<human>:  I have a question about the National Assessment of Adult Literacy. Why is it that the average score for the USA is lower than the average score for the UK?
<bot>: The average score for the USA is lower than the average score for the UK because the USA has a higher proportion of people who are illiterate. The National Assessment of Adult Literacy is a test that measures the reading and writing skills of adults in the USA. The test is administered by the National Center for Education Statistics, and it is designed to measure the reading and writing skills of adults in the USA.