Who made me what I am?

Is it genes or upbringing that shapes our characters, talents and traits? As an adopted child, the question has always fascinated Kate Hilpern

Last week, as I sat in a queue at a petrol station wondering why everyone in front of me seemed to be moving in slow motion, I realised I can no longer deny my husband's claims that I'm impatient. Perhaps it's in my nature, I pondered. My dad twitches at the very sight of a queue.

The "nature versus nurture" debate is never far from your mind when you're adopted. Most children spend their childhoods (and sometimes their adulthoods) being told they have their dad's brains, their mum's sociability and/or a whole host of other traits, but adopted people often stop to wonder where they get their characteristics from and how different they might be if they'd grown up with their birth parents.

My natural parents were teenagers when I was born and in 1970, that generally meant one thing: adoption. My adoptive parents were always open about it and from early on, I felt it explained why I loved my mum, dad and brother but I didn't feel like them. To be fair, even my mum and dad didn't seem to have much in common. He was gregarious, confident and assertive, with a military sense of planning; she was introverted, meek and untidy, always ready to drop everything to put someone else's needs first. Neither my brother nor I were especially like either of them or, indeed, like each other.

It's not that I expected families to be clones. But I noticed that even in other homes where personalities were poles apart, there was a way of being that made them identifiable as a family. Ours had this feeling of four random people thrown together – which, I suppose when you have no shared DNA, is exactly what it is.

Mine were good, loving parents. We were happy. But particularly during my teenage years, I remember the frustration of trying to find common ground. I envied friends whose parents understood them at least some of the time. Mine seemed to look at me, utterly bemused (mind you, I was an awful teenager).

So when I met my birth family aged 18, you can imagine my joy at finding, for the first time, people who not only looked like, but felt like, me. They too were excitable and often spoke before they thought, then worried about it afterwards, and similar things seemed to make them angry, sad or happy. There were other connections – the way my birth father arrived at the conclusions he did, the way particular things made him cringe.

Tragically, my birth mother died when I was a baby, so I would never meet her. But I got to know her parents and four older siblings and indeed my birth father and his extended family. It took time to get a true sense of their personalities, but I was struck by this strong likeness.

Later, I started working for the adoption charity Norcap as an intermediary in adoption reunions and I noticed how many adopted people even talked like their birth parents – with hesitancy, very slowly or in a high-pitched voice, for example – having never met them. Even the way they responded to the contact from the other person often revealed similarities – you'd get the dramatic types or the quietly dignified types; the ones who sobbed and the ones with long silences.

"It never ceases to hit you in the face – these similarities in adoption reunions," says Jean Milsted, who leads Norcap – a view reiterated by Genes Reunited. "It's the thing everyone talks about. Some of it is a need to feel the same, so you get the, 'Oh look, we both like chips!' But actually, quite profound similarities often come through: a shared sense of humour, the way people speak, their handwriting – a whole bunch of things that must have a huge genetic component. I remember one birth mother having her first conversation with her daughter who'd been adopted. Both suffered with an inability to close conversations. They wound up talking all night."

No prizes, then, for guessing where I sat in the nature/nurture debate during my twenties. In fact, I began to feel something of an authority on the subject when it came up in social conversation. For most people, I explained, it's an abstract concept, impossible to pick apart. For me, it was both real and tested.

But then things changed. Friends increasingly pointed out that, unlike many of them, I'd always been quite responsible with money. I realised I had exactly the same attitude to working, spending and saving as my parents – far more so than in my birth family. In fact, when I stopped to think about it, a lot of my values were the same as theirs. When I went away for weekends with my mum, I noticed how easily we would chat on most issues – because, I realised, we had a similar outlook on many things. My mum, meanwhile, has always said I'm like my dad, who died two years ago. "I don't think so," was always my stock response, wondering what planet she was on, but I've come to see that I do have many of his principles, traits and aspirations.

I have children of my own now – Lucy, aged four, and Sam, two – and I've often caught myself (as most of us do in the end) sounding like my own mother. Then there are the aspects of my personality that must surely be nurture, in that they are reactions to things that happened in my childhood. Nancy Verrier, author of The Primal Wound, says many adopted people share an underlying fear of abandonment, for example, due to being removed from their natural mother at birth.

Robert Plomin, professor of behavioural genetics at King's College London's Institute of Psychiatry, says the history of the nature/nurture debate has been as changeable as my own journey of thought. "Very early on, before the Second World War, the pendulum swung firmly towards nature," he says. "But then with the horrors of Nazi Germany and eugenics, it swung very much over to nurture, so that by the Sixties, the thinking was that environmentalism was seen as everything and a lot of mother-blaming went on. Now, with adoption and twin studies, the pendulum is somewhere in the middle, with an acceptance that both are significant."

