1. An affective model device, comprising: an emotion information storage configured to store at least two of: a first affective component that is based on input specificity and a variation interval; a second affective component comprising a relatively higher input specificity than the first affective component; a third affective component comprising a relatively smaller variation interval than the first affective component; and a fourth affective component comprising a relatively smaller variation interval than the second affective component and a relatively higher input specificity than the third affective component; and a behavior deciding unit configured to decide a behavior of the affective model device based on at least one of: the first affective component, the second affective component, the third affective component, and the fourth affective component.