| Participant | Institution | Data Type |
| Laetitia Almeida | University of Lisbon | Portuguese |
| Barbara Bernhardt | Univ of British Columbina | Clinical |
| Teresa Cabré | University of Barcelona (UAB) | Catalan |
| Susana Correia | University of Lisbon | Portuguese |
| Teresa da Costa | University of Lisbon | Portuguese |
| Suzanne Curtin | University of Pittsburgh | Spanish |
| Barbara Davis | University of Texas | Babbling, Clinical Crosslinguistic |
| Katherine Demuth | Brown University | Sesotho, French, English |
| Grzegorz Dogil | University of Stuttgart | German |
| Paula Fikkert | University of Nijmegen | Dutch |
| Maria João Freitas | University of Lisbon | Portuguese |
| Heather Goad | McGill University | English, French |
| Mark Johnson | Brown University | Sesotho, French, English |
| Sophie Kern | University of Lyon 2 | Crosslinguistic |
| Manuel Kountz | University of Stuttgart | German |
| Marie-Thérèse LeNormand | CNRS | Clinical, French |
| Claartje Levelt | Leiden University | Dutch |
| Britta Lintfert | University of Stuttgart | German |
| Brian MacWhinney | Carnegie Mellon | CHILDES |
| Bernd Moebius | University of Stuttgart | German |
| Aubrey Nunes | University of Durham | English |
| Mits Ota | University of Edinburgh | Japanese |
| Brigit van der Pas | University of Utrecht | Dutch |
| Joe Pater | Univ. Mass. at Amherst | English |
| Pilar Prieto | University of Barcelona (UAB) | Catalan |
| Nan Ratner | University of Maryland | Clinical, Disfluency |
| Yvan Rose | Memorial Univ Newfoundland | French, English |
| Leonor Scliar-Cabral | Florianopolis | Brazilian Portuguese |
| Katrin Schneider | University of Stuttgart | German |
| Miquel Serra | University of Barcelona (UAB) | Catalan |
| Ann Smit | Kansas State University | English (Templin) |
| Joseph Stemberger | Univ of British Columbia | Zapotec |
| Shelley Velleman | Univ Mass Amherst | English |
| Marilyn Vihman | Univ of Wales at Bangor | English |
| Sophie Wauquier-Gravelines | University of Nantes | French |
| Martha Young-Scholten | University of Newcastle | German |
| Tania Zamuner | MPI Nijmegen | German, L2 English, L2 German |