To see “56 Up” is to be reunited with an old friend. Make that 13 old friends, together again for a documentary project the likes of which the world has never seen.

Movie review

4 1/2 (out of five stars)

Director: Michael Apted, Paul Almond

Cast: Michael Apted, Bruce Balden, Jacqueline Bassett, Symon Basterfield, Andrew Brackfield, John Brisby, Peter Davies, Suzanne Dewey, Charles Furneaux, Nicholas Hitchon, Neil Hughes, Lynn Johnson, Paul Kligerman, Susan Sullivan, Tony Walker

Rated: Not rated

Running time: 2 hours, 24 minutes

It all started in 1964, when Britain’s Granada TV gathered 7-year-old schoolchildren from divergent economic backgrounds and asked them to talk about their dreams, ambitions, and fears for the future.

That 40-minute program went so well that future director Michael Apted (“Coal Miner’s Daughter,” “Gorillas in the Mist”), who was a researcher on the original show, came back to interview everyone seven years later to see what the passage of time had done to their thinking. He’s been back every seven years since, making for a remarkable string of documentary features that add up to a matchless portrait of our time.

One idea behind the original “Seven Up,” inspired by the Jesuit notion of “Give me the child until he is seven and I will give you the man,” was to see whether England was still in the grip of a Dickensian class system that doomed the children of the poor to inferior lives.

One message of “56 Up” and in fact the entire series is that personality and resilience trump economic station as a predictor of happiness (though obviously not material comfort). As one of the group says, “Life is not there to be regretted, life is there to be lived.”

Apted also has been the interviewer on all the documentaries, and that continuity has been invaluable in encouraging from-the-heart candor from the participants. They speak to him as if they were talking to an old friend.

More than previous episodes, “56 Up” deals with the annoyance interviewees feel about how the world has reacted to their stories. Several felt irked that viewers tend to think they know all about them when they really don’t, and in point of fact three of the original 14 were irritated enough to leave the series at one time or another, with only one still absent.

Peter, who is newly returned after a 28-year absence, is candid that he is returning now because he is happier and because he wants to publicize Good Intentions, the band he is now in.

Nei has had perhaps the most unconventional life path of any of the group. He was a homeless wanderer in the Scottish Highlands at 28. But for the past seven years he’s been living in Cumbre in Northwest England and serving with distinction in local government. You never know.

Perhaps the most resilient of “56 Up’s” participants are a trio of women — Sue, Lynn and Jackie — who were best friends growing up in London’s lower-class East End and have weathered all manner of difficulties with enviable unflappability.