4-5 years old 5-6 years old Afraid Angry Annoyed Apprehensive Arguing Argument Asian Bashful Brothers Cautious Child photography Children only Companion Companionship Concentrate Concentrating Concern Conflict Connections Contemplate Dark skin Defiant Disagree Disagreement Diversity Doubtful Elementary age Ethnic groups Ethnicity Facial Families Family Five years old Four years old Friendly Friends Friendship Frowning Grimace Interactions K through 6th grade Kindergarten Minority groups Misunderstanding Pensive People People of color Person Photographs Pictures Portraits Preschoolers Profile Sad School age Serious Shyness Siblings Sibs Side view Six years old Smirk Stock photo Studio Sulking Thinking Timid Uncertain Uncomfortable Under 5 Uneasy Unhappy Unsure Upset Vulnerable Worried Worry