What is an IQ map and can we trust them?

This podcast investigates the accuracy of an online map depicting countries' average IQ scores, revealing significant methodological flaws. The hosts interview a biostatistics PhD student and a science journalist who debunk the map's claims, highlighting the use of unreliable data sources such as small, biased samples (e.g., children in a Spanish home for the developmentally delayed representing Equatorial Guinea's IQ). The experts emphasize the significant influence of factors like malnutrition and language barriers on test results, concluding that the map's racial interpretations are unfounded. The podcast cautions listeners against accepting such data without critical evaluation of its methodology and potential biases. The lack of a universal, standardized IQ test across countries further undermines the map's validity.