Rules or Associations in the Acquisition of Morphology? Frequency by Regularity Interaction in Human and PDP Learning of Morphosyntax

Requests for reprints should be addressed to N. Ellis, School of Psychology, University of Wales, Bangor, Gwynedd, Wales, LL57 2DG, UK. We thank Martin Wilson for help with administering the experiment and Gordon Brown and Ernest Lee for useful discussions. This work was assisted by grant R000236099 from the Economic and Social Research Council (UK) to the Žrst author. A preliminary report of some of this data has previously been reported in Ellis, N.C. & Schmidt, R. (1997). Morphology and longer distance dependencies. Studies in Second Language Acquisition, 19, 145–171.