bbc horizon: battle of the brains Unit 4

N Narrator I Ian Deary Woman 1 1st woman etc. M1 1st man etc. N: Recent research into the history of IQ tests in Scotland suggests your IQ score might predict, to an extent at least, your health and even your life expectancy. W1: You have 45 minutes to do the test, OK M1: OK. N: Bill and Davina are 79 years old. This is the second time theyve done this test. The first time was in 1932, when every 11yearold in Scotland was put through an intelligence test. Its the only time this kind of mass testing has ever been done in the UK. The results were rediscovered recently in an Edinburgh basement. If you want to know how our intelligence changes as we get older, these results are a potential goldmine. I: We brought hundreds of people back and we got them to sit the exact same test that they had sat when they were aged 11. Now, these people are now 79 or 80 years old. We gave the same instructions. We gave the same test. And we gave the same time limit. M2: It was a lit