Silvia Donati is a researcher at the Albertus Magnus Institut in Bonn. She is currently working on the critical edition of Albert the Great's corpus on the Parva Naturalia. Her research focuses on the 13th and early 14th century reception on Aristotle's Libri naturales. Her most recent publications include: Tra psicologia e filosofia della natura: la teoria delle species nella discussione sulla causalità naturale (Commenti inglesi ai Libri naturales, 1240-1300 ca.), in DSTFM 26 (2015); Is Celestial Motion a Natural Motion? Averroes' Position and its Reception in the Thirteenth and Early Fourteenth Century Commentary Tradition of the Physics, in P. Bakker ed., Averroes' Natural Philosophy and its Reception in the Latin West (Leuven University Press 2015). Cecilia Trifogli gained BA ('Laurea') in Philosophy in 1986, and BA in Mathematics in 1995, both from the University of Pisa. This was followed by a PhD in Mathematics from the University of Milan in 2001. Since October 1999, she has been a university lecturer in medieval philosophy at the University of Oxford, and became Professor of Medieval Philosophy in October 2008. She specializes in the reception of Aristotle's philosophy (especially natural philosophy and philosophy of mind) in the 13th and 14th centuries. E. Jennifer Ashworth read history at Girton College, Cambridge and then received a PhD in philosophy from Bryn Mawr College in the United States. Her teaching career was spent in Canada, first at the University of Manitoba from 1964 to 1969, and then at the University of Waterloo in Ontario from 1969 to 2005. She is a specialist in late medieval and Renaissance logic and semantics.