Anthony G. Greenwald, PhD

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last updated: January 29, 2008

WHAT'S NEW

  • 29 Jan 09: A ms. reporting a new form of the IAT, the Brief IAT, is now in press in Experimental Psychology.  It can be found near the top of my Publications by date page.  The BIAT is an efficient form of the IAT (about 1/3 number of trials as the standard) for which early findings suggest that it may prove diagnostic of single associations because of its procedural innovation of having the respondent focus on just two of the task's four categories in any block of trials.

  • 31 Dec 08: The final pre-publication draft of the in-press meta-analysis of predictive validity of the IAT is downloadable here.  Relative to the previous version of a year ago, several conclusions have been strengthened due to the inclusion of 30% more studies. The present version has a Dec 30, 2008 date, with very minor modifications from the previous (Oct 30, 2008) draft.

  • An archive of the meta-analysis of predictive validity of IAT measures is downloadable.  The archive includes full texts (mostly article pdfs) of the 122 reports included in the meta-analysis, and all files needed to reproduce the reported analyses.  Before downloading the archive (which is very large — a 95 MB zip file) please read this brief description of archive contents (11 KB pdf file). The archive itself can be found near the top of my Publications by date page.

  • 3 Oct 08:  Just-updated version of graph showing Bradley & Reverse-Bradley effects (poll-vote discrepancies) for Obama-Clinton contests in the 2008 Democrating primaries, with (a) more states, (b) more polls, and (c) weighting of polls within states that had multiple polls.  The findings are both consistent with and interestingly different from ones previously described.  Click here for the updated graph.  And here's the link to the October 9th UW press release summarizing part of what we found.

  • 30 Jul 08: Revised version of submitted ms. reporting the Brief Implicit Association Test (on Unpublished Mss. page)

  • 9 Jun 08: Some new content on the IAT validity page.

  • 13 Feb – 13 Mar 08: Reverse Bradley Effect discovered. The Democratic primaries have been most interesting, in part for the extent to which pre-election polls have been off grossly beyond their margins of error in predicting the gap between Clinton and Obama.  Over-prediction of a Black candidate is known as the Bradley Effect, after the incorrect polling prediction in 1982 that the Black mayor of Los Angeles, Tom Bradley, would comfortably win the 1982 California governship (he narrowly lost).  This year's Democratic primaries included states in which Bradley Effects occurred, but also ones in which the reverse occurred, with the difference apparently being related to varying percentages of Blacks in the states' populations.  

  • 29 Dec 07: Update of SPSS syntax for computing IAT measures using the D scoring algorithm introducted in 2003.  The update corrected some minor errors and includes some simplified description of the D measure in a small pdf file.  I regret having waited this long to make the D measure computations more accessible.  Alas, it's still not so easy.

    If you have problems accessing any of the material on this site, Please contact me. I would like to make this page broadly accessible, which means not only accommodating diverse browsers, but also accommodating diverse visitors.

    The downloadable material consists of .pdf or .zip files. To read downloaded pdf files you will need Acrobat Reader. To extract from downloaded zip (compressed) files you will need a file-decompression utility such as WinZip (now included in most operating systems).

    I am asked about the Chinese symbol at the left.  It was given to me (as a stamp) by graduate students at East China Normal University in Shanghai, when I visited there in May, 2002.  They translated it as "three clear", referring to clarity in pronunciation, expression, and thought.  They explained that they found those qualities in the presentations I gave (in English) during that visit. (Yes, of course I was pleased!)