How likely are stem errors when accessing plurals

Abstract

How plural forms are represented has been hotly debated for decades. Is it the case that regular plurals are stored as a full word form representation separate to their singulars (e.g., cat vs cats), or are plurals stored as a stem with a separate plural marker (e.g., cat vs cat-)? We will use evidence from errors in aphasic word form retrieval to explore if plurals are stored decomposed.