Hideki Zamma (Kobe City University of Foreign Studies): Accentuation in Rendaku words: Implications for a theory of constraint interaction Although Rendaku (or Sequential Voicing) has been extensively studied in the literature, its relation to accentuation has not. This paper provides distributional facts of such relations, paying particular attention to proper nouns. It will then become clear that there is a correlation between them: words which undergo Rendaku tend to be accentless. The question then arises as to which of these phenomena represents the ultimate source of the other: Is it 'If Rendaku, then accentless', or 'If accentless then Rendaku'? Not surprisingly, there are some exceptions which do not conform to the generalization given above. Investigating these offers us a clue with which we can properly solve the problem in question. At this point, a further question naturally arises: How can this kind of correlation of processes be dealt with in the framework of Optimality Theory? In this paper it is argued that (for better or worse) it cannot be analyzed in OT in a satisfactory way. In a theory which utilizes only hierarchical constraints, it is impossible to ensure that one process can derive another.