>>2628868You can find ample empirical evidence for what I'm writing by reading Michael Roberts' articles, which also include other heterodox economists. Furthermore, those who use MMT theories are opportunists seeking to co-opt the masses for class conciliation; therefore, they will be punished as enemies along with Keynesians and neoclassical economists.
Starting with Shaikh and continuing with Cockshott & Cottrell, multiple studies using input e output tables show high correlations between labour values (measured in socially necessary labour time) and market prices / prices of production. These results hold across countries, time periods, and datasets. The point isn’t that prices equal values one-to-one, but that labour-time is the dominant explanatory factor once competition, equalisation of profit rates, etc. are accounted for.
Michael Roberts summarizes and defends this literature explicitly in “Marx’s Law of Value: A Debate Between David Harvey and Michael Roberts” (2018), where he directly cites this empirical work and explains why correlation, at the aggregate level, is exactly what Marx’s theory predicts.
https://thenextrecession.wordpress.com/2018/04/02/marxs-law-of-value-a-debate-between-david-harvey-and-michael-roberts/The law of value isn’t just about prices; it governs profitability, accumulation, and crises. Roberts has spent years compiling empirical evidence showing long-term trends in the rate of profit that align with Marx’s predictions. His recent post “Marx’s law of profitability – yet more evidence” (2024) reviews new empirical work distinguishing productive from unproductive sectors and again finds results consistent with Marxian value theory.
This is crucial: mainstream theories struggle to explain long-term profitability trends without ad hoc assumptions, while value theory predicts them structurally.
https://thenextrecession.wordpress.com/2024/01/23/marxs-law-of-profitability-yet-more-evidence/Roberts’s presentation “The Labour Theory of Value: The Evidence” pulls together decades of empirical studies, price e value correlations, profit-rate measurements, and input e output analyses, showing that the law of value isn’t a metaphysical claim but a theory with observable regularities.
https://thenextrecession.files.wordpress.com/2017/11/hm-london-november-2017.pptxContemporary capitalism, global trade, and value transfer
In Capitalism in the 21st Century: Through the Prism of Value (Roberts & Carchedi), Marx’s value theory is applied empirically to modern capitalism: global value transfers, imperialism, productivity differentials, financialisation, and ecological breakdown. These aren’t abstract exercises — they use real data to show how value created by labour is redistributed internationally.
https://arxiujosepserradell.cat/wp-content/uploads/2025/11/Capitalism_in_the_21st_Century_Through_the_Prism_of_Value_Guglielmo.pdfRoberts’s more recent post “The Frontiers of Value” extends this discussion, emphasizing empirical work on value transfers, international trade, and the continuing relevance of labour-time as the substance of value, even in highly financialised and globalised capitalism.
https://thenextrecession.wordpress.com/2025/10/03/the-frontiers-of-value/