Test your basic knowledge |

Introductory Logic Vocab

Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. A popular but invalid (or unhelpful) form of argument






2. Making an argument based on a false dilemma






3. Two statements are logically equivalent if they imply one another






4. An illegitimate appeal to force






5. Two statements are in contradiction if and only if they always have opposite truth values






6. Any statement is either true or false






7. Difference of opinion or perception






8. Contains the minor term






9. Improperly assuming that a sequence in time implies a cause and effect






10. The conclusion of an argument is the statement which appears to be implied by the other statements in the argument - which are called premises






11. A word - often a relative pronoun or adverb - that refers to a broad range of things or times






12. The result of the condition - the part after the 'then'






13. Words that set boundaries - referring only to a limited class of things






14. The premise containing the major term






15. An argument based merely on the passage of time






16. A statement cannot be both true and false






17. Two statements are related by implication if the truth of one requires the truth of the other






18. A statement of the opposite quality with a negated predicate






19. The extention of a term is the sum of all the individual objects described by it






20. Two statements are subcontraries if and only if both can be true but both cannot be false






21. A genus of a term is a term that is more general - broad - or abstract than the original term and includes it






22. Deductive argument consisting of three statements in categorical form that together use only three terms - called the major - minor - and middle






23. Found once in each premise






24. Alters the meaning of a statement through changed emphasis






25. A number from 1 to 4 identifying the placement of its middle term






26. Changing the definition of a term in the middle of an argument






27. A diagram of the basic relationships between statements with the same subject and predicate






28. If a statement is true - then it is true






29. A term that - within a statement - refers to all members of its class






30. The subject of the conclusion and is used in the other premise






31. A sentence which is either true or false






32. A syllogism is valid if and only if the conclusion is necessarily true given that the premises are true






33. When there appears to be inconsistency - we have a disagreement






34. Arguments that confuse the real issue with multiple - vague - or otherwise unclear meanings






35. An argument in which a statement is unstated and assumed. Specifically - it is a syllogism with one assumed statement






36. A statement that affirms an outcome based on a condition.






37. An illegimate appeal to authority






38. The sum of all the common attributes denoted by the term






39. A tautology is a statement which is always true because of its logical structure






40. Points to an inconsistency between a person's argument and behavior






41. The quantity of a statement is the scope of its claim about the extension of the subject: universal (entire extension) or particular (partial)






42. The fallacy of transferring attributes from part to whole






43. A verbal disagreement is a misunderstanding due to differing definitions to differing definitions for one or more words






44. A vagueness of grammar that disguises or alters meaning






45. A set of statements - one of which appears to be implied or supported by the others






46. Two statements are contrary if and only if they can both be false but cannot both be true






47. An argument from lack of evidence






48. A self-supporting statement is a statement whose truth value can be determined from the statement itself






49. Secretly assuming what you are trying to prove






50. A statement which can be inferred directly from another statement