When I was talking last week about the span of generations, we were looking past the ubiquitous Baby Boom to Gen Xers, Millennials and Gen Z. They’re now watching children grow up, kids who are ...

Each generation is defined by its movies. Here are 57 that shaped me. Too young for ‘The Graduate’? Too old for John Hughes? Your cinematic touchstones might be as quirky as mine.

As Twenge puts it: “In many ways, 18-year-olds now look like 14-year-olds in previous generations. For example, only about half of 12th graders date, about the same as eighth graders in the ...