Spain is not Greece: how metaphors are understood.

Metaphoric expressions are pervasive and powerful communication tools. The present report sheds light on two questions: how do we extract meaning from metaphors and similes, and are these two tropes interchangeable? Existing models propose different mechanisms for metaphor comprehension: comparison, categorization, and a shift from comparison to categorization as metaphors become conventionalized. While the categorization model allows for the possibility that metaphors and similes are not always interchangeable, all the variants of the comparison model assume equivalence of meaning between the two tropes.

Can Florida become like the next Florida? When metaphoric comparisons fail.

Metaphors can be understood in either of two ways: via a comparison process or via a categorization process. What determines which process will be used? According to a recent variant of comparison theory, novel metaphors must be processed as comparisons; only conventional metaphors can be processed as categorizations. We argue that choice of process is determined not by conventionality, but instead by the semantic and referential properties of the metaphor itself.