Abstract
Four picture naming experiments addressing the production of regular and irregular pasttense forms in Dutch are reported. Effects of inflectional entropy as well as effects of the frequency of the past-tense inflected form across regulars and irregulars support models with a redundant lexicon while challenging the dual mechanism model (Pinker, 1997). The evidence supports the hypothesis of Stemberger (2004) and the general approach of Word and Paradigm morphology (Blevins, 2003) according to which inflected forms are not derived from the present-tense stem, but accessed independently.