1 person 20s Adolescence Adolescent Adolescents Afraid Angry Bored Boredom Caucasians Cautious College age Concentrate Concentrating Concern Dark hair Displeased Doubtful Early 20's Exhausted Eye contact Females Girls Grinning Hands under chin Head and shoulders Head shots High school age High school seniors Horizontal Individual Long hair Mad One person People Person Portraits Sad School age Serious Sleepy Solo Square Stock photo Studio Teenagers Thinking Tired Twenties Twenty years old Uncertain Unhappy Unsure Upset Vulnerable Weary Worried Worry Young adults