From the publishers:
http://www.conference-board.org/economics/consumer.cfm
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[excerpted]
Consumer Confidence Survey Methodology
"The Consumer Confidence Survey is conducted for The Conference Board by TNS as a mail survey.
The questionnaires are mailed on the first of the month to a nationwide representative sample of 5,000 households. Samples are representative based on key demographics and geographics as defined by the U.S. Census Bureau.
The Index is based on responses to 5 questions included in the survey:
For each of the 5 questions, there are three response options: POSITIVE, NEGATIVE and NEUTRAL.
1. Respondents appraisal of current business conditions.
2. Respondents expectations regarding business conditions six months hence.
3. Respondents appraisal of the current employment conditions.
4. Respondents expectations regarding employment conditions six months hence.
5. Respondents expectations regarding their total family income six months hence.
The response proportions to each question are seasonally adjusted.
For each question, the average RELATIVE for the calendar year 1985 is then used as a benchmark to yield the INDEX value for that question.
The Indexes are then averaged together