What's most striking about research looking at twins who are reared apart, then meet for the first time, is that they report similarity in mannerisms, he says – how much they use their hands, how they sit down, how they walk. "If you thought anything was cultural, it would be things like how expressive you are when you talk. Even artistic preferences such as style of dress are often similar. This is the area I'd like to see studied more."

I remember my own maternal grandfather abruptly walking out of the room the first day I met him. He returned with tears in his eyes to explain that while he had expected me to look like my birth mother, what he was unprepared for was that my gestures were the same – the way I moved my arms while talking, the way I threw my head back when I laughed.

Some data, Professor Plomin adds, suggests there is even a moderate genetic influence on interests. "The research on identical twins reared apart reveals that interests, even in things like carpentry, may have a hereditary factor."

In 2009, Professor Plomin himself led a study of more than 3,700 sets of twins that found an unshakable self-belief is in the genes. "Everyone has assumed self-confidence is a matter of environment," he says. "But our research shows that it is genetically influenced and that self-confidence predicts achievement at school." Children with a greater belief in their own abilities often perform better at school, even if they are actually less intelligent, he explains. "We are not saying that genes are the only factor or that upbringing and environment cannot change things. But there is something genetic in self-confidence which I would think of as a personality trait that would be stable throughout life."

The more precise the character trait, the more likely you are to find a genetic link, reports Simon Moore, leader in psychology at London Metropolitan University. "Sociability, for example, is probably more associated with your father than your mother, whilst educational-based intelligence is more related to mothers."

But it's important not to get carried away with genes, he warns. "There are five key characteristics that tend to be studied in this context: openness, consciousness, extroversion, agreeableness and neuroticism. When you study these in identical twins, the biggest percentage is for extroversion, but even that's only 27 per cent similarity, suggesting that nurture is more influential than nature. That drops to 16 per cent for agreeableness and the rest have even lower percentages."

He believes personality isn't a neat, rounded, objective concept anyway. "If you are labelled 'unstable', you are considered someone who should be locked away, but I think the opposite is true. Personality is designed to help you navigate through life's social minefield and it is therefore flexible. You often hear people say, 'I could never hurt anyone,' but of course they could under the right circumstances. Then there are people who say they are introvert, but if motivated, can be extrovert. There are people that fall into the extremes – cripplingly shy, for instance – but for 95 per cent of the population, they have an adaptable set of characteristics, which change on different days of the week and certainly as we get older. We are different things to different people, too."

Oliver James, psychologist and author of How Not to F*** Them Up (Vermilion), believes genes are even less important. "It's not just that studies showing genetic links point to low heritability, but that the twin studies that make genetic claims are presented as being rock-solid science – but they're nothing of the sort," he says.

Because twins look so similar, they are treated more similarly than non-identical twins, he claims. "It's a very obvious point that scientists have conveniently ignored. So I never trusted those figures in the first place. Meanwhile, the classic study for adoptees is the Thomas Bouchard study, but that is also extremely suspect because he refused to let anyone see the data. As for studies of twins reared apart, you'll see that many are in touch with each other before being tested. It's inevitable that they'd have been looking for similarities rather than differences during that time and if we're in a situation where we are looking for similarities, we will find them."

I will have done the same when I was 18, James believes. I can see that, but only to a degree. Even my mum has been struck by the similarities between me and my birth family – similarities that, in all honesty, she'd probably prefer not to exist. Still, James insists that culture, the way parents care for their children and position in the family are by far the most influential.

His last point is important. Debate about the significance of birth order goes right to the heart of the nature versus nurture argument. It all started when Austrian psychiatrist Alfred Adler argued that it can define the way someone deals with life. He identified first-borns as driven and often suffering from a sense of having been "dethroned" by a second child; younger children, he stated, were hampered by having been more pampered than older siblings. But although it's a view since reiterated by other renowned psychologists, slapping generalised labels on a child is controversial. My own children often take turns at being the "naughty one" or the "diligent one" in a single morning.

For me, what's most interesting is that, for the most part, the debate is becoming less about whether it is nature or nurture and more to do with the interplay between the two. That is, how did my upbringing shape the traits I was born with? And how much of my own children's personalities – Lucy's infinite curiosity, her resilience and independence, for example – are down to me (and others) responding to her innate characteristics? How and why will these pan out the way they will in the future? Exactly how this interplay works will require a lot more research, so I'll just have to be patient – unfortunately not one of my strong points.

