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Drawing Affirmative Conclusion

Go Jan 01, 1970 The conclusion of a standard form categorical syllogism is affirmative, but at least one of the premises is negative.

Exclusive Premises

Go Jan 01, 1970 A standard form categorical syllogism has two negative premises (a negative premise is any premise of the form 'No S are P' or 'Some S is not P').

Subverted Support

Go Jan 01, 1970 The phenomenon being explained doesn't exist.

Go Jan 01, 1970 The following list surveys major texts in logic and critical reasoning. Although not a complete guide (could there be sucha thing?) it should provide a good starting point. Although historical material is present, I have restricted selections to books published in this century.

Wrong Direction

Go Jan 01, 1970 The relation between cause and effect is reversed.

Illicit Major

Go Jan 01, 1970 The predicate term of the conclusion refers to all members of that category, but the same term in the premises refers only to some members of that category.

Undistributed Middle

Go Jan 01, 1970 The middle term in the premises of a standard form categorical syllogism never refers to all of the members of the category it describes.

Conflicting Conditions

Go Jan 01, 1970 The definition is self-contradictory.

Four Terms

Go Jan 01, 1970 The fallacy is committed when a standard form categorical syllogism contains four terms.

Amphiboly

Go Jan 01, 1970 An amphiboly occurs when the construction of a sentence allows it to have two different meanings.

Consider all. Test All. Hold on to the good.