What was this chapter about?
Figure of Syllogisms
What is this chapter about?
The Mood.
Can a positive conclusion be derived from two negative premises?
Qualitative rule: No
No people are dogs,
Nero is a dog,
Therefore, Nero is not a people
S,P,M?
What does figure mean?
Disposition of terms in the premises.
What is the Latin Term for the first figure?
Sub-Prea
Can syllogisms of the same mood be in different figures?
Yes
Name the two Qualitative rules.
1. If the premises are affirmative, then the conclusion must be affirmative.
2. If the premises are negative, then the conclusion must also be negative.
All Mammals nurse young,
Dogs are mammals,
Therefore, dogs nurse young.
S,P,M? & What figure?
Dogs, Young, Mammals
First figure.
What is disposition?
It means location.
The middle term can only appear where?
In the premises, not the conclusion.
How many differing moods are there?
64
Name two terminological rules.
2. The middle term must not be in the conclusion.
All that glisters is not Gold,
All My gold I've Told,
Therefore, I've told Glistering.
S,P,M? & Figure?
Glisters, Told, Gold
First Figure
What does mood mean?
Mood is the disposition of the premise according to quantity and quality.
What is an A statement?
All S is P
Of the moods how many are valid?
19
Name two Quantitative Rules.
1. If the term is distributed in the conclusion, then it must be distributed in the premises.
2. The middle term has to be distributed a least once.
All fools are annoying,
Some chatterboxes are not annoying,
Therefore, Some chatterboxes are not fools.
Figure? & Mood? & Latin mnemonic?
Second figure
AO Mood
Latin: Baroco
Name the five most common categorical syllogisms.
(Latin Mnemonic)
Barbara, Celarent, Cesare, Camestres, Camenes.
Which figure has the middle term as the subject of the first and second premises?
Third figure, Sub-Sub
What is the difference between a Barbara and a Celarent mood?
The Barbara statement is an AAA statement while the Celarent is an EAE statement.
What are the two invalid whole moods?
EE & OO
If I am better than you,
Which I am,
Then I am greater than you.
Figure? Mood? Latin mnemonic?
First figure
AA
Barbara
What are the four figures a syllogism can be in?
Sub-prea, prea-prea, sub-sub, and prea-sub