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Released to the public seventy-two years after the information is collected.
The object that is coded in a content analysis.
Frequently cited characteristics are its volume, velocity, and variety.
Repositories of data from surveys and ethnographies.
Source of historical evidence that focuses analysis on the activities and motivations of individual actors.
Systematic description of the symbolic content of communications.
Data collected from the registration of births, deaths, marriages, and divorces.
Analytical historians usually rely on this.
Source of historical evidence produced by social systems that captures the actions of ordinary people and provides information about social structure and social change.
Allowing congressional members to edit proofs creates this problem for the Congressional Record.
Major advantage that physical evidence and other available data sources have over experiments and surveys.
Use of historical events and evidence to develop or test social theory.