Can watching short films featuring actors impersonating Charles Darwin and Albert Einstein improve your brainpower? Researchers working in 100 British primary schools will try to find out from September, thanks to a £290,000 grant from the Education Endowment Foundation to test whether instructing children aged 10 and 11 in “growth mindset”, an idea from American psychology, can improve results. “Growth mindset” is the name given by psychologist Carol Dweck to the idea that intelligence can…