1. accentus: fallacy of ambiguity due to an emphasis on word
or phrase.
2. affirmation of the consequent: an argument from the truth
of a hypothetical statement and the truth of the consequent to
the truth of the antecedent.
3. ambiguity: an argument in the course of which at least one
term is used in different senses. (called equivocation in Browne
& Keeley)
4. amphiboly: ambiguity is of amphibolous nature (having a grammatical
structure that allows of two interpretations.)
5. argumentum ad baculum: argument that resorts to the threat
of force to cause acceptance.
6. argumentum ad hominem: an argument that attempts to disprove
the truth of what is asserted by attacking the asserter or
attempts to prove the truth of what is asserted
by appealing to the opponent's special circumstances. (also called "name
calling" in Browne and Keeley)
7. argumentum ad ignorantiam: an argument that a proposition
is true because it has not been shown to be false, or vice
versa.
8. argumentum ad misericordiam: an argument that appeals to
pity for the sake of getting a conclusion accepted.
9. argumentum ad populum: an argument that appeals to the beliefs
of the multitude.
10. argumentum ad verecundiam: an argument in which an authority
is appealed to on matters outside his field of authority.
(close to Browne & Keeley's "appeal to
authority")
11. begging the question (circular reasoning): an argument that
assumes as part of the premises the conclusion that is
supposed to be proved. (also close to
Browne & Keeley's discussion of "confusing what 'should be' with 'what
is'")
12. composition: an argument in which one assumes that a whole
has a property solely because its various parts have that
property.
13. denial of the antecedent: an argument in which one infers
the falsity of the consequent from the truth of a hypothetical
proposition and the falsity of its antecedent.
14. division: an argument in which one assumes that various
parts have a property solely because the whole has that property. 15. equivocation:
an argument in which an equivocal expression is used in one sense in
one promise and in a different sense in
another premise or in the conclusion.
16. ignoratio elenchi: an argument that is supposed to prove
one proposition but succeeds only in proving a different one.
(close to Browne & Keeley's discussion
of "red herrings")
17. illicit process: a syllogistic argument in which a term
is distributed in the conclusion but not in the premises.
18. many questions: a demand for a simple answer to a complex
question. (Browne & Keeley give more specific names to
this fallacy: "false dilema", "either-or",
"over-simplification", and "dichotomous thinking")
19. non causa pro causa: an argument to reject a proposition
because of the falsity of some other proposition that seems to
be a consequence of the first but really
is not. (Close to what Bowne & Keeley call argument by "extension")
20. non sequitur: an argument in which the conclusion is not
a necessary consequence of the premises.
21. post hoc, ergo propter hoc: an argument from a premise of
the "A preceded B" to a conclusion of the form "A caused B". 22. quaterrnio
terminorum: an argument of the syllogistic form in which there occur
four or more terms.
23. secundum quid: an argument in which a proposition is used
as a premise without attention given to some obvious
condition that would affect the proposition's
application. (Relevant to Browne & Keeley's discussion of identifying
and
evaluating the unstated assumptions
of an argument)
24. undistributed middle: a syllogistic argument in which the
middle term is not distributed in at least one of the premises.