It is possible to perform a structural analysis of similar conversations and define units within particular types of conversations to discover the regularities underlying the considerable variation in natural communication. Convergent communication consisting of an exchange of information in pursuit of a mutually agreed upon goal can be seen as a highly structured type of behavior in which both participants perform according to complex sets of shared rules. Various parts of conversations are defined and a pattern of differences is found between different age groups, indicating that conversation organization is a feature that is acquired along with language development. References are included. (VM)