasing intension - Answers In a sequence of terms where each term after the first connotes
more attributes than the previous term.
Decreasing intension - Answers In a sequence of terms where each term after the first connotes
fewer attributes that the previous term.
Decreasing intension - Answers In a sequence of terms were each term after the first connotes
fewer attributes than the previous term.
Increasing extension - Answers In a sequence of terms where each term after the first denotes
a set of objects with more members than the previous term.
Definition - Answers Assigns a meaning to a word, phrase, or symbol.
Definiendum - Answers Refers to that which is being defined.
Definiens - Answers Refers to that which does the defining.
Intensional definition - Answers Assigns a meaning to a term by listing the properties or
attributes that are denoted by the term.