Social and emotional aspects of schooling and the learning environment can dramatically affect one's attention, understanding, and memory for learning. This topic has been of increasing interest in both psychology and education, leading to an entire section being devoted to it in the third edition of the International Encyclopedia of Education. Thirty-three articles from the Encyclopedia form this concise reference which focuses on such topics as social and emotional development, anxiety in schools, effects of mood on motivation, peer learning, and friendship and social networks.