Ключевые слова: adult, affirmative, agree, agreeable, agreement, approval, approve, caucasian, cheerful, confidence, confident, content, contentment, encouragement, endorsement, expression, feedback, gesture, glasses, grateful, hand signal, happiness, happy, human, joy, like, male, man, optimistic, person, pleased, positive, positivity, satisfaction, smiling, success, support, thumbs up, young,