Sport
footballHe started just four months ago
News
Nigel Farage celebrates with a pint after early local election results in the Hoy and Helmet pub in South Benfleet in Essex
peopleHe has shaped British politics 'for good or ill'
News
One father who couldn't get One Direction tickets for his daughters phoned in a fake bomb threat and served eight months in a federal prison
people... (and one very unlucky giraffe)
Arts and Entertainment
Sink the Pink's 2013 New Year's Eve party
musicFour of Britain's top DJs give their verdict on how to party into 2015
PROMOTED VIDEO
Life and Style
ebookNow available in paperback
ebooks
ebookPart of The Independent’s new eBook series The Great Composers
Arts and Entertainment
(L-R) Amanda Peet as Tina Morris, Melanie Lynskey as Michelle Pierson, Abby Ryder Fortson as Sophie Pierson, Mark Duplass as Brett Pierson and Steve Zissis as Alex Pappas in Togetherness
TV First US networks like HBO shook up drama - now it's comedy's turn
News
i100
Travel
Pool with a view: the mMarina Bay Sands in Singapore
travel From Haiti and Alaska to Namibia and Iceland
Latest stories from i100
Have you tried new the Independent Digital Edition apps?

ES Rentals

    Independent Dating
    and  

    By clicking 'Search' you
    are agreeing to our
    Terms of Use.

    iJobs Job Widget
    iJobs General

    Selby Jennings: VP/SVP Credit Quant- NY- Investment Bank

    Not specified: Selby Jennings: VP/SVP Credit Quant Top tier investment bank i...

    Ashdown Group: Senior Marketing Executive- City of London, Old Street

    £40000 - £43000 per annum + benefits: Ashdown Group: Senior Marketing Executiv...

    Ashdown Group: Marketing Manager

    £40000 - £43000 per annum + benefits: Ashdown Group: An international organisa...

    Ashdown Group: Internal Recruiter -Rugby, Warwickshire

    £25000 - £30000 per annum: Ashdown Group: Internal Recruiter -Rugby, Warwicksh...

    Day In a Page

    Aren’t you glad you didn’t say that? The worst wince-and-look-away quotes of the year

    Aren’t you glad you didn’t say that?

    The worst wince-and-look-away quotes of the year
    Hollande's vanity project is on a high-speed track to the middle of nowhere

    Vanity project on a high-speed track to nowhere

    France’s TGV network has become mired in controversy
    Sports Quiz of the Year

    Sports Quiz of the Year

    So, how closely were you paying attention during 2014?
    Alexander Armstrong on insulting Mary Berry, his love of 'Bargain Hunt', and life as a llama farmer

    Alexander Armstrong on insulting Mary Berry and his love of 'Bargain Hunt'

    From Armstrong and Miller to Pointless
    Sanchez helps Gunners hold on after Giroud's moment of madness

    Sanchez helps Gunners hold on

    Olivier Giroud's moment of madness nearly costs them
    A Christmas without hope: Fears grow in Gaza that the conflict with Israel will soon reignite

    Christmas without hope

    Gaza fears grow that conflict with Israel will soon reignite
    After 150 years, you can finally visit the grisliest museum in the country

    The 'Black Museum'

    After 150 years, you can finally visit Britain's grisliest museum
    No ho-ho-hos with Nick Frost's badass Santa

    No ho-ho-hos with Nick Frost's badass Santa

    Doctor Who Christmas Special TV review
    Chilly Christmas: Swimmers take festive dip for charity

    Chilly Christmas

    Swimmers dive into freezing British waters for charity
    Veterans' hostel 'overwhelmed by kindness' for festive dinner

    Homeless Veterans appeal

    In 2010, Sgt Gary Jamieson stepped on an IED in Afghanistan and lost his legs and an arm. He reveals what, and who, helped him to make a remarkable recovery
    Isis in Iraq: Yazidi girls killing themselves to escape rape and imprisonment by militants

    'Jilan killed herself in the bathroom. She cut her wrists and hanged herself'

    Yazidi girls killing themselves to escape rape and imprisonment
    Ed Balls interview: 'If I think about the deficit when I'm playing the piano, it all goes wrong'

    Ed Balls interview

    'If I think about the deficit when I'm playing the piano, it all goes wrong'
    He's behind you, dude!

    US stars in UK panto

    From David Hasselhoff to Jerry Hall
    Grace Dent's Christmas Quiz: What are you – a festive curmudgeon or top of the tree?

    Grace Dent's Christmas Quiz

    What are you – a festive curmudgeon or top of the tree?
    Nasa planning to build cloud cities in airships above Venus

    Nasa planning to build cloud cities in airships above Venus

    Planet’s surface is inhospitable to humans but 30 miles above it is almost perfect