English speakers who are 18 or under use the word ‘like’ in conversation over five times as often as speakers who are over 70; ‘because’ is the most misspelled English word globally; the word ‘love’ is said and written over six times more frequently than the word ‘hate’. We know all of this because of a multibillion-word database called the Cambridge English Corpus.

An Android app which keeps tabs on users’ mood swings and works out what might be causing them has been developed by researchers, with implications for psychological therapy and improving well-being.