answer:That’s a question I found myself asking a while ago, after realising myself to be one also. The term is used to describe people born roughly between the years you mention – 1965 being the change point. A generation’s worth of birth, in the ‘boom years’ following WW2. I was surprised, having first found the definition in a British article in Psychologies Magazine, link here. This is a populist, psychobabbly sort of article, but it does define in an accessible way. I was fairly surprised to find all this, realising that it does explain some interesting social cycles, even the one we are now in. I’m a ‘boomer’, born in 1959. The ‘cycle of archetypes’ mentioned makes sense to me. We are in a period now which closely echoes the early part of the 20th Century, with depression, decadence, political unrest. My personal hope is that the relatively romantic, optimistic wisdom gleaned by us Boomers will be enough to stave off major international violence. If we use Strauss and Howe’s definitions*, or see the cycles about to repeat, then all Hell is going to break loose in the next 20 years. *Book: The Fourth Turning: an American Prophecy # ISBN-10: 0767900464 # ISBN-13: 978–0767900461