Paula Fikkert (University of Nijmegen, Nijmegen, The Netherlands)

Thomas Lee (Chinese University of Hong Kong and ICS, Hunan University, Hong Kong)

Peter MacNeilage (University of Texas, Austin, USA)

Jacques Vauclair (University of Provence, Aix-en-Provence, France)

Marilyn M. Vihman (University of Wales, Bangor, UK)