This issue contains a new Review Article and Discussion section. The idea is to ask a leading researcher to contribute an article which can either be a review of a field or an extended book review and to then ask for commentaries on the piece by other researchers. In this issue the section consists of a commentary by Michael Tomasello on Adele Goldberg's Constructions: a construction grammar approach to argument structure together with twelve commentaries and a reply. The next of these sections will be an extended review by Matthew Rispoli of Rethinking innateness: a connectionist perspective on development by Jeffrey Elman, Elizabeth Bates, Mark Johnson, Annette Karmiloff-Smith, Domenico Parisis and Kim Plunkett. I very much hope that readers will find the new section an interesting and useful contribution to theoretical and methodological discussion in the field. Of course the success of this venture depends on contributions from a wide range of theoretical perspectives and on people's willingness to make these contributions even where they sharply disagree with the thesis of the review article.