The field of cognitive psychology has expanded rapidly in recent years, with experts in affective and cognitive neuroscience revealing more about mammalian brain function than ever before. In contrast, psychological problems such as ADHD, autism, anxiety, and depression are on the rise, as are medical conditions such as diabetes, obesity, and autoimmune disorders. Why, in this era of unprecedented scientific self-knowledge, does there seem to be so much uncertainty about what human beings need for optimal development?

Evolution, Early Experience and Human Development asserts that...