Ключевые слова: academic, adolescence, bonding, boy, casual clothing, caucasian, cellphone, cheerful, child, classmate, closeness, communication, connection, corridor, development, education, enjoyment, female, friend, friendship, fun, girl, hallway, happy, holding, joy, knowledge, leisure, lifestyle, male, mixedrace, mobile phone, modern, phone, school, schoolboy, schoolgirl, secondary, smartphone, smiling, standing, student, teenage, teenager, text message, text messaging, texting, together, touchscreen, typing, using, wireless technology, youth,