Another interesting statistic comes out of those twin studies I mentioned, which is that even identical twins raised together come out 50% different from each other. I don't know how they work out the maths but it seems plausible when you think about it. Identical twins are so obviously alike in many ways but once you get to know them they are obviously very different people - one is often more outgoing with a 'stronger' personality than the other for example. I emailed Steven Pinker - the main (or at least best known) exponent of these studies to ask him about it.
"I was particularly intrigued by something I think I heard you say (on Radio 4 - In Search of Ourselves) about accounting for the huge (50%?) difference between twins. The consensus seemed to be that it had to be put down to random events (chaos theory?) which it was agreed, is not very satisfactory. Nothing else was left. I think I have another explanation, which is that it seems to me that any pair of people who spend a large amount of time together (spouses, siblings, business partners, double acts?) tend to go to opposite poles in various ways - they take up opposite or complementary roles in the relationship. The identical twins, one of which is outgoing and assertive, the other retiring and passive is an obvious example, the active dominant selfish husband and passive self-sacrificing wife (which also happens in gay couples), good cop/bad cop, straight man/clown. It's all about how they react to each other. I'm sure you get the picture. Of course this doesn't work for twins raised apart (which we would expect, paradoxically, to be more alike)"
He wrote back "Dear Steve, It’s indeed a plausible hypothesis, and a testable one: compare siblings (particularly identical twins) who grow up together with those who grow up in different adopted families. According to the differentiation hypothesis, the ones who grow up together should be less correlated than the ones who grow up apart (an effect that is in the opposite direction to any similarity enforced by parental shaping, so it’s a particularly powerful prediction). Unfortunately, the bulk of the data suggest that there is no difference in the correlations, so it does not appear that the differentiation hypothesis is correct. For more discussion, see Judith Rich Harris’s No Two Alike, which is focused on exactly this question. Sincerely, Steve Pinker"
I've not got around to looking at the book but the whole conundrum does show up the amount of room for manouver (hate that word. The correct spelling is so idiotic so you'll have to put up with mine. Another stupid one is 'gauge'. Ech!) even between people who should be almost exactly the same. Maybe it is about souls and free will after all. The differences between me and my brother Ian were always very obvious. He always craved company and, left to his own devices, soon got very bored. When we moved to a more leafy suburban area with lots of kids down the street he immediately joined in. He had a lot of friends at school, was in the scouts and enjoyed games and sports. He was generally easier company. He was a likeable lad. Unsurprisingly there has always been this tacit comparison going on - Why can't you be more like your brother? and the feeling that really, if he can do it why can't I? I was just being difficult.
I gave this some thought very early on in my quest to find out what the heck's going on and it occurred to me quite quickly that of course, although we have the same parents (I assume) we were brought up under very different circumstances - two children, born one after the other, always are. Quite apart from obvious changes, like promotion and moving home, there is the simple fact that the first child is an only child for a time. Even if that's only for a year it's something the second child never experiences. But there's a lot more than that. Think of almost anything you do - changing a wheel, baking a cake, filling out your tax return - you are almost always better at it the second time and not just a little better - hugely better. Plus you've already got the equipment - you don't have to go out and buy a lot of stuff at a time when you may be very strapped for cash. And you know what to expect. Every child is different but broadly, if the first one is still alive you know that basically it's possible. You can do this. Of course there can be a down side. Two children costs more than one and may exacerbate an already desperate situation.
In my case I was an unplanned baby - a broken condom baby - and my family being what they are, they were worrying about everything. They'd wanted to save, get a nicer place to live, to get more security, and now here was I. Plus the birth was long and difficult and my mother was alone with me in that basement flat in Hove. My brother on the other hand was planned (to keep me company - Hah!) and popped out like a cork.
I recently heard the phrase 'Refrigerator Mums' on the radio in connection with autism and its causes. You can imagine what it means - mothers who are distant and undemonstrative (cold and hard and perhaps a bit angular and pale and a bit too clean) with their babies. The epithet has fallen into disrepute of late because it smacks too much of misogyny ('She's frigid') and its coiner said he wished he'd taken into account more of the troubles mothers have with their children and finding ways to help instead of simply blaming them. Certainly my father would admit (if he were still alive) that, confronted with the housework undone and an unresponsive wife, he was not very understanding and basically told her to snap out of it. Add to this the fact that my mother was far from stupid and had dreams of her own you can see it was a miserable situation. Other findings suggest that peri-natal depression, unwanted children and even 'not-yet' babies tend to lead to psychiatric problems later on for the child, and there is a whole realm of psychiatry called 'attachment theory' that is about what happens to people when they don't get enough affection as an infant. My mum still maintains that I pushed her away as a baby - literally - when she tried to hold me, which apparently is a classic symptom of attachment disorder (the fact that she blames me, even as a tiny infant is sort of tedious). We all know what happened to the orphans that were kept without care or attention in Romania's orphanages. Children die without love, but apparently there are measurable affects even with fairly normal and low level neglect. On top of all that apparently Dr Spock was saying you shouldn't go to a crying baby...
By the time Ian was born my dad had done a bit of reading and discovered my mum was not simply being lazy and he was by all accounts a lot more supportive.
