Abstract: In the field of psychology, the researches on happiness have got substantial achievements. However, the researches on unhappiness are quite deficient. The investigation of unhappiness helps psychologists to deeper the happiness studies from a different perspective. Uchida and Kitayama proposed the culture folk models of unhappiness, which contains two dimensions. The immediate hedonic experience on the one hand and the coping action on the other hand constitute the first dimension of unhappiness. The cognitive appraise on the one hand and affections or motivations involved constitute the second dimension of unhappiness. It was also found that there was a cross-culture consistency between the two dimensions. This paper will mainly introduce the conception of the unhappiness, the relationship between happiness and unhappiness and the culture folk models of unhappiness.

Key words: unhappiness, happiness, culture folk models of unhappiness