In a 11-year old post I showed that the use of p-value misleads researchers about the conclusion in different ways: model selection, test bias, disregard for the power of the statistical test, disregard for the improved power in meta-analysis.| menghu.substack.com
In this book, Richard D. Fuerle (2008) first rigorously expounded upon the evolutionary principles and then provided evidence that Africans lack many essential modern traits, and finally that the Out of Africa (OoA) theory is flawed| menghu.substack.com
The Classical Twin Design (CTD) has always been criticized for being oversimplistic, and consistently overestimating heritability estimates due to not accounting for GxE, GxG, rGE and equal environmental effects.| menghu.substack.com
A recent article by Samorodnitsky and co-authored by two renowned censorship champions, namely, Kevin Bird and Rebecca Sear, requests that all published papers that have ever used Lynn & Vanhanen (2006) national IQs (or subsequent, revised version, up to Becker & Lynn,| menghu.substack.com
There are convenient ways researchers can collect IQ scores and correlate the observed scores with measures of self-reported health, socio-economic attainment, personality or political views. In platforms such as Prolific or MTurk, participants make money in their spare time by completing tasks. Designing a test that displays both a high loading on the general factor of intelligence, while avoiding measurement bias and bad quality data from online participants, is quite a challenging task.| menghu.substack.com
The OLS regression is a widely applied technique, and many variants of the classical regression exist.| menghu.substack.com
Orlich & Gifford (2006) published an analysis that shows high correlation between parental income and SAT scores.| menghu.substack.com
While it is well known that free trade promotes prosperity for all, as Krugman explained in his book, a less known theory and yet by far the strongest case for protectionism is the infant industry argument.| menghu.substack.com
After the global financial crisis in 2008-2009, the global debt increased substantially and was mainly driven by governmental and nonfinancial corporate debt.| menghu.substack.com
As reviewed in my previous article, the majority of studies on measurement bias, either on the item- or subtest-level, reached an agreement about the fairness of IQ test.| menghu.substack.com
The most important studies on internal test bias with respect to racial groups in the item-level, subtest-level and construct-level are reviewed. The proposed causes will be discussed. Generally, the most commonly used IQ tests aren’t biased or only minimally biased as to be of no practical value.| menghu.substack.com
