Since the 1970s, Derber has been interested in how people behave and compete for attention in social settings. By recording and transcribing more than a hundred informal dinner conversations, he identified two kinds of responses. More common was the shift response, which directs attention away from the speaker and toward the respondent. Less common, and Disraeli’s forte, was the support response, which encourages elaboration from the speaker to help the respondent gain greater understanding.