This paper uses the ability to recall one's age correctly as an indicator of numeracy. We show that low levels of nutrition impaired numeracy in industrializing England, 1780-1850. Numeracy declined markedly among those born during the war years, especially where wheat was dear. England's...

This paper uses the ability to recall one’s age correctly as an indicator of numeracy. We show that low levels of nutrition impaired numeracy in industrializing England, 1780-1850. Numeracy declined markedly among those born during the war years, especially where wheat was dear. England’s...

Using census-based data on the ability to recall one's age, we show that low levels of nutrition impaired numeracy in industrializing England, 1780 to 1850: cognitive ability declined among those born during the Napoleonic wars. The effect was stronger in areas where grain was expensive and...