ABSTRACT
This conclusion presents some closing thoughts on the concepts discussed in the preceding chapters of this book. The book the developmental system framework has profound implications for a new set of public policy and social program options for people across the life span. It discussed in Lerner, these implications derive from the lifelong plasticity of the human development system, promote an optimistic stance in regard to the ability of interventions to enhance the life courses of all individuals, and emphasize the value of sound justice, democracy, and equity to best capitalize on the potential for healthy and positive development in each person. The book contrast to policies based on a dualistic concept of nature versus nurture, policies based on an understanding of the dynamic, intimate relationship between the genetic expression and the environment will lead to programs that enhance the lives of each and every individual, such as those proposed in the Spencer and Harpalani.
