First and second-order logic formalizations

From researchgate: https://www.researchgate.net/post/What_is_the_actual_difference_between_1st_order_and_higher_order_logic What is the actual difference between 1st order and higher order logic? Yes, I know. They say, the 2nd order logic is more expressive, but it is really hard to me to see why. If we have a domain X, why can’t we define the domain X’ = X u 2^X and…

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The IQ Controversy, the Media and Public Policy (1988, Snyderman, Rothman)

https://www.goodreads.com/book/show/2404700.The_IQ_Controversy_the_Media_and_Public_Policy The I. Q. Controversy The Media and Public Policy Stanley Rothman 323p_0887381510   I read this becus i want to do a follow-up study like this. Both analyzing media output and doing another expert survey.   —   I had been thinking about using PCA on political questions to see any obvious underlying structure….

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New paper out: Criminality among Norwegian immigrant populations

http://openpsych.net/ODP/2014/04/criminality-among-norwegian-immigrant-populations/ Abstract A previous study found that criminality among immigrant groups in Denmark was highly predictable by their countries of origin’s prevalence of Muslims, IQ, GDP and height. This study replicates the study for Norway with similar results. Keywords: Crime, national IQ, group differences, country of origin — Download paper. Forum thread and supplementary material.

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