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.

News
More than 90 years of car history are coming to an end with the abolition of the paper car-tax disc
newsThis and other facts you never knew about the paper circle - completely obsolete tomorrow
News
Kim Jong Un gives field guidance during his inspection of the Korean People's Army (KPA) Naval Unit 167
newsSouth Korean reports suggest rumours of a coup were unfounded
Arts and Entertainment
You could be in the Glastonbury crowd next summer if you follow our tips for bagging tickets this week
music
Life and Style
It is believed that historically rising rates of alcohol consumption have contributed to the increase
food + drink
PROMOTED VIDEO
Life and Style
ebooksA superb mix of recipes serving up the freshest of local produce in a delicious range of styles
Life and Style
ebooksFrom the lifespan of a slug to the distance to the Sun: answers to 500 questions from readers
News
people
News
Piers Morgan tells Scots they might not have to suffer living on the same island as him if they vote ‘No’ to Scottish Independence
peopleBroadcaster has a new role bringing 'the big stories that matter' to US
Arts and Entertainment
Kylie performs during her Kiss Me Once tour
musicReview: 26 years on from her first single, the pop princess tries just a bit too hard at London's O2
Life and Style
Moves to regulate e-cigarettes and similar products as medicines come amid increasing evidence of their effectiveness
healthHuge anti-smoking campaign kicks off on Wednesday
Life and Style
fashionEveryone, apparently
Voices
The erotic novel Fifty Shades of Grey has already been blamed for a rise in the number of callouts to the fire brigade for people trapped in handcuffs
voicesJustine Elyot: Since Fifty Shades there's no need to be secretive about it — everyone's at it
Arts and Entertainment
A new Banksy entitled 'Art Buff' has appeared in Folkestone, Kent
art
Arts and Entertainment
Shia LaBeouf is one of Brad Pitt's favourite actors in the world ever, apparently
filmsAn 'eccentric' choice, certainly
Life and Style
An Internet security expert has warned that voice recognition technology needs to be more secure
techExperts warn hackers could control our homes or spend our money simply by speaking
Extras
indybest
News
peopleBenjamin Netanyahu trolled by group promoting two-state solution
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

    Senior Marketing Manager - Central London - £50,000

    £40000 - £50000 per annum: Ashdown Group: Marketing Manager (Campaigns, Offlin...

    Head of Marketing - Acquisition & Direct Reponse Marketing

    £90000 - £135000 per annum: Ashdown Group: Head of Marketing (B2C, Acquisition...

    1st Line Service Desk Analyst

    £27000 - £30000 Per Annum: Clearwater People Solutions Ltd: Our client who are...

    Trainee Recruitment Consultant - Birmingham - Huxley Associates

    £18000 - £23000 per annum + Commission: SThree: Huxley Associates are currentl...

    Day In a Page

    Isis is an hour from Baghdad, the Iraq army has little chance against it, and air strikes won't help

    Isis an hour away from Baghdad -

    and with no sign of Iraq army being able to make a successful counter-attack
    Turner Prize 2014 is frustratingly timid

    Turner Prize 2014 is frustratingly timid

    The exhibition nods to rich and potentially brilliant ideas, but steps back
    Last chance to see: Half the world’s animals have disappeared over the last 40 years

    Last chance to see...

    The Earth’s animal wildlife population has halved in 40 years
    So here's why teenagers are always grumpy - and it's not what you think

    Truth behind teens' grumpiness

    Early school hours mess with their biological clocks
    Why can no one stop hackers putting celebrities' private photos online?

    Hacked photos: the third wave

    Why can no one stop hackers putting celebrities' private photos online?
    Royal Ballet star dubbed 'Charlize Theron in pointe shoes' takes on Manon

    Homegrown ballerina is on the rise

    Royal Ballet star Melissa Hamilton is about to tackle the role of Manon
    Education, eduction, education? Our growing fascination with what really goes on in school

    Education, education, education

    TV documentaries filmed in classrooms are now a genre in their own right
    It’s reasonable to negotiate with the likes of Isis, so why don’t we do it and save lives?

    It’s perfectly reasonable to negotiate with villains like Isis

    So why don’t we do it and save some lives?
    This man just ran a marathon in under 2 hours 3 minutes. Is a 2-hour race in sight?

    Is a sub-2-hour race now within sight?

    Dennis Kimetto breaks marathon record
    We shall not be moved, say Stratford's single parents fighting eviction

    Inside the E15 'occupation'

    We shall not be moved, say Stratford single parents
    Air strikes alone will fail to stop Isis

    Air strikes alone will fail to stop Isis

    Talks between all touched by the crisis in Syria and Iraq can achieve as much as the Tornadoes, says Patrick Cockburn
    Nadhim Zahawi: From a refugee on welfare to the heart of No 10

    Nadhim Zahawi: From a refugee on welfare to the heart of No 10

    The Tory MP speaks for the first time about the devastating effect of his father's bankruptcy
    Witches: A history of misogyny

    Witches: A history of misogyny

    The sexist abuse that haunts modern life is nothing new: women have been 'trolled' in art for 500 years
    Shona Rhimes interview: Meet the most powerful woman in US television

    Meet the most powerful woman in US television

    Writer and producer of shows like Grey's Anatomy, Shonda Rhimes now has her own evening of primetime TV – but she’s taking it in her stride
    'Before They Pass Away': Endangered communities photographed 'like Kate Moss'

    Endangered communities photographed 'like Kate Moss'

    Jimmy Nelson travelled the world to photograph 35 threatened tribes in an unashamedly glamorous style