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…

Continue ReadingIs the summed cubes equal to the squared sum of counting integer series?

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…

Continue ReadingDoes conscientiousness predict PISA scores at the national level? A cautious meta-analysis

New paper out: Crime, income, educational attainment and employment among immigrant groups in Norway and Finland

http://openpsych.net/ODP/2014/10/crime-income-educational-attainment-and-employment-among-immigrant-groups-in-norway-and-finland/ Abstract I present new predictive analyses for crime, income, educational attainment and employment among immigrant groups in Norway and crime in Finland. Furthermore I show that the Norwegian data…

Continue ReadingNew paper out: Crime, income, educational attainment and employment among immigrant groups in Norway and Finland

Causal effect of education on IQ scores using the discordant twin design?

Recently, the twin-control design has been used to test causal models (e.g. exercise→happiness, exercise→¬depression/anxiety symptoms, casual sex→depression/suicidal thoughts). The theory is simple. Suppose we do a standard cross-sectional design study…

Continue ReadingCausal effect of education on IQ scores using the discordant twin design?