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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. Found once in each premise






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






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






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






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






6. A statement that reverses the subject and predicate






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






8. Arguments that confuse the issue by pointing to information that is actually irrelevant to the conclusion






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






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






11. An illegimate appeal to authority






12. A vagueness of grammar that disguises or alters meaning






13. An argument that uses both hypothetical and categorical statements






14. A self-contradiction is a statement that is false due to its logical structure






15. Deals directly with the proper modes of reasoning






16. A word is ambiguous if it has more than one possible meaning






17. Two statements are consistent if they can both be true at the same time






18. A three letter description of the types of categorical statements it contains when arranged in stadard order






19. A concept that can be expressed precisely






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






21. Secretly assuming what you are trying to prove






22. The premise containing the major term






23. A hasty generalization






24. Is valid and has true premises






25. The subject of a statement is the term being described - or about which something is asserted






26. The condition - the part following the 'if'






27. A supported statement is a statement whose truth value depends on evidence or information from outside itself






28. Arguments that fail to establish their conclusions because of a weakness in logical structure






29. 'it does not follow'; that an argument is invalid






30. Reasoning with probability from examples or experience to general rules






31. A verbal attack on a person rather than his argument






32. A sentence which is either true or false






33. Is a syllogism of the same form as the original - but with obviously true premises and false conclusion - in order to show the original to be invalid






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






35. Alters the meaning of a statement through changed emphasis






36. An illegitimate appeal to force






37. A popular but invalid (or unhelpful) form of argument






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






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






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






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






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






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






44. The relationship between a universal and particular statement of the same quality - in which the truth of the universal necessitates the truth of the particular






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






46. An illegitimate appeal to a majority






47. A statement that reverses and negates both the subject and predicate of the original






48. Any statement is either true or false






49. A statement cannot be both true and false






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