[A review of metaphor research].

The study of the metaphor is interdisciplinary and focuses mostly on three points in cognitive psychology: (a) the cognition of metaphoricity, (b) metaphor comprehension processes, and (c) the reason why one concept is represented by another concept as a metaphor. This article reviews the history of research on the metaphor from these three perspectives. Most recent studies support the following viewpoints. Metaphor comprehension is as quick and automatic as literal comprehension. Metaphor comprehension entails the processes of comparison and abstraction. The reason why one concept is compared with another concept is strongly related with the motivation process of combination between different concepts such as embodied cognition.