This volume's central concern is grammatical voice, traditionally known as diathesis, and its classical manifestations as Active, Middle, and Passive. Various perspectives are represented: the typological-universal view, voice and language acquisition, the relationship between voice and ergativity, diachronic perspectives, and the interaction of morphology and discourse. Contributions by: M. Arce-Arenales; M. Axelrod and B. A. Fox; E. Bakker; A. Cooreman; W. Croft; T. Givsn and L. Yang; M. Haspelmath; S. Kemmer; C. N. Li and S. A. Thompson; M. Mithun; M. Noonan; D. Payne; D. I. Slobin.