Oct09-knowledge.zip

Sample size: N=1,002 adults.

Dates: October 1–4, 2009.

Mode: Telephone survey (landline + cell phone, including cell-only households).

Weights: Use the WEIGHT variable for all analyses.

Privacy: ZIP code, county, and phone numbers removed.

Geographic variables: Based on respondents’ self-reported ZIP codes (or sample info when unavailable).

Omnibus survey: Question numbers in questionnaire/topline differ from SPSS variable names (mapping provided).

Knowledge scale: Constructed from 12 quiz-style items on politics, policy, economics, and public figures.

Syntax provided: Computation of a 12-item knowledge index (know12) from individual correct responses.