What are we to make of all this in the light of the 50:40:10 (genetics (peer group : parent)) split mentioned before? Is it irrelevant? Can a person simply leave these early difficulties behind (it's only five years after all) or will they affect the rest of your life?
to be continued...
"I was particularly intrigued by something I think I heard you say (on Radio 4 - In Search of Ourselves) about accounting for the huge (50%?) difference between twins. The consensus seemed to be that it had to be put down to random events (chaos theory?) which it was agreed, is not very satisfactory. Nothing else was left. I think I have another explanation, which is that it seems to me that any pair of people who spend a large amount of time together (spouses, siblings, business partners, double acts?) tend to go to opposite poles in various ways - they take up opposite or complementary roles in the relationship. The identical twins, one of which is outgoing and assertive, the other retiring and passive is an obvious example, the active dominant selfish husband and passive self-sacrificing wife (which also happens in gay couples), good cop/bad cop, straight man/clown. It's all about how they react to each other. I'm sure you get the picture. Of course this doesn't work for twins raised apart (which we would expect, paradoxically, to be more alike)"
He wrote back "Dear Steve, It’s indeed a plausible hypothesis, and a testable one: compare siblings (particularly identical twins) who grow up together with those who grow up in different adopted families. According to the differentiation hypothesis, the ones who grow up together should be less correlated than the ones who grow up apart (an effect that is in the opposite direction to any similarity enforced by parental shaping, so it’s a particularly powerful prediction). Unfortunately, the bulk of the data suggest that there is no difference in the correlations, so it does not appear that the differentiation hypothesis is correct. For more discussion, see Judith Rich Harris’s No Two Alike, which is focused on exactly this question. Sincerely, Steve Pinker"
I've not got around to looking at the book but the whole conundrum does show up the amount of room for manouver (hate that word. The correct spelling is so idiotic so you'll have to put up with mine. Another stupid one is 'gauge'. Ech!) even between people who should be almost exactly the same. Maybe it is about souls and free will after all. The differences between me and my brother Ian were always very obvious. He always craved company and, left to his own devices, soon got very bored. When we moved to a more leafy suburban area with lots of kids down the street he immediately joined in. He had a lot of friends at school, was in the scouts and enjoyed games and sports. He was generally easier company. He was a likeable lad. Unsurprisingly there has always been this tacit comparison going on - Why can't you be more like your brother? and the feeling that really, if he can do it why can't I? I was just being difficult.
I gave this some thought very early on in my quest to find out what the heck's going on and it occurred to me quite quickly that of course, although we have the same parents (I assume) we were brought up under very different circumstances - two children, born one after the other, always are. Quite apart from obvious changes, like promotion and moving home, there is the simple fact that the first child is an only child for a time. Even if that's only for a year it's something the second child never experiences. But there's a lot more than that. Think of almost anything you do - changing a wheel, baking a cake, filling out your tax return - you are almost always better at it the second time and not just a little better - hugely better. Plus you've already got the equipment - you don't have to go out and buy a lot of stuff at a time when you may be very strapped for cash. And you know what to expect. Every child is different but broadly, if the first one is still alive you know that basically it's possible. You can do this. Of course there can be a down side. Two children costs more than one and may exacerbate an already desperate situation.
In my case I was an unplanned baby - a broken condom baby - and my family being what they are, they were worrying about everything. They'd wanted to save, get a nicer place to live, to get more security, and now here was I. Plus the birth was long and difficult and my mother was alone with me in that basement flat in Hove. My brother on the other hand was planned (to keep me company - Hah!) and popped out like a cork.
I recently heard the phrase 'Refrigerator Mums' on the radio in connection with autism and its causes. You can imagine what it means - mothers who are distant and undemonstrative (cold and hard and perhaps a bit angular and pale and a bit too clean) with their babies. The epithet has fallen into disrepute of late because it smacks too much of misogyny ('She's frigid') and its coiner said he wished he'd taken into account more of the troubles mothers have with their children and finding ways to help instead of simply blaming them. Certainly my father would admit (if he were still alive) that, confronted with the housework undone and an unresponsive wife, he was not very understanding and basically told her to snap out of it. Add to this the fact that my mother was far from stupid and had dreams of her own you can see it was a miserable situation. Other findings suggest that peri-natal depression, unwanted children and even 'not-yet' babies tend to lead to psychiatric problems later on for the child, and there is a whole realm of psychiatry called 'attachment theory' that is about what happens to people when they don't get enough affection as an infant. My mum still maintains that I pushed her away as a baby - literally - when she tried to hold me, which apparently is a classic symptom of attachment disorder (the fact that she blames me, even as a tiny infant is sort of tedious). We all know what happened to the orphans that were kept without care or attention in Romania's orphanages. Children die without love, but apparently there are measurable affects even with fairly normal and low level neglect. On top of all that apparently Dr Spock was saying you shouldn't go to a crying baby...
By the time Ian was born my dad had done a bit of reading and discovered my mum was not simply being lazy and he was by all accounts a lot more supportive.
What are we to make of all this in the light of the 50:40:10 (genetics (peer group : parent)) split mentioned before? Is it irrelevant? Can a person simply leave these early difficulties behind (it's only five years after all) or will they affect the rest of your life?
to be continued...