The Evolutionary Neuroethology of Paul MacLean: Convergences and Frontiers (Human Evolution, Behavior, and Intelligence) edited by Gerald Cory and Russell Gardner: “In the mid-20th century, integrative efforts began concerning the brain and its

social and humanistic functions. These efforts were led by Paul D. MacLean’s

integrative research and thought. As the century ended, however, such efforts

were lost in the surge of new effort in brain and genome research. Nobel Prizes

were awarded on biochemical and cellular findings relevant to psychiatry.

Findings on these levels seemed to provide ultimate answers… This text extends MacLean’s findings and integrative theory.” amazon.com