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Emil O. W. Kirkegaard blog

Causality, transitivity and correlation

  • Post author:Emil O. W. Kirkegaard
  • Post published:13. February 2016
  • Post category:Logic/Math/Statistics/Philosophy/R

Disclaimer: Some not too structured thoughts. It's commonly said that correlation does not imply causation. That is true (see Gwern's analysis), but does causation imply correlation? Specifically, if "→" means…

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Stereotypes are relevant for judgments about individuals even when one has individualized information

  • Post author:Emil O. W. Kirkegaard
  • Post published:9. February 2016
  • Post category:Logic/Math/Statistics

Title says it all. Apparently, some think this is not the case, but it is a straightforward application of Bayes' theorem. When I first learned of Bayes' theorem years ago,…

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Differential measurement error and regression

  • Post author:Emil O. W. Kirkegaard
  • Post published:9. February 2016
  • Post category:Math/Statistics

In reviewing our upcoming target article in Mankind Quarterly (edit: now published), Gerhard Meisenberg wrote: “One possibility that you don’t seem to discuss is that there are true and large…

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django, wsgi, apache: error 500

  • Post author:Emil O. W. Kirkegaard
  • Post published:22. January 2016
  • Post category:Programming

The problem Apache gives an error 500 (internal server error) when trying to access website running django 1.9 using wsgi based on the tutorial given at https://www.digitalocean.com/community/tutorials/how-to-serve-django-applications-with-apache-and-mod_wsgi-on-ubuntu-14-04. Running the server…

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python, virtualenv, pip and sudo/permissions

  • Post author:Emil O. W. Kirkegaard
  • Post published:21. January 2016
  • Post category:Uncategorized

The problem: To install a virtualenv (virtual environment for python) under a common (not user) folder, so that it is accessible to other users. If we try without using sudo,…

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Meta-analysis of behavioral genetic studies of Piagetian cognitive ability

  • Post author:Emil O. W. Kirkegaard
  • Post published:21. January 2016
  • Post category:Differential psychology/psychometrics/Genetics / behavioral genetics

Apparently, only a few studies have examined this question and they are not easily available. Because we obtained these, it makes sense to share our results. The datafile is on…

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Metrics for quantifying genetic cardinality of a trait

  • Post author:Emil O. W. Kirkegaard
  • Post published:19. January 2016
  • Post category:Genetics / behavioral genetics

It is common to talk about traits being monogenic or polygenic. We say that Sickle-cell disease is monogenic because its heritable variation among humans can be accounted for by a…

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Numlock problems in Virtualbox linux Mint

  • Post author:Emil O. W. Kirkegaard
  • Post published:16. January 2016
  • Post category:Programming

My situation is this: I run linux Mint from Windows 8.1 using Virtualbox. I have disabled the numlock (and the other *lock keys) in Windows by rebinding my keyboard using…

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Linguistics paper (for class): Typology and statistics

  • Post author:Emil O. W. Kirkegaard
  • Post published:13. January 2016
  • Post category:Linguistics/language/Math/Statistics

This may have some interest. Basically, typologists cannot into statistics and it shows. On the other hand, it means there is a large number of low hanging fruit for someone…

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General model for immigrant group traits and outcomes

  • Post author:Emil O. W. Kirkegaard
  • Post published:4. January 2016
  • Post category:Differential psychology/psychometrics/Sociology

(Broad-strokes modeling of how to think about immigrant performance. Some references are gone because they were written using the Zotero plugin, which I later uninstalled. I have re-added those I…

Continue ReadingGeneral model for immigrant group traits and outcomes
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