... Notation systems differ from spoken language in important ways . First , they communicate information and ideas in a visual form . Second , they leave a permanent trace and therefore become independent of their creators . Third , unlike ... Perceptual and Cognitive Development illustrates how the developmental approach yields fundamental contributions to our understanding of perception and cognition as a whole. The book discusses how to relate developmental, comparative, and neurological considerations to early learning and development, and it presents fundamental problems in cognition and language, such as the acquisition of a coherent, organized, and shared understanding of concepts and language. Discussions of learning, memory, attention, and problem solving are embedded within specific accounts of the neurological status of developing minds and the nature of knowledge. - Research advances and theoretical reorientations are updated in the Second Edition; the revision focuses more attention on the cognitive and biological s