[picture taken from @TheObjective_es]
Text taken from page 32 at
Tim Falla and Paul A. Davies, Solutions
–Upper-intermediate student´s book-
“Although teenagers in the UK generally understand about 40,000 different words, the number of words they actually use is far smaller than you might think-sometimes only 800 words. An inability to distinguish between formal and informal language is almost worrying. Ever since the 1950s, speaking correct English has been nowhere near as important for teenagers as sounding cool.
But experts are worried that today´s teenagers are even worse at talking in formal situations than previous generations were.
The language that teenagers use is nothing like as varied as you would imagine, with the twenty commonest words representing about a third of all words spoken. And if you look at younger age groups, the situation is just as worrying: children are developing speech problems more and more frequently. Children watch a lot of TV, as do adults. This creates background noise; and the noisier their surroundings, the harder it is for babies to hear conversations around them.”