Since 1978, the General Social Survey has tracked support for government intervention to reduce income inequality using the following question:
"Some people think that the government in Washington ought to reduce the income differences between the rich and the poor, perhaps by raising the taxes of wealthy families or by giving income assistance to the poor. Others think that the government should not concern itself with reducing this income difference between the rich and the poor. Here is a card with a scale from 1 to 7. Think of a score of 1 as meaning that the government ought to reduce the income differences between rich and poor, and a score of 7 meaning that the government should not concern itself with reducing income differences. What score between 1 and 7 comes closest to the way you feel?"
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Because the wording of the question has not changed since it was first asked, the survey is a valuable source of data about changes in Americans' attitudes toward the issue, which have varied little in the 36 years the question has been asked.
The General Social Survey is administered by NORC at the University of Chicago, with financing from the National Science Foundation, primarily using in-person interviewing. The GSS started in 1972 and completed its 30th round in 2014.
The typical sample size was 1,500 prior to 1994, but increased to 2,700-3,000 until 2008, and decreased to 2,000 for the most recent surveys. Resulting margins of error are between plus or minus 3.1 percentage points for the smaller sample sizes and plus or minus 2.2 percentage points for the larger sample sizes at the 95 percent confidence level. The 2014 survey was conducted March 31-Oct. 11, 2014, among 2,538 American adults. The GSS 1972-2014 Cumulative File was used to produce the statistics presented.