I had not seen that error before, but I did run across a similar error with V085103x that has now been corrected.
The 2008 pre-post errata page shows there were several coding and labeling problems that year. We should all be as careful as your student:
http://www.electionstudies.org/studypages/2008prepost/2008prepost_errata.htm
Best,
John T.
--
John Transue
Associate Professor
Department of Political Science
Institute for Legal, Legislative, and Policy Studies
University of Illinois at Springfield
[log in to unmask]
217-206-8383
On Feb 17, 2012, at 2:16 PM, Paul Gronke wrote:
> Hey all! A student came to me today who trusted his instincts and not the mathemagic of a survey, and I think he has discovered a miscoding in the 2008 NES.
>
> He is using the SDA Archive version of the dataset at Berkeley. He was examining vote choice against "V085188b", an 11 point "Dislike / Like" measure for Obama.
>
> The results struck him as bizarre; the more a respondent said the liked Obama, the LESS likely they were to vote for Obama.
>
> The variable correlates at a -.50 with V083037a, which is the "Feeling Thermometer: Democratic Presidential Candidate."
>
> I can only assume that V085188b is coded in reverse somewhere, either by NES or when placed into SDA. Besides giving the student an A for effort, I'm wondering if anyone else has seen this?
>
> Thanks!
>
> ---
> Paul Gronke Ph: 503-517-7393
> Fax: 734-661-0801
>
> Professor, Reed College
> Director, Early Voting Information Center 3203 SE Woodstock Blvd.
> Portland OR 97202
>
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