Only one survey question spans the pre- and post-Civil-Rights eras

Evidence

The key drawback to restricting ourselves to the cumulative file is that its one question on racial attitudes that spans our two periods provides only a single pre-period year. We thus explore the viability of adding additional data from the individual year files, even though ANES did not deem these questions sufficiently comparable. The closest candidate is a question asked in 1956, 1958 and 1960. — Ilyana Kuziemko and Ebonya Washington, Why Did the Democrats Lose the South?…, 1328

Categorization

• QUESTION: Raises how seriously measurement scarcity constrains testing the threatened-privilege conversion temporally — worth chasing what data could extend the pre-period.
• XREF: connects to: Gallup public-opinion data on civil-rights salience are scattered and inconsistently coded across surveys — Ilyana Kuziemko and Ebonya Washington, Why Did the Democrats Lose the South?…, 1139