Teenagers have been warned they are becoming unemployable because they use a vocabulary of just 800 words. The limited linguistic range also consists of many made up words and 'teenspeak' which has developed through modern communication methods such as text messaging and social networking sites. Today Jean Gross, who advises the Government on children's speech, said urgent action was required to prevent children failing to find jobs because they are unable to communicate. Mrs Goss, who last week issued a stark warning over the effect of television on children's development said yesterday: 'Teenagers are spending more time communicating through electronic...