Doing a lot of background reading on animal ecology, I found this review paper: Lefebvre, L. (2013). Brains, innovations, tools and cultural transmission in birds, non-human primates, and fossil hominins. Frontiers in human neuroscience, 7, 245. Recent work on birds and non-human primates has shown that taxonomic differences in field measures of innovation, tool use […]

Miron Zuckerman is updating his meta-analysis of the religion and intelligence relationship, and asked me to compute some extra analyses of the OKCupid dataset. Results: Main findings Cognitive ability is independent cause of the usual demographics. Distribution of cognitive ability by religious stance x seriousness. Error bars = 95% confidence intervals. Gays more religious […]

It has been noted that East Asians are positive outliers for the latitude ~ IQ pattern, they’re too far south for their high IQs. Some possible reasons for this are: The peoples evolved further north and migrated south in recent times, and their intelligence level is related to their recent origin, not current location, just […]

Most environmentalists have by now given up denying the existence of racial gaps in head size, but they only retreated a few yards: Nisbett, R. E., Aronson, J., Blair, C., Dickens, W., Flynn, J., Halpern, D. F., & Turkheimer, E. (2012). Intelligence: new findings and theoretical developments. American psychologist, 67(2), 130. Brain size and IQ. […]

There’s an interesting slide in Rindermann’s survey: Rindermann, H. (2013). 2013 survey of expert opinion on intelligence. International Society for Intelligence Research, ISIR 2013 List of surveys here James Thompson’s previous coverage I’ve edited it to be in a single image (from 3). Do we have an estimate of relative media left-wingness for these? Some […]

There’s an interesting study making the rounds on Twitter: Great new study: In 2002, 1200 Nepalese pregnant women were randomly assigned to receive micronutrient supplements or not. Experimental children had heavier birthweights. Now, at age 12, there was no difference in Intelligence. @Shine_Daizy @marcelleprost — John Protzko (@JProtzko) March 8, 2018 Dulal, S., […]

Someone sent me some questions on this study: Fagan, J. F., & Holland, C. R. (2007). Racial equality in intelligence: Predictions from a theory of intelligence as processing. Intelligence, 35(4), 319-334. African-Americans and Whites were asked to solve problems typical of those administered on standard tests of intelligence. Half of the problems were solvable on […]

There is a popular claim in White Nationalist circles that Jews have been involved in the suppression of IQ and race related research. They can list persons like: Leon Kamin, old school heritability denialist, co-author of The Science and Politics of IQ (1974) and Not in Our Genes (1984) Steven Jay Gould, author of infamous […] How far should the net be cast as regards intellectual achievements? I suggest as far and wide as possible, or it will be assumed that some results are being held back. I favour those achievements which are in a “universal language” like maths, science and chess. There will always be some doubt about whether […]