An intraverbal is verbal behavior that is under the control of other verbal behavior and is ultimately strengthened by social reinforcement. Intraverbals are considered conversational language because they are responses to the language of another person, which can be fill-ins or wh-questions.n echoic is a verbal operant which occurs in response to the verbal behavior of another person (or to a textual prompt such as a written model). It is the point-to-point (i.e. word for word) imitation of the model.