| Abstract: | The Japanese and Korean dietary styles are the most similar in the world. The dietary changes of two Asian countries, which are concomitant with their economic growth, have also followed a similar course. Exteriorization is progressing in eating habits, which is connected with a change of lifestyle and food consciousness. The environment surrounding consumers is changing, and consumption behaviour is gradually changing too. Generally, human action depends on a subjective judgement and involves uncertainty. The purpose of this paper is to analyse the consumer's eating‐out behaviour from 1976 to 1998 by fuzzy regression, which is able to deal with a vague and uncertain phenomenon, and to show the effect of this method between the two countries. As a result, the fuzzy parameters showed fairly similar trends both in Japan and Korea. The relative price and habit‐formation effect influenced the expenditure of eating‐out directly, whereas income had an indirect influence on eating‐out expenditure. Moreover, Korean consumer behaviour had become much more vague and complicated than that in Japan. |
