It’s the new reality for parents of kids in their twenties, and everybody is talking about it: Will our child ever leave home, find love, start a career, settle down, act like a grown-up? Dr. Jeffrey Jensen Arnett, who coined the term “emerging adulthood,” is the world’s leading authority on this newly defined developmental stage, from age 18 to 29. His book, “Getting to 30: A parent’s Guide to the Twentysomething Years”, cowritten with writer and parent Elizabeth Fishel, is the parenting guide that says it’s all going to be OK, and demonstrates why the time spent in emerging adulthood—which may look like flailing to parents—actually helps kids become happier, healthier grown-ups. Arnett is a popular and frequent speaker nationwide at organizations devoted to family relations and therapy, parenting, social work, and college counseling and admissions. Dr. Arnett is a research professor in the psychology department at Clark University and the author of Emerging Adulthood, the book that brought attention to this new stage of life. Despite derogatory portrayals of slacker 20-somethings in recent films and TV shows, he says, “It’s a mystery to me that they are seen as . . . lazy and selfish, that they don’t want to grow, when the fact is that they are more likely to be working and going to school at the same time than their parents were at the same age.” In findings of a poll he conducted with emerging adults, he found that they gradually transition away from their parents during this age span, with the majority reporting close relationships with their parents, and they are surprisingly optimistic about their adult lives.