Book excerpt: Thus begins market-leading author David Myers’ discussion of developmental psychology in Unit 9 of his new Myers’ Psychology for AP® Second Edition. With an undeniable gift for writing, Dr. Myers will lead your students on a guided tour of psychological science and poignant personal stories. Dr. Myers teaches, illuminates, and inspires. Four years ago, we published this ground-breaking text which is correlated directly to the AP® course. Today, we build on that innovation and proudly introduce the 2nd AP® Edition. Whether you are new to AP® psychology or have many years under your belt, this uniquely AP® book program can help you achieve more.