Ключевые слова: 10 to 11 years, 1011 years, 12 to 13 years, 1213 years, blue, boy, boys, caucasian ethnicity, child, childhood, day, earphones, enjoyment, friendship, fun, happiness, headphones, hearing, high angle view, holding, january 2015 release, listening, male, music, numeral, only boys, orthographic symbol, outdoors, personal mp3 player, preadolescent boy, preadolescent child, relationship, shirt, smiling, symbol, togetherness, tshirt, two people, using, wearing, wellbeing,