Explanation of Behavior from the perspective of Biology (Genetics, Hormones, Evolution, etc):
Behave by Sapolsky (amazing book by Sapolsky, who has an extraordinary inter-disciplinary approach to explaining and predicting behavior)
Explanation of Behavior from the perspective of non-linear dynamics:
Explanation of Behavior from the perspective of psychology and sociology:
Explanation of Behavior from the perspective of computational social science:
Books on brands and a general understanding of marketing:
Explanation of Behavior from the perspective of spirituality: