Ключевые слова: 20s, assessment, background, blonde hair, caucasian, chair, chinese, college, concentrate, concentrated, concentrating, concentration, desk, dozing, education, exam, examination, female, hand, indoors, information, institute, institution, looking away, male, man, mixedrace, napping, paper, part of, pen, pencil, sitting, sleeping, student, students, test, tests, thinking, university, woman, work, working, writing, young adult,