Abstract
Kala Lagaw Ya is the language of the western and central islands of the Torres Strait. It exhibits an extremely complex pattern of 'split argument coding' ('split ergativity'), which has previously been considered typologically exceptional and problematic for widely discussed universals of argument coding dating back to work by Silverstein, Comrie and Dixon in the 1970s, and framed in terms of an 'animacy' or 'nominal' hierarchy. Furthermore, the two main dialects of the language, which centre around Saibai Island and Mabuiag Island, differ in the detail of their argument coding in interesting ways. In this paper we argue that once we take into account other typologically well-attested principles concerning the effect of markedness on neutralization in the morphological coding of grammatical categories, and in particular recent proposals about the typology of number marking systems, the Kala Lagaw Ya system falls into place as resulting from the unexceptional interaction of a number of universal tendencies. On this view, the case systems of the two dialects of Kala Lagaw Ya, while complex, appear not to be typologically exceptional. This account can be taken as a case study contributing to our understanding of universals of argument coding and how they relate to forces affecting the neutralization of morphological marking. The reframing of the Kala Lagaw Ya facts then has broader implications: it reinforces the value of viewing complex patterns as the result of the interaction of simpler, more regular forces, and in so doing it also lends further empirical weight to the universals of argument coding which Kala Lagaw Ya was previously thought to violate.