Daily Express, April 10, 2017
Here the word ‘slower’ is used wrongly and correctly in the same story.
Slower is an adjective, for example ‘the race was run in a slower time’. However in the first instance it is wrongly used as an adverb to modify the verb ‘shrink’. The words that are needed here are the adverb and comparative ‘more slowly’. It is used correctly in the second instance, as an adjective to modify the noun phrase ‘brain cell loss’.