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Traces changes over time by repeatedly asking questions of the same individuals.
To study relationships among social actors, every person in the group is surveyed.
The object is to convince persons in the sample to participate in the survey.
Systematic measurement error associated with question wording or characteristics of respondents and interviewers.
May be used to reach different sets of respondents or to ask different types of questions.
This survey mode takes the least time but also requires the simplest questions.
Traces changes over time by asking questions of independent samples of the same target population.
The most costly survey mode.
The most common survey design.
Automates data collection by prompting introductions to questions, skipping irrelevant questions, and entering data directly into a computer file.
The least expensive survey mode, which also tends to have the lowest sample quality.
Questionnaire form used by an interviewer.