logic-test

At the request of Prof. Stephen Schwartz of Ithaca College I have created this English version of the logic test. Prof. Schwartz contributed most parts of the translation. Feel free to explore the rest of this site. Sorry the rest is only in German.

Consider which of the "conclusions" (C) follow from the given "premises" (P) and which do not.

This test is completly anonymous, no data will be saved. Your answers will be checked and you will receive your result when you click the submit button.

Please try the first round quickly without any help. The goal is to demonstrate that you can easily get confused without some help from a good calculus, unless you are very experienced. This test is based on a paper-version from J.-M. von Petzinger which he used in his logic-tutorials.

1				don't know	Follows	Doesn't follow
	P:		All people born in Ithaca are Americans
	C:		All people born in Ithaca are New Yorkers
2				don't know	Follows	Doesn't follow
	P:		All dogs are animals
			All little are mean
	C:	a.	All mean dogs are little animals
		b.	Some little dogs are not mean animals
		c.	Some mean dogs are not mean animals
		d.	All little dogs are mean animals
		e.	All dogs that aren't mean are animals that aren't little
3				don't know	Follows	Doesn't follow
	P:		All dachshunds are dogs
			All mammals are animals
			Some mammals are not dogs
	C:	a.	All dachshunds are animals
		b.	Some animals are not dachshunds
		c.	All dogs are animals
4				don't know	Follows	Doesn't follow
	P:		Some little dogs are not mean animals
			All dogs are animals
	C:	a.	Some dogs are mean
		b.	Some little are not animals
		c.	Some animals are not mean
		d.	Some mean dogs are not little animals
		e.	Some mean dogs are little animals
5				don't know	Follows	Doesn't follow
	P:		Some A that are B are not C that are D
			All A are C
	C:	a.	Some A that are D are C that are B
		b.	Some C are not D
		c.	Some B are not C
		d.	Some A are D
6				don't know	Follows	Doesn't follow
	P:		All A are B
			All C are D
			Some C are not B
	C:	a.	All A are D
		b.	Some D are not A
		c.	All A are C
7				don't know	Follows	Doesn't follow
	P:		All A are B
			All C are D
	C:	a.	All A that are not D are B that are not C
		b.	All A that are C are B that are D
		c.	Some A that are D are B that are C
		d.	Some A that are C are not B that are D
		e.	All A that are D are B that are C