Busy. Please wait.
Log in with Clever

show password
Forgot Password?

Don't have an account?  Sign up 
Sign up using Clever

Username is available taken
show password

Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.
Your email address is only used to allow you to reset your password. See our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
Didn't know it?
click below
Knew it?
click below
Don't know
Remaining cards (0)
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

Introductory Logic


formal logic deals with the proper modes of reasoning
informal logic deals with operations of thinking that are indirectly related to reasoning
logic the science and art of reasoning well
induction reasoning with probability from examples or experience to general rules
deduction reasoning with certainty from premises to conclusions
Law of Identity If a statement is true, then it is true.
Law of Noncontradiction A statement cannot be both true and false.
Law of Excluded Middle Any statement is either true or false.
ambiguous has more than one definition, more than one possible meaning
vague extent is unclear
relationships one term has this with another term, is shown when defined properly
persuasive definition definition to influence attitudes and emotions of an audience
theoretical definition defines a concepts in scientific or philosophical terms, alludes to a theory about the term
precising definition not found in a dictionary; situational; seeks to make more precise what was previously vague or fuzzy (Rylee's sandwich)
stipulative definition when a new word is invented or an existing word is applied in a new way (emoji)
term a concept that is expressed precisely in words
definition a statement that gives the meaning of a term
lexical definition shows relationships or reduces ambiguity by providing a single, established meaning of a term; the one in the dictionary
species more specific, narrow, or concrete than the original term and is included by it
genus more general, broad, or abstract than the original term and includes it
mutually exclusive groups that do not overlap
exhaustive no other types exist
intension specific; sum of all the common attributes denoted (or represented) by the term
extension broad; sum of all the individual objects described by the term
statement a sentence that is either true or false
self-supporting statement a statement whose truth value can be determined from the statement itself
tautology a statement that is always true by logical structure
self-contradiction a statement that is false by logical structure
supported statement a statement whose truth value depends on evidence or information from outside itself
consistent when two statements can be true at the same time
implication when the truth of one statement requires the truth of the other
logically equivalent when two statements imply one another
independence when the truth or falsity of one statement has no effect on the truth or falsity of the other
real disagreement an actual inconsistency between two statements; they cannot both be true at the same time
apparent disagreement a difference of opinion or perception
verbal disagreement a misunderstanding due to differing definitions for one or more words
Created by: MrsHough



Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!
"Know" box contains:
Time elapsed:
restart all cards