However, the researchers said that despite a lower number of invasive tests, the heavier reliance of this method on chorionic villus sampling earlier in pregnancy could actually mean an increase in the number of healthy babies lost if the miscarriage rate using this method was closer to 2%.

BBC: Down's test miscarriage warning

The new tests are perhaps the closest Wales will get to having a standard method of assessing pupils once again.

BBC: The literacy challenge facing Wales

Because most people read words more quickly than they can identify and name colours, this widely used method tests their ability to inhibit the urge to read what is written and instead focus on the task of naming the colour.

ECONOMIST: Cognitive disenhancement