Abstract
This study deals with two syntactic alternation patterns found in two languages of Nepal: differential object marking (DOM) in Nepali (Indo-European > Indo-Aryan) and differential object indexing (DOI) linked to differential agent marking in Chintang (Tibeto-Burman > Kiranti). The aim of the study is to conduct in-depth analyses of these two phenomena based on corpus annotations and including necessary methodological innovations, as well as to compare them in order to reach conclusions about alternations conditioned by properties of objects in general. The investigation of Nepali DOM showed that while this phenomenon is formally simple, it is functionally highly complex. It is conditioned by a plethora of properties of the object, many of which had not been noticed before, such as animacy, specificity, quantifiability, topicality, part of speech, focus, affectedness, and role ambiguity. A rule-based approach can neither cover the full range of variation found in this area in natural language nor can it model DOM in a conceptually sound way. For these reasons, a probabilistic analysis was conducted in the form of logistic regression and shown to be superior to the rule-based analysis. By contrast, Chintang DOI turned out to be functionally simple in being basically conditioned by a single factor (specificity) but to be formally intertwined in complex ways with many other areas of morphosyntax such as valency classes, non-finite clauses, raising, and marking of aspect. In addition, it could be shown that quantifiability is a pre-condition for specificity and that these two properties interact in various ways in Chintang. Most of the differences between Nepali DOM and Chintang DOI can be traced back to fundamental differences between case marking and agreement. The general picture emerging is that the main function of DOM is to mark objects with unusual properties, whereas DOI marks objects that are easy to track in discourse.
Schikowski, Robert