15. After being gently scolded for taking a toy away from his cousin, 20-month-old Rainer lowers his eyes, hangs his head, and hides his face with his hands. Rainer is expressing .

Shame

Explanation:

Shame is the emotion that contain humiliation caused due to wrong or foolish act performed by someone.It generates distress in a person because of such behavior.The person does not want to face anyone,feels like disappearing etc

According to the question, Rainer is feeling ashamed because he perform an incorrect act by taking toy from his cousin and thus, got scolded.He is embarrassed and does not want to face people .So, he is hiding his face from others .

answer; can each be concretely realized in different ways;