Tackling some of the most important ideas in child psychology and human development, Human Resilience presents key theories from Ann and Alan Clarke’s pioneering work in this field. The Clarkes discuss major interacting influences on development, including genetic and environmental effects, chance events and the tendency for people to influence their environments in ways that reinforce their personal characteristics. In particular, they address the controversial issues surrounding the heritability of IQ and outline factors affecting the success of various intervention programs, including fostering and adoption.