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Do genes affect our intelligence? The debate ‘is over’

| | May 1, 2018

Researchers are now becoming confident enough to claim that the information available from sequencing a person’s genome – the instructions encoded in our DNA that influence our physical and behavioural traits – can be used to make predictions about their potential to achieve academic success.

All too often genes are read as destiny. But in truth there’s rather little in your genetic make-up that fixes traits or behaviour with any clarity. There are some genetic diseases that particular gene mutations will give you if you’re unlucky enough to inherit them. But most traits (including diseases) that are influenced by genes manifest only as tendencies.

Partly this is because a lot of traits are influenced by many genes, interacting and correlating with one another in complex ways that are hard, perhaps impossible, to anticipate. But it’s also because genes are themselves influenced by environmental factors, which can cause them to be activated or suppressed.

The data both from twin studies and DNA analysis are unambiguous: intelligence is strongly heritable. Typically around 50 per cent of variations in intelligence between individuals can be ascribed to genes, although these gene-induced differences become markedly more apparent as we age. As [psychologist Stuart] Ritchie says: like it or not, the debate about whether genes affect intelligence is over.

Read full, original post: The IQ trap: how the study of genetics could transform education

The GLP aggregated and excerpted this article to reflect the diversity of news, opinion, and analysis. Click the link above to read the full, original article.

2 thoughts on “Do genes affect our intelligence? The debate ‘is over’”

  1. its not a definite predictor of destiny but there is a positive correlation between someone with high iq and someone who is successful. i cant believe we are still having an arguement over whether genes determine someone’s intelligence levels or not. of course it does. otherwise there wouldnt be such a thing as slow learners and fast learners. are you one of those silly people who also believes there’s no differences between female brains and male brains?

  2. its not over. its more like you WANT the debate to be over because you are scared that if we do anymore research in to this topic of genes and intelligence level that the conclusions will not be something you like to see. do more research in to this topic theres never enough research done on the intelligence of the human species and what creates it. humans are animals and just like animals there are naturally smarter humans and naturally less smart humans and yes genetics plays a role in it whether you like it or not.

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