Life-Span Development Ninth Edition is McGraw-Hill's mid-level, learning style-focused textbook for the one-semester chronologically organized human development course. This best-selling text is widely adopted for being the most accurate and up to date text available. Included in this new edition are the largest number of 21st century citations of any text on the market, a streamlined chapter organization and Learning Goals driven learning system, and thoroughly integrated coverage of culture, ethnicity and gender.