The Costs of Ethnic Diversity with Garett Jones

Episode Summary

Executive Summary: Garrett Jones argues that the empirical literature generally finds ethnic diversity raises coordination costs, lowers trust and morale, and often reduces firm productivity and support for public goods. He distinguishes ethnic diversity from birthplace and gender diversity, notes high-human-capital settings may offset costs, and extends the argument to institutions, public debate, and immigration policy.

Main Topics: Ethnic diversity as a coordination cost (Priority: 5/5): Jones says the broad research pattern is that ethnic diversity tends to increase conflict, reduce morale, and raise the marginal costs of teamwork and production across organizations. Firm productivity and worker well-being (Priority: 5/5): He emphasizes management and HR studies showing lower morale and weaker performance in ethnically diverse workplaces, with productivity effects often negative on average. Trust, social capital, and experimental evidence (Priority: 5/5): He uses dictator, trust, and public goods games to show that ethnically mixed groups often exhibit lower trust and weaker cooperation, even in elite samples. Institutions and national prosperity (Priority: 4/5): Jones extends the argument to government quality, citing research linking ethno-linguistic fractionalization to weaker rule of law and harder collective governance. Exceptions: high human capital, birthplace, and gender diversity (Priority: 4/5): He argues that diversity costs may be lower or reversed in highly skilled settings, and that birthplace diversity and gender diversity do not show the same consistent negatives as ethnic diversity. Immigration, multicultural governance, and policy tradeoffs (Priority: 4/5): He connects the literature to debates over immigration, Brexit, redistribution, and social cohesion, arguing high-skill immigration may mitigate some costs. Public debate versus academic findings (Priority: 3/5): Jones contrasts the slogan 'diversity is our strength' with research showing average costs, suggesting public discourse often ignores the empirical pattern or uses moralized language.

Key Arguments: The research literature across management, economics, and experimental games is broadly consistent: ethnic diversity often reduces trust, morale, and productivity. Ethnic diversity appears to function like a tax on coordination, raising marginal costs for firms and governments. Public claims that diversity is always beneficial are too broad; the evidence suggests benefits in some settings but negative average effects in many others. High human capital can mitigate diversity costs because smarter or more educated teams adapt more easily and may better exploit diverse perspectives. Birthplace diversity may be different from ethnic diversity and can sometimes increase productivity by bringing varied ideas without the same trust penalties. Gender diversity does not show the same unambiguous negative pattern as ethnic diversity, implying the effect is not simply 'difference' in general. Ethnic diversity can weaken social capital, making people less willing to support public goods and potentially smaller or less effective government. Political backlash to immigration and diversity, such as Brexit, may reflect difficulty sustaining inclusive governance in more diverse societies. If diversity genuinely increased profits substantially, firms would adopt it voluntarily without needing mandates or training programs. A more promising immigration strategy, if diversity is desired, is selecting for high-human-capital migrants who can offset coordination costs.

Data Points: Williams and O'Reilly literature review: 40 years of research (review published in 1996) - Management/HR review on diversity and organizational performance Harvard undergraduate trust experiment: 35% Asian sample - Glazer-coauthored experimental study mentioned as evidence on trust and ethnicity Support for diversity training: Harvard Business Review cover story last month - Cited as evidence that diversity training is costly and often ineffective School integration timeline: 1970s and 1980s - Period when U.S. courts heavily micromanaged school desegregation Britain and Brexit: 30% - Share of Leave vote polling as mainly motivated by immigration, according to the interviewer Immigration policy example: 2009 - Year Jason Richwine's essay 'A Smart Solution to the Diversity Dilemma' was published Ethno-linguistic fractionalization: Negative relationship with rule of law - Referenced from Bill Easterly's social cohesion/institutions/growth work Public goods literature: Described as highly robust - Jones cites repeated findings that higher diversity lowers support for public goods and redistribution

Pivotal Quotes: "Ethnic diversity seems to be, broadly speaking, a tax on firm performance." — Garrett Jones: Summarizing the main empirical takeaway from management and economics research "Diversity is a high marginal cost business activity." — Garrett Jones: Explaining why firms often need diversity management and training "Higher human capital may be a way to overcome the cost of diversity." — Garrett Jones: Describing the main exception where diversity costs may be reduced

Implications: Listeners should expect debates on immigration, workplace policy, and institutional design to hinge on coordination costs, not just ideals. If Jones is right, the best offset is selective high-skill migration and smarter integration, especially in complex organizations and governments.