undyingking: (Default)
undyingking ([personal profile] undyingking) wrote2010-11-16 03:45 pm
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Sib redux

Well, that was quite interesting. I asked a few days ago about birth order among people who read my LJ, and have now got 47 responses, which is probably enough to get on with.
First of all, sibling group sizes:

Only child10
One of two18
One of three15
One of more than three4


Note that these are not 'official' family sizes, but the number of siblings you grew up with: for some people, the two are different. This makes it rather difficult to compare with general family size data, to see whether you lot are odd in that respect. Apparently the mean UK family has about 1.8 children these days, down from 2.0 in 1970 (I guess most of you were born nearer to that date), compared with 2.3 above. But the mean figure I guess ignores the fact that some families surveyed will be as yet incomplete, which doesn't (presumably) apply to this sample. So not really sure what to make of that. (I do have a few people on my flist who are from the same sibling group, but fortunately in no case has more than one of them has answered the poll, which would have made analysis a bit trickier.)

Now the bit I was more interested in: where people are/were in their sibling group.

Elder of two15
Younger of two3


Eldest of three10
Middle of three3
Youngest of three2


Eldest of four or more3
Not eldest1


This is pretty striking I think. A mighty 76% of those of you who aren't only children are the elder/st sibling in your group. And the proportion is fairly similar across the group sizes. I'm no statistician, but it looks significant to me.

I suppose there are several possibilities:
  • this is actually the sort of distribution found in the general population (seems doubtful);
  • or is typical of LiveJournal users generally;
  • (or of some other appropriate generic category of geekdom;)
  • or is typical of the subset of my friends group who are active on LJ and who respond to polls, but that's not necessarily going to apply to my friends group in a more general sense;
  • (etc.)
[livejournal.com profile] celestialweasel pointed out in a comment to the earlier post that there has been observed to be a preponderance of first/only-borns among SF fans, which quite a few of you are. Don't know if that's true of gamers (which even more of you are), but it wouldn't surprise me.

There's also I believe a finding that first/only-borns were in my generation more likely to go to university, which as I did (and met many of you through it) that would obviously skew things. But I haven't been able to locate a link to that result yet.

One possibility I was slightly intrigued by was the psychological one that somehow I unconsciously seek out firstborns to be my friends, to fill some particular social role vis-a-vis me.  It would be interesting if other middle children could do the same exercise to see if they get the same result; and, come to that, if those of you who are firstborns could see if you have a preponderance of middle children. At first guess I would say it looks unlikely, because out of my own group of firstborn friends, lots of you are also friends of each other. But worth investigating I think.

Any thoughts?

[identity profile] undyingking.livejournal.com 2010-11-17 11:36 am (UTC)(link)
Ooh, interesting, I shall have to look at that Quirkology stuff when I have some time.

I'm sure the extra data you mention will have been gathered, but digging out the relevant research is probably going to be a non-trivial task. Maybe another thing for when I have some time...

[identity profile] mr-malk.livejournal.com 2010-11-17 01:09 pm (UTC)(link)
I'm surprised you've not encountered Robert Wiseman/Quirkology before. I think it would be right up your street. I had seen the website and a few experiment/trick videos he has on Youtube (also worth looking at), and I was given the book "Quirkology" for Christmas last year. Very interesting and entertaining read. One for your book group perhaps. Could be interesting/entertaining/contentious if any of them like their astrology.

[identity profile] undyingking.livejournal.com 2010-11-17 01:35 pm (UTC)(link)
Mm, as far as I know they're all pretty rational, but this might be a good way of flushing out the closet loons!