LOGIC 1000A: QUIZ #1
Jan. 28, 2004
I) Short Answer (6 pts)
1. Could a sound argument have a false conclusion? Explain.
No. As sound argument is a valid argument with all true premises. Since in a valid
argument it is not possible for the premises the premises to be true and the
conclusion false, the actual truth of premises guarantees the truth of the truth of the
conclusion.
2. Explain the difference between cognitive and emotive meaning.
Terminology that has cognitive meaning conveys information (has the function of
conveying information). Terminology that has emotive meaning expresses or evokes
feelings (has the function of expressing or evoking feelings).
II) Standardization (6 pts)
Standardize each of the following arguments.
3. If Alward were a popular professor, students would react positively when he
enters the room. But they boo him. So, since booing is hardly positive feedback,
Alward must be really unpopular.
P1: If Alward were a popular professor, students would react positively when he
enters the room.
P2: Students boo Alward when he enters the room.
P3: Booing is not positive feedback.
C: Alward must be really unpopular
4. Logic is quite useful. It will help you write better papers, and it will help you win
arguments with your friends. As a result, everyone should take at least one logic
course. Moreover, it’s an easy class to get a good grade in.
P1: Logic will help you write better papers
P2: Logic will help you win arguments with your friends
P3: Logic is quite useful
P4: Logic is an easy class to get a good grade in
C: Everyone should take at least one logic course
III) Argument Diagrams (8 pts)
Using the indicated numbering, diagram the following argument.
5. Since (1) Alward knows Lord of the Rings minutiae, (2) he must be rather uncool.
And (3) Alward is quite unpopular with students because (4) he gives too many
logic quizzes. But since (2) Alward is uncool and (3) unpopular, (5) he will make an
excellent administrator.
(1) (4)


(2) (3)

(5)
6. (1) Professors are pretentious; therefore, since (2) you invited your logic professor
to dinner, (3) your other guests will be bored. And because (2) you invited your
logic professor to dinner, (4) you won’t have time to study for your quiz.
Consequently (5) you won’t have to worry about whether you should have a career
as a logician.
(4)  (2) (1)


(5)
(3)