This volume is based upon a conference which brought together a group of leading developmental researchers to assess state-of-the-art methodology for measuring audition and vision during the first year of life. The volume is primarily aimed at providing an overview of current methods used to assess hearing and vision. Both behavioral and physiological approaches are examined in detail with a view toward providing the reader with a critical undertanding of the methods, including their strengths and weaknesses. It is essential reading for those interested in the development of sensory systems.

This work is intended to portray the interrelationship of heredity, individual development, and the evolution of species in a way that can be understood by nonspecialists. In striving to offer a straightforward historical exposition of the complex topic of nature and nurture, the author tells the story through a central cast of characters beginning with Lamarck in 1809 and ending with a synthesis of his own that depicts how extragenetic behavioral changes in individual development could be the first stages in the pathway leading to evolutionary change. On the way to that goal, he describes relevant conceptual aspects of genetics, embryological development, and evolutionary biology in a nontechnical and accurate way for students and colleagues in the behavioral and social sciences. The book presents a highly selected review as a prelude to the description of a developmental theory of the phenotype in which behavioral change leads eventually to evolutionary change. This book grew out of an invited interdisciplinary course of lectures for advanced undergraduate and graduate students at the University of Colorado, Boulder. Presenting the various ways about thinking about heredity, individual development, and evolution, the author had three goals in mind: *to establish the relevance of individual development to the evolution of species; *to describe the most appropriate way to think about or conceptualize heredity in relation to individual development; *to show that this somewhat unorthodox manner of conceptualizing heredity and individual development gives rise to a new way to think about the behavioral pathway leading to evolution. In conclusion, the present work will provide a contribution toward the possible dissolution of the nature-nurture dichotomy, as well as a contribution to evolutionary theory.

This work is intended to portray the interrelationship of heredity, individual development, and the evolution of species in a way that can be understood by nonspecialists. In striving to offer a straightforward historical exposition of the complex topic of nature and nurture, the author tells the story through a central cast of characters beginning with Lamarck in 1809 and ending with a synthesis of his own that depicts how extragenetic behavioral changes in individual development could be the first stages in the pathway leading to evolutionary change. On the way to that goal, he describes relevant conceptual aspects of genetics, embryological development, and evolutionary biology in a nontechnical and accurate way for students and colleagues in the behavioral and social sciences. The book presents a highly selected review as a prelude to the description of a developmental theory of the phenotype in which behavioral change leads eventually to evolutionary change.
This book grew out of an invited interdisciplinary course of lectures for advanced undergraduate and graduate students at the University of Colorado, Boulder. Presenting the various ways about thinking about heredity, individual development, and evolution, the author had three goals in mind:
*to establish the relevance of individual development to the evolution of species;
*to describe the most appropriate way to think about or conceptualize heredity in relation to individual development;
*to show that this somewhat unorthodox manner of conceptualizing heredity and individual development gives rise to a new way to think about the behavioral pathway leading to evolution.
In conclusion, the present work will provide a contribution toward the possible dissolution of the nature-nurture dichotomy, as well as a contribution to evolutionary theory.

This volume provides a primarily nontechnical summary of experimental and theoretical work conducted over the course of 35 years which resulted in a developmental framework capable of integrating causal influences at the genetic, neural, behavioral, and ecological levels of analysis. It describes novel solutions to the nature-nurture problem at both the empirical and theoretical levels. Following field observations, laboratory experiments led to the discovery of the nonobvious prenatal experiential basis of instinctive behavior in two species--ground-nesting mallard ducklings and hole-nesting wood ducklings. This work also describes the experiences that lead to the rigid canalization of behavioral development as well as the social and sensory experiences that favor the continuance of flexibility. The author also describes in detail a developmental psychobiological systems view that supports a behaviorally and psychologically mediated pathway to evolutionary change in humans and other species. Written in a way that is readable to even the nonspecialist, the text is accompanied by numerous photographs that illuminate and add personal meaning to the written words. Readers will be engaged by the emphasis on the human aspect of the scientific enterprise.