Switch Reference in Morphology
Switch reference is a grammaticalized system for marking continuity or discontinuity of reference between two clauses. It is therefore not surprising that switch reference has received a lot of attention from syntacticians. From the syntactic discussions of switch reference, it has become clear that switch reference is far from a unified phenomenon, as it seems to range between a strictly syntactic system in some languages and a pragmatically driven marker of discourse cohesion in others. Switch reference involves the marking of (dis)continuity, and switch reference markers are more often than not morphological units. This means that, apart from the syntactic side, switch reference has a morphological side as well. The morphology of switch reference has received far less attention than its syntax and semantics. Although there are clear tendencies with respect to the morphological characteristics of switch reference markers (they tend to be inflectional suffixes that take a verb as their host), their characteristics are by no means uniform across languages. Switch reference is not always clearly an inflectional category, nor is it always expressed strictly morphologically, but rather by clitics or phonologically free words. Languages may furthermore have dedicated switch reference marking, but in many cases, switch reference is expressed in combination with other categories sharing the exponent. Paradigms of switch reference markers may show several types of asymmetries, whether to do with markedness, (co-)exponence, or different morphosyntactic behavior. A possible reason for the diversity found in switch reference markers, sometimes within the same language, may be the diverse origins of the markers: they may for instance stem from gapping structures, nonfinite verb morphology, pronouns, deictic elements, conjunction markers, or case markers.