General Introduction. Introduction (C.-A. Hauert). Infancy (0-2 years) - Recent Approaches. Early cognitive development: Basic functions (J. Langer). Early cognitive development: Notions of objects, space, and causality in infancy (B.E. McKenzie). Early perceptuo-motor development: Posture and locomotion (F. Jouen, J.-C. Lepecq). Perceptuo-motor coordination in infancy (J.J. Lockman). Early neuropsychological development: Lateralization of functions - hemispheric specialization (G. Young). Development in infancy: A quarter century of empirical and theoretical progress (G. Butterworth). Childhood and Adolescence - Recent Approaches. Child cognitive development: The role of central conceptual structures in the development of scientific and social thought (R. Case, S. Griffin). Child cognitive development: Object, space, time, logico-mathematical concepts (J. Crepault, A. Nguyen-Xuan). Child perceptuo-motor development: Normal and abnormal development of skilled behaviour (J.I. Laszlo). Perceptuo-motor development in the child and the adolescent: Perceptuo-motor coordination. (P.G. Zanone). Neuropsychological development in the child and the adolescent: Functional maturation of the central nervous system (D.S. O'Leary). Child neuropsychological development: Lateralization of function - hemispheric specialization (O. Koenig). Cognitive development: Enrichment or impoverishment? How to conciliate psychological models of development (P. Mounoud). Conclusion. Developmental Psychology: A Brief Inventory of Fixtures (C.-A. Hauert). Indexes.