Mandler's book offers a powerful new synthesis on the emergence of cognitive capacities in infancy and early childhood. It is a compelling and important treatment of the origins of higher level thought from a cognitive science perspective. I would recommend it highly to anyone interested in cognition or cognitive development. -Frank C. Keil, Professor of Psychology and Linguistics, Yale University The perceptual/conceptual debate about the origins of meaning in the human mind continues to rage in the cognitive sciences, a debate that Mandler confronts head on. A masterful overthrow of a number of entrenched Piagetian assumptions, this eloquently written book about the conceptual capacities of young infants and the roots of language and consciousness is backed by extensive, innovative experimental data. -Annette Karmiloff-Smith, Professor of Neurocognitive Development and Head of Neurocognitive Development Unit, Institute of Child Health, London What are the processes by which the helpless and apparently ignorant infants of our species turn into the knowledgeable two-year olds and twenty-two year olds? Jean Mandler here takes important and novel steps toward a unified answer. She brings together a lifetime of sharp experimentation, acute analysis, and striking insight to provide a scientifically satisfying picture of how babies come to conceptualize the world. For anybody-parents to professors-seriously interested in the origins of human mentality, this volume is required reading. -Lila R. Gleitman, Steven and Marcia Roth Professor of Psychology and Professor of Linguistics, University of Pennsylvania A deep and elegant book on the puzzling problem of how we humans make the leap (if a leap is what it is) from perceiving the world to making conceptual distinctions relating to it. Jean Mandler has the necessary courage and research experience to face up to the issues that have perplexed students of mind for millennia. Her book is not only highly informative but very exciting reading. Bravo! -Jerome S. Bruner, Research Professor of Psychology and Senior Research Fellow in Law, New York University Mandler's book offers a powerful new synthesis on the emergence of cognitive capacities in infancy and early childhood. It is a compelling and important treatment of the origins of higher level thought from a cognitive science perspective. I would recommend it highly to anyone interested in cognition or cognitive development. -Frank C. Keil, Professor of Psychology and Linguistics, Yale University The perceptual/conceptual debate about the origins of meaning in the human mind continues to rage in the cognitive sciences, a debate that Mandler confronts head on. A masterful overthrow of a number of entrenched Piagetian assumptions, this eloquently written book about the conceptual capacities of young infants and the roots of language and consciousness is backed by extensive, innovative experimental data. -Annette Karmiloff-Smith, Professor of Neurocognitive Development and Head of Neurocognitive Development Unit, Institute of Child Health, London What are the processes by which the helpless and apparently ignorant infants of our species turn into the knowledgeable two-year olds and twenty-two year olds? Jean Mandler here takes important and novel steps toward a unified answer. She brings together a lifetime of sharp experimentation, acute analysis, and striking insight to provide a scientifically satisfying picture of how babies come to conceptualize the world. For anybody-parents to professors-seriously interested in the origins of human mentality, this volume is required reading. -Lila R. Gleitman, Steven and Marcia Roth Professor of Psychology and Professor of Linguistics, University of Pennsylvania A deep and elegant book on the puzzling problem of how we humans make the leap (if a leap is what it is) from perceiving the world to making conceptual distinctions relating to it. Jean Mandler has the necessary courage and research experience to face up to the issues that have perplexed students of mind for millennia. Her book is not only highly informative but very exciting reading. Bravo! -Jerome S. Bruner, Research Professor of Psychology and Senior Research Fellow in Law, New York University