When did you become an adult? Was it the day you turned 18, the day you graduated high school, or the day you moved out of your parents’ or caregivers’ home? The authors of your course text, Zastrow et al., use the term young adulthood for ages 18 to 30, and middle adulthood for ages 30 to 65. Are these young and middle adulthood classifications useful? How do they compare to your own unique experience at these life stages? Indeed, your description of what it means to be an adult and how and when an adolescent transitions into adulthood may differ from that of Zastrow et al.—and from your colleagues.