The contributions to this volume by H.W. Dechert, A.K. Fathman, F. Grosjean, D.C. O'Connell, M. Raupach, K. Sajavaara/J. Lehtonen, H.W. Seliger and R. Wiese all deal with speech data from native speakers of different languages, or native speakers and language learners of the same language, or speakers in their native and their second languages. They are the results of various methodological attempts to assess speech using a cross-linguistic approach and represent an area of research which may be called "Contrastive Psycholinguistics".