Ключевые слова: 15 years old, 16 years old, 17 years old, 18 years old, african american, asian, black, boy, breaktime, campus, caribbean, caucasian, cell, cellphone, close up, college, computer, connected, digital tablet, education, female, girl, group, horizontal, indoors, laptop, male, mixed race, mobile, mobile phone, multicultural, multiethnic, online, people, person, school, seating, six people, social media, socializing, student, techno, technology, teen, teenage, teenager, together, uk, university,