Book excerpt: Donald (psychology, Queen's University, Canada) challenges the prevailing view that seeks to explain away human consciousness and presents a theory on the origins of the modern mind. He describes the cultural and neuronal forces that power human modes of awareness, and proposes that the human mind is a hybrid product of the interweaving of the brain with an invisible symbolic web of culture to form a "distributed" cognitive network. Using evidence from brain and behavioral studies of humans and animals, he explains how an expansion of consciousness transcends the limitations of the mammalian mind, and elaborates the foundations of self-evaluation and self-reflection. c. Book News Inc.