The Bell curve book and Jensen paper controversy was not about g factor or IQ score. It was about perception of individual and common group capacity as human beings. Whenever there is a hierarchical judgement based on limited measures of capacity there is going to be a pushback. Measuring just intelligence without including other capacities invites pushback. A smarter approach to the Bell Curve chapter 10 would have been in placing IQ score in context with capacities separate from IQ. Then any racist claims would have sounded hollow. One capacity different from IQ is stamina.,(reply>), @stefan okuoimose please provide your evidence sources,(reply>), Iq is the most reliable metric but attempts of forming sociocultural human categorisations by race make no sense cos you can’t put an ethnographic with more than 3k distinct ethnic groups with 6x the genetic diversity into one category, you would hv to make every other variable that contributed to iq (like health and socioeconomic factors I.e as highlighted by the Flynn effect) exogenous. For example black Americans are the lowest academically in the us, in the UK west Africans are just under Indians and above whites. But whites are above Caribbeans. The common denominator is that descendants of slaves who where bred by their owners a certain way do way worse than average.,(reply>), Except IQ is the best metric for success we have, ‘stamina’ is not.