A psychologically plausible analysis of the way we assign illocutionary forces to utterances is formulated using a 'contextualist' analysis of what is said. The account offered makes use of J. L. Austin's distinction between phatic acts (sentence meaning), locutionary acts (contextually determined what is said), illocutionary acts, and perolocutionary acts. In order to avoid the conflation between illocutionary and perlocutionary levels, assertive, directive and commissive illocutionary forces are defined in terms of inferential potential with respect to the common ground. Illocutionary (...) forces are conceived as automatic but optional components of the process of interpretation. (shrink)