Memory Social aspects 186 History 136 Collective memory 53 Historiography 45 Psychological aspects 45 Political aspects 41 Brain 39 Influence 33 Physiological aspects 29 Social conditions 26 Learning, Psychology of 24 Research 22 Learning 21 Philosophy 21 Mnemonics 20 Study skills 20 Psychology 19 Cognition 18 Social life and customs 18 Recollection (Psychology) 17 War and society 17 Holocaust, Jewish (1939-1945) 16 African Americans 15 Race relations 15 Memory disorders 14 Politics and government 14 Civilization 13 Physiology 13 Group identity 12