Neuropsychology professor Steven Petersen describes what scientists are finding out about brain development, synaptic growth and wiring, intentional and incidental learning, the role of emotion in learning, and declarative and implicit memory systems. Neuroscience has only the broadest outline of principles to offer today's educators. (MLH)

Archaeology and cultural anthropology show that humans developed many discrete skills (social, technological, natural history, and language intelligence) over the past million years, but only recently have combined these into "broad" intelligence. Understanding learning is a key issue. Metacognition, the ability to consider one's…