New book iGen reveals the little-known ways smartphones are changing your kids
by Jean M. Twenge Jean M. Twenge has been writing about generational differences for 25 years, producing bestsellers like Generation Me and The Narcissism Epidemic . In her latest book, Twenge zeroes in on iGen, the kids born in 1995 and later who have grown up with smartphones, had an Instagram page before they started high school and do not remember a time before the internet. The average teen checks her phone more than 80 times a day. The oldest iGen-ers, as she calls them, were early adolescents when the iPhone was introduced in 2007 and high school students when the iPad entered the market in 2010. Twenge argues the complete dominance of the smartphone among teens has had ripple effects across every area of iGen-er lives, from their social interactions to their mental health. Twenge draws on national surveys of 11 million Americans, conducted since 1960, to reach her conclusions. From about 2012, she started seeing "large, abrupt shifts in teens' behaviour and emoti...