Beautiful nonsense
In a comment on research of psychedelics, I found this gem: .Your brain is a matrix that is dispensing substances known as neurotransmitters which don't actually transmit anything but rather…
W values from the Shapiro-Wilk test visualized with different datasets
For a mathematical explanation of the test, see e.g. here. However, such an explanation is not very useful for using the test in practice. Just what does a W value…
New paper out: The personal Jensen coefficient does not predict grades beyond its association with g
Found null results for a proposed metric (actually two). In the spirit of publishing failed ideas, I wrote this up. Abstract General intelligence (g) is known to predict grades at…
Meisenberg’s new book chapter on intelligence, economics and other stuff
G.M. IQ & Economic growth I noted down some comments while reading it. --- In Table 1, Dominican birth cohort is reversed. “0.70 and 0.80 in world-wide country samples.…
Is the summed cubes equal to the squared sum of counting integer series?
https://twitter.com/standupmaths/status/524470545199673344 R can tell us: DF.numbers = data.frame(cubesum=numeric(),sumsquare=numeric()) #initial dataframe for (n in 1:100){ #loop and fill in DF.numbers[n,"cubesum"] = sum((1:n)^3) DF.numbers[n,"sumsquare"] = sum(1:n)^2 } library(car) #for the…
Jeffrey Beall’s anti-open access tirade
I came across this one. On the one hand it seems written in a serious tone. On the other hand, the claims are so ridiculous that it is hard to…
Cancer rates: Part 2, does alcohol consumption have incremental predictive power?
Same guy proposed another idea. Wikipedia has data here. However, since i had previously seen that people fudge data on Wikipedia articles (e.g. this one), then maybe it was not…
Cancer rates and life expectancy?
An online acquaintance asked me me to find data about these two and look for a relationship. It stands to reason that if you have a country where people die…
Does conscientiousness predict PISA scores at the national level? A cautious meta-analysis
Just a quick write-up before I write up a paper with this for ODP. Introduction Altho general cognitive ability (g) has received the most attention by differential psychologists, personality receives…
International general factor of personality? yes, but…
I merged the dataset from Schmitt et al (2007)'s paper about OCEAN traits in 56 countries with the rest of the megadataset. Then i extracted the first factor of the…
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