The word ‘personality’ comes from the Latin, ‘persona’ meaning ‘mask’ but what determines your personality or individual character? Throughout time, religions and cultures have found various ways to explain the enigma of personality.
Even today, in Japan, it’s thought that personality is linked with blood type: Those with blood type A are considered perfectionists, good team players, but over-anxious; type Os are seen as curious, generous and stubborn; ABs are viewed as creative, mysterious and unpredictable; while blood type Bs are cheerful, eccentric and selfish.
In the US, they are more pragmatic – there are over 2,500 tests to evaluate personality and character, of which the Myers-Briggs Type Indicator is one of the of most popular and well known.
Two schools of thought battle it out regarding what it is that makes you who you are, and that’s the ‘Nature versus Nurture’ debate. While some experts say that your personality is coded into your genes, others believe it is your upbringing that sculpts your character.
Oliver James, child clinical psychologist and author of ‘How To Develop Emotional Health’, believes that the Human Genome Project (an international scientific research project that seeks to fully map the human genome) has ‘almost definitely proven’ that personality is not caused by genes. “It is one of the best kept scientific secrets at the moment. Study after study after study has shown either zero effect of genes or very, very little effect. The question is, at what point will scientists accept that the hypothesis is false?”
Susan Greenfield, a neuroscientist at Oxford University, agrees to a certain extent, but believes the answer may not be so black and white. “My own view is that although genes are necessary, they’re not sufficient. So, the idea, that trapped inside the DNA is an extrovert personality, I think, is a very misleading one.”
But she agrees with James when she says that you can’t link traits to specific genes.
“Just because DNA is clearly crucial, it’s a very indirect contribution. It’s not one you can map directly – the gene for good housekeeping, the gene for being witty and so on – it doesn’t work like that.”
Most experts agree that environmental factors play a big role too. “We, as human beings, are very dependent on our environments,” says Greenfield. “That’s why we occupy more ecological niches that any other species on the planet – because we’re freed from the tyranny of our genes, so that we can actually benefit from experiences and adapt to our environment. The whole point of being human is that we’re unique, not that you’re a plus on one feature and a minus on another feature. It’s not like you’re analogue. You’re a highly dynamic creature that interacts all the time with the environment.”
Many of these environmental factors begin in childhood. The quality of childcare, how responsive your parents are, the standards they teach you and the rules they impose are all hugely influential. It’s in the first six years of life when patterns of hormones and brainwaves are established. These are critical when it comes to determining your early personalities, but, as James says, your characters change after that, too. “Traditionally, psychologists have always spoken of the ‘big five’ personality traits. But people’s ‘big five’ traits vary enormously according to what role they’re in. So people might be very outgoing with their romantic partner but might be very introverted when talking to their father. The idea that has been discredited is that we have a single personality, which is genetically inherited and which we manifest in all contexts.”
The ‘big five’ he refers to are ‘openness, ‘conscientiousness’, ‘extraversion’, ‘agreeableness’ and ‘neuroticism’ – a model generally accepted by psychologists everywhere. We all have varying levels of each trait and by assessing each we can gauge our own personalities:
- Openness – This is an expression of the extent you are willing to accept new experiences. People who are open tend to be more creative and aware of their feelings.
- Conscientiousness – A trait that appears in the ambitious and the self-disciplined. Conscientiousness people are more prone to planning than spontaneity.
- Extraversion – Extraverts enjoy engaging with people, are enthusiastic, action-oriented, like to talk and assert themselves in company.
- Agreeableness – Agreeable individuals aim for harmony. They want everyone to get along. People heavily loaded with this trait are considerate, kind, generous, trusting and helpful.
- Neuroticism – This is the tendency to experience negative feelings, such as fear, hate, anxiety and depression.
So do you know who you are yet?