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. 2008 Dec 20;33(6):633–644. doi: 10.1007/s10608-008-9220-z

Table 2.

Examples of neutral syllogism, varying in reality value and logical validity

Logical status True Untrue
Valid An elephant is bigger than a dog A mouse is bigger than a dog
A dog is bigger than a mouse A dog is bigger than an elephant
An elephant is bigger than a mouse A mouse is bigger than an elephant
Invalid A mouse is bigger than a dog An elephant is bigger than a dog
A dog is bigger than an elephant A dog is bigger than a mouse
An elephant is bigger than a mouse A mouse is bigger than an elephant