ABSTRACT
In this concluding chapter we summarize our theory advanced in this book and relate it to other cognitive, psychometric, and developmental theories. We also highlight how our theory resolves some old debates better than previous theories. These include the differentiation and integration of cognitive processes with development; the changes in the nature of general intelligence along differentiation/integration cycles; the decreasing likelihood of attaining later stages which demonstrates the developmental dimension of the normal distribution of IQ; social phenomena such as the secular increases of intelligence over the twentieth century; and the generalizability and transfer of learning from one process to the other.
