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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.
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.
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.
Repositories of data from surveys and ethnographies.
Systematic description of the symbolic content of communications.
Source of historical evidence that focuses analysis on the activities and motivations of individual actors.
Frequently cited characteristics are its volume, velocity, and variety.
Data collected from the registration of births, deaths, marriages, and divorces.