Metrics for quantifying genetic cardinality of a trait
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…
Numlock problems in Virtualbox linux Mint
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…
Linguistics paper (for class): Typology and 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…
General model for immigrant group traits and outcomes
(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…
Useful Twitter extensions for Firefox
I often share material on Twitter when I find something interesting. This is the primary purpose of Twitter for me: share and find interesting links. Right now, the process is…
A better online public platform for discussing scientific papers? A Reddit-based proposal
In a recent post, Steve Hsu writes: It's a shame that we don't have a better online platform (e.g., like Quora or StackOverflow) for discussing scientific papers. This would allow…
R: fastest way of finding out of all elements of a vector are identical?
There is a question on SO about this: http://stackoverflow.com/questions/4752275/test-for-equality-among-all-elements-of-a-single-vector But I was a bit more curious, so! #test data, large vectors v1 = rep(1234, 1e6) v2 = runif(1e6) #functions to…
R: assign() inside nested functions
Recently, I wrote a function called copy_names(). It does what you think and a little more: it copies names from one object to another. But it can also attempt to…
Intelligence 34 (2006): Climate and general intelligence, mini special issue
This was an exchange between researchers that took place in 2006 in the academic journal Intelligence (34). Templer, D. I., & Arikawa, H. (2006). Temperature, skin color, per capita income,…
kirkegaard: conditional recoding with conditional_change()
Usually working with large public datasets requires that one recode variables. This can be quite repetitive. When variables only have a few possible values, one can use something like plyr's…
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