ABSTRACT
The hierarchical organization fulfills the historical duality of domain-general and domain-specific approaches to intelligence. General intelligence is a prominent construct in all walks of people, and its practical validity is often calculated in terms of its associations with criteria external to it. On a very practical plane, intelligence relates to healthier lifestyle choices and better health management. In short, psychometric intelligence has become established as a significant correlate of health life outcomes, illness, and death. Intelligence might be an ability to adapt to a wide range of circumstances. Insofar as intelligence helps to regulate both self-control and achievement, children with less optimal cognitive skills might, out of frustration, become depressed and withdrawn or aggressive and disruptive. Gender variation is a perennially provocative topic, and the issue of gender differences in abilities in general, and intelligence in particular, remains contentious. The chapter also presents some closing thoughts on the key concepts discussed in the preceding chapters of this book.
