Knowledge about the ways our minds and brains work has
increased dramatically over the past 100 years. Some of this new
knowledge comes from studies of other animals with which we
share aspects of behavior. Other information comes from new
methods of observation and experimental study of human
beings, both as individuals and in groups. Each body of knowledge
has its own methods of inquiry and language to collect
and describe information, and each represents distinct communities
of investigators and theoreticians. Despite this, the different
bodies of knowledge are assumed to be fundamentally
linked. Neurological and psychological function are two sides
of a coin, and different aspects of each are joined in the organic
wholeness of the individual. In this book, I explore links among
several of the major bodies of new knowledge about human
neurological and psychological function. Two things are particularly
striking about these links. First, the links among bodies
of knowledge that heretofore have remained largely separate
are straightforward. Second, important new aspects of human
individual and social behavior become apparent through these
links.