Durkheim (1951, original edition 1897) also introduced the term anomie into sociological literature to describe a loss of direction felt in a society when social control of individual behavior has become ineffective. Anomie is a state of normlessness that typically occurs during a period of profound social change and disorder, such as a time of economic collapse. People become more aggressive or depressed, and this results in higher rates of violent crime and suicide. Since there is much less agreement on what constitutes proper behavior during times of revolution, sudden prosperity, or economic depression, conformity and obedience become less significant as social forces. It also becomes much more difficult to state exactly what constitutes deviance.