Although in many interface theories, the domains of phrasal phonological processes are defined in terms of prosodic constituents, D’Alessandro and Scheer (2015) argue that their proposed modification of phase theory, Modular PIC, renders prosodic constituents superfluous. Phrasal phonological domains can instead be defined directly in the syntax. In this response, we argue that Modular PIC does not provide a convincing new approach to the syntax-phonology interface, as it is both too powerful and too restrictive. We show that the analysis offered of raddoppiamento fonosintattico in Eastern Abruzzese does not justify the loss of restrictiveness Modular PIC brings to phase theory. We also show that Modular PIC is too restrictive to account for phenomena, from Bantu languages and others, that have received satisfactory analyses within interface theories that appeal to prosodic constituents. We conclude that Modular PIC does not successfully replace prosodic constituent approaches to the interface.

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