Author Note

    G. Scott Acton, Langley Porter Psychiatric Institute, University of California, San Francisco; William Revelle, Department of Psychology, Northwestern University.

    This article is based on G. Scott Acton's doctoral dissertation at Northwestern University. Work on this article was supported in part by a fellowship from the National Science Foundation to G. Scott Acton. We are grateful to J. Michael Bailey, Kevin L. Delucchi, Michael B. Gurtman, and Richard E. Zinbarg for helpful comments on earlier versions of the article.

    Correspondence concerning this article should be addressed to G. Scott Acton, Langley Porter Psychiatric Institute, University of California, San Francisco, Box 0984-TRC, 401 Parnassus Avenue, San Francisco, CA 94143-0984, acton@personalityresearch.org.

    This article is copyright © 2002 G. Scott Acton and is an unedited version of a published article. Please do not quote or otherwise take ideas from this article without proper citation--and please do not cite the on-line version. All citations should be to the printed version: Acton, G. S., & Revelle, W. (2002). Interpersonal personality measures show circumplex structure based on new psychometric criteria. Journal of Personality Assessment, 79, 456-481.

Footnotes

  1. Because the Gap Test was especially sensitive to number of variables, a further simulation was conducted on the Gap Test using a wider range in number of variables (8, 16, 32, 64, and 128).
  2. Elsewhere (Acton, 1999) VT is referred to as VT2. The omission of VT1 due to insufficient power, however, justifies the simplified notation.
  3. Deviation scoring is often called ipsatizing, but this latter term is ambiguous, because it could mean either deviation scoring or z-scoring. Deviation scoring within each participant (as used herein) should also be distinguished from deviation scoring within each variable (not used). The effect of deviation scoring differs from that of z-scoring in that deviation scoring does not correct for extreme values, whereas z-scoring does. To the extent that there are few extreme values, the two procedures should have similar effects.
  4. We would like to thank Clarence C. McCormick for making these data available. McCormick and Goldberg (1997) reported previous analyses of these data.
  5. We would like to thank Lewis R. Goldberg for making these data available. Goldberg (1982) and Wiggins (1979) reported previous analyses of these data.
  6. We would like to thank Michael B. Gurtman for making these data available. Gurtman (1995), Haslam and Gurtman (1999), and Tracey et al. (1996) reported previous analyses of 1,093 of these cases. Gurtman (1992b, 1993) reported previous analyses of a much smaller subset. Gurtman and Balakrishnan (1998) reported previous analyses of 1,981 cases, including the present sample.

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