An interactive apparatus includes: acquisition means for acquiring profile information in which a topic in a user's speech and the number of predetermined parts of speech of words included in the speech are associated with each other; topic selection means for setting the probability that the topic is selected in such a way that topics whose numbers of predetermined parts of speech are larger are selected with a higher probability from among topics set in the profile information based on the profile information acquired by the acquisition means, and selecting the topic in accordance with the probability of the selection that has been set; and response generation means for generating a response to the user based on the topic that has been selected by the topic selection means.