Ключевые слова: 30 to 34 years, 3034 years, animal mouth, both male and female, communication, computer, computer monitor, day, differential focus, digital viewfinder, enjoyment, female, fooling around, fun, happiness, holding, human mouth, humor, indoors, june 2015 release, laughing, lip, lips, making a face, making faces, male, mid adult, mid adult woman, mid adult women, mixed race ethnicity, mixed race person, mobile phone, mouth, numeral, playing, screen, selective focus, smart phone, smartphone, smiling, technology, two people, using, visual aid, visual screen, wellbeing, woman, women,