Ключевые слова: academic, adolescent, alone, anxious, boy, casual, caucasian, challenge, classroom, concentration, contemplation, daytime, desk, education, frustration, grey, hoodie, indoors, learning, male, overwhelmed, pensive, problem, red, reflective, sadness, school, seating, serious, stress, student, study, teenager, thinking, thoughtful, window, worried, youth,