ClaimsTyler Cowen

“Most other theories of growth rates, for instance those that assign a predominant weight to institutions, predict much more serial correlation of growth rates than we find in the data.”

Tyler Cowen, blogger 6 December 2025 Two things that really matter (Marginal Revolution)

Factual Economics and markets

Growth theories giving predominant weight to institutions predict much more serial correlation of growth rates than is found in the data.

Mostly true True in substance, wrong in a detail.

Factual: Statements about the present or the past, checked against the record: did they hold up?

What would count as true or false

True: the empirical literature (for example Easterly, Kremer, Pritchett and Summers 1993 and later work) shows that growth rates have low persistence across decades, while institutions, which are persistent, would imply higher serial correlation of growth than is observed, and this tension is recognised in the growth literature. Mostly true: low persistence of growth is well established and the tension with institutions-based theories is widely noted, but institutionalist theories can partly accommodate it (for example through level effects or changes in institutions). Mixed: growth persistence is low, but whether institutional theories actually predict high serial correlation is substantially contested. Mostly false: the claim overstates the case, for example if growth persistence is shown to be moderate, or if institutional theories plainly predict level effects rather than persistent growth rates. False: the data show high serial correlation of growth rates consistent with institutional theories.

Set before the research began.

Evidence (4)

  1. E1 Good Policy or Good Luck? Country Growth Performance and Temporary Shocks National Bureau of Economic Research (NBER Working Paper 4474) · September 1993

    “However, growth rates are highly unstable over time, with a correlation across decades of .1 to .3, while country characteristics are stable, with cross-decade correlations of .6 to .9.”
  2. E2 Good Policy or Good Luck? Country Growth Performance and Temporary Shocks (working paper PDF) NBER Working Paper Series · September 1993

    “Models in which country characteristics determine long-run growth can be reconciled to these facts only if they generate spurts in growth or if there are large random shocks.”
  3. E3 Rapid growth in emerging markets and developing economies - CEPR VoxEU / CEPR · 12 September 2014

    “It is well known, from the seminal work of Easterly et al. (1993), that what the economics profession considers as the most likely “fundamental” determinants of economic growth (such as institutional quality, education, and macroeconomic policies) are persistent, whereas economic growth itself is not.”
  4. E4 Institutions as the Fundamental Cause of Long-Run Growth NBER Working Paper 10481 (Acemoglu, Johnson, Robinson) · May 2004

    “This paper develops the empirical and theoretical case that differences in economic institutions are the fundamental cause of differences in economic development.”

Reasoning

E1 (Easterly et al. 1993) reports that growth rates correlate only about .1 to .3 across decades, while country characteristics correlate .6 to .9. E3 says it is well known that likely fundamental determinants such as institutional quality are persistent while growth is not. This supports both the low persistence of growth and the recognised tension with institutions-based theories. However, E2 notes that such models can be reconciled with these facts through growth spurts or random shocks, and E4 frames institutions as explaining differences in development levels. That fits the 'mostly true' criterion: institutionalist theories can partly accommodate low growth persistence.

Cite this claim

Tyler Cowen, “Growth theories giving predominant weight to institutions predict much more serial correlation of growth rates than is found in the data.” (said 6 December 2025). Verdict: mostly true. Reliability API, claim c_dc8b3ef286fe, method 0.1.0+c876030c, dataset release v1.1.2. https://epistacklabs.com/claims/c_dc8b3ef286fe

This claim is in dataset release v1.1.2, with the same verdict.

Reply to this claim

For Tyler Cowen, or someone speaking for them: a correction or counter-evidence. Replies are read before anything is shown; an approved reply shows your name, role, date, statement and link. Your email address is never shown and is deleted 30 days after the decision (privacy).

More factual claims by Tyler Cowen

  1. Mostly false Factual 4 March 2026
    “The World Bank seems weaker in relative terms, more displaced by private capital markets.”

    The World Bank seems weaker in relative terms, more displaced by private capital markets.

  2. Mostly true Factual 4 March 2026
    “There are some startups, but they’re not significant.”

    In the university sector there are some startups, but they are not significant.

  3. Mostly true Factual 12 January 2026
    “He has a new book *How Africa Works*”

    Joe Studwell has a new book titled How Africa Works.

  4. Mixed Factual 6 December 2025
    “Both #1 (brain drain) and #2 have taken a hit in recent times.”

    The UK's human capital (through brain drain) and its matching of market demands have both declined in recent times.

  5. Mostly false Factual 6 December 2025
    “They are also, in my view, the biggest reasons why the UK currently is in economic trouble.”

    In Cowen's view, weak human capital and mismatch with market demand are the biggest reasons the UK is currently in economic trouble.

All of them

Verdicts are made automatically; how verdicts are made.