“The literature is clear in practice — the effect that this had on socialization, pro-social behavior, if you will, and the ability for people to feel connected and have a community,” Dr. Norris said of the pandemic. “Many of the things that would have normally taken place for people, particularly high school young adults, did not take place,” he added. “And that is still occurring.”Jade Song, a 27-year-old novelist, counted herself among those who had become increasingly unhappy in recent years.“It’s mostly because as an adult you suddenly become aware of all the world…