DEDUCTIVE – Deductive reasoning works from the more general to the more specific. Sometimes this is informally called a "top-down" approach. We might begin with thinking up a theory about our topic of interest. We then narrow that down into more specific hypotheses that we can test. We narrow down even further when we collect observations to address the hypotheses. This ultimately leads us to be able to test the hypotheses with specific data -- a confirmation (or not) of our original theories.
INDUCTIVE - Inductive reasoning works the other way, moving from specific observations to broader generalizations and theories. Informally, we sometimes call this a "bottom up" approach (please note that it's "bottom up" and not "bottoms up" which is the kind of thing the bartender says to customers when he's trying to close for the night!). In inductive reasoning, we begin with specific observations and measures, begin to detect patterns and regularities, formulate some tentative hypotheses that we can explore, and finally end up developing some general conclusions or theories.
SYLLOGISM - In a syllogism the primary premise is a general statement. The primary premise is always universal, and may be positive or negative. The secondary premise may also be universal or particular so that from these premises it is possible to deduce a valid conclusion.
Everything that lives, moves (primary premise)
No mountain moves (secondary premise)
No mountain lives (conclusion)
ENTHYMEME - An enthymeme is a partial syllogism. It is based on the probable rather than positive premises and is based on implicit conjectures that are shared by the speaker and the audience. The speaker gives the primary premise and assumes that the audience will supply the missing knowledge in order to reach the conclusion.
Everything that lives, moves (primary premise)
No mountain lives (conclusion)
CHIASMUS - Repetition of ideas in inverted order. Example: "I had a teacher I liked who used to say good fiction's job was to comfort the disturbed and disturb the comfortable." (David Foster Wallace)
PARALLELISM- Also referred to as parallel construction or parallel structure, this term comes from Greek roots meaning “beside one another.” It refers to the grammatical or rhetorical framing of words, phrases, sentences, or paragraphs to give structural similarity. This can involve, but is not limited to, repetition of a grammatical element such as a preposition or verbal phrase. (Again, the opening of Dickens’ Tale of Two Cities is an example: “It was the best of times, it was the worst of times, it was the age of wisdom, it was the age of foolishness, it was the epoch of believe, it was the epoch of incredulity....”) The effects of parallelism are numerous, but frequently they act as an organizing force to attract the reader’s attention, add emphasis and organization, or simply provide a musical rhythm.
LITOTE- (pronounced almost like “little tee”) – a form of understatement that involves making an affirmative point by denying its opposite. Litote is the opposite of hyperbole. Examples: “Not a bad idea,” “Not many,” “It isn’t very serious. I have this tiny little tumor on the brain” (Salinger, Catcher in the Rye).
PEDANTIC- An adjective that describes words, phrases, or general tone that is overly scholarly, academic, or bookish (language that might be described as “show-offy”; using big words for the sake of using big words).
invective – an emotionally violent, verbal denunciation or attack using strong, abusive language. (For example, in Henry IV, Part I, Prince Hal calls the large character of Falstaff “this sanguine coward, this bedpresser, this horseback breaker, this huge hill of flesh.”)
PERIODIC SENTENCE- Presents the main clause at the end of the sentence, for emphasis. Example: "And though I have the gift of prophecy, and understand all mysteries, and all knowledge; and though I have all faith, so that I could remove mountains, and have not charity, I am nothing."
(The King James Bible, I Corinthians 13)
ZEUGMA- When a word is used with two adjacent words in the same construction, but only makes literal sense with one of them. Example: "He carried a strobe light and the responsibility for the lives of his men."
(Tim O'Brien, The Things They Carried)
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