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Background of data set in OpenMx

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Picture of user. wuhao_osu Joined: 09/07/2010
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I can see several twin data sets that come with OpenMx, for example, the DZO data described by following page:

http://openmx.psyc.virginia.edu/docs/OpenMx/latest/_static/Rdoc/dzoData.html

Would anyone please provide more background about this data? The sample size seems to indicate that it is not simulated data, but no descriptions are given for the variables.

I would appreciate it. Thanks.

Replied on Sun, 02/08/2015 - 17:41
Picture of user. tbates Joined: 07/31/2009

The BMI dataset is documented and referenced.

?twinData
Not sure about the others...

Martin, N. G. & Jardine, R. (1986). Eysenck's contribution to behavior genetics. In S. Modgil & C. Modgil (Eds.), Hans Eysenck: Consensus and Controversy. Falmer Press: Lewes, Sussex.

Martin, N. G., Eaves, L. J., Heath, A. C., Jardine, R., Feindgold, L. M., & Eysenck, H. J. (1986). Transmission of social attitudes. Proceedings of the National Academy of Science, 83, 4364-4368.

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Replied on Sun, 02/08/2015 - 22:34
Picture of user. wuhao_osu Joined: 09/07/2010

I just did some search and can see "ETC88.R" in the description of this data set refers to an R code written by Hermine, but no background of the data is given there except that they are used to estimate Extended Twin-kinship Correlations. Anyone here knows more about the background?

Thanks for pointing to the BMI data set.

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