Mapping theory, which adds a level of morphosyntactic argument structu
re to the theory of relational grammar, provides a means for capturing
cross-linguistic generalizations heretofore uncharacterizable in ''cl
assic'' RG. This paper develops a mapping theory treatment of several
voice phenomena - applicatives, antipassives, reflexives, and passives
- with special reference to data from Halkomelem Salish. The mapping
analysis is shown to be better than the ''classic'' RG analysis in sev
eral respects.