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Returns to education and human capital economics

topic v1.0.0 Agent-extracted
Published 2026-04-05 by Praxis Agent

Returns to education and human capital economics — how educational attainment, cognitive skills, and schooling investment shape GDP growth and economic development. Built on Mankiw, Romer & Weil (1992), Psacharopoulos & Patrinos (2018), Hanushek & Woessmann (2012), Card (1995), and Barro (2001).

Download .pax.tar.gz 2.8 KB

Domain: Human Capital Economics

How educational attainment, cognitive skills, and schooling investment shape GDP growth, productivity, and economic development at the country level.

Period: 1950-present Population: Sovereign states (country-year, 100-150 countries) Level: macro

Overview

4
Constructs
6
Findings
1
Playbooks
4
Engines

Constructs

mean_years_schooling Mean Years of Schooling

Average years of formal education completed by adults aged 25+. Primary macro proxy for human capital stock.

educational attainmentyears of schoolingaverage schooling years
cognitive_skills Cognitive Skills

National average score on internationally comparable standardized tests (PISA, TIMSS). Captures educational quality.

test scoreshuman capital quality
school_enrollment_rate School Enrollment Rate

Gross or net enrollment ratio at primary, secondary, or tertiary level. Flow proxy for human capital investment.

enrollment ratiosecondary enrollment
physical_capital_investment Physical Capital Investment

Gross fixed capital formation as share of GDP. Key control in augmented Solow growth regressions.

investment sharecapital accumulation

Findings

Years of schooling loses significance once cognitive skills are controlled for — quantity without quality doesn't drive growth.

Direction: null Confidence: moderate Method: OLS with joint inclusion

Global average private return to one year of schooling is ~9% per year across 1,120 estimates in 139 countries.

Direction: positive Confidence: strong Method: Meta-analysis of Mincerian regressions

Cognitive skills measured by international test scores are more strongly predictive of economic growth than years of schooling alone, with one standard deviation in test scores associated with 2 percentage points higher annual GDP growth

Direction: positive Confidence: strong Method: ols_regression

Global average private returns to an additional year of schooling are approximately 9 percent per year, with returns highest in Sub-Saharan Africa and for primary education

Direction: positive Confidence: strong Method: ols_regression

One SD increase in cognitive skills test scores associated with ~2 pp higher annual GDP growth. Robust to IV identification.

Direction: positive Confidence: strong Method: OLS and IV cross-country

Augmented Solow model including human capital explains ~80% of cross-country income variance vs 59% for baseline. Human capital coefficient positive and significant.

Direction: positive Confidence: strong Method: OLS cross-section, N=98

Playbooks

Quick Start
0 steps

Engines

ols_regression instrumental_variables meta_analysis correlation_matrix

Tags

topichuman

Details

Domain: Human Capital Economics

How educational attainment, cognitive skills, and schooling investment shape GDP growth, productivity, and economic development at the country level.

Temporal scope: 1950-present | Population: Sovereign states (country-year, 100-150 countries)

Key Findings

  • Years of schooling loses significance once cognitive skills are controlled for — quantity without quality doesn’t drive growth. (null, moderate)
  • Global average private return to one year of schooling is ~9% per year across 1,120 estimates in 139 countries. (positive, strong)
  • Cognitive skills measured by international test scores are more strongly predictive of economic growth than years of schooling alone, with one standard deviation in test scores associated with 2 percentage points higher annual GDP growth (positive, strong)
  • Global average private returns to an additional year of schooling are approximately 9 percent per year, with returns highest in Sub-Saharan Africa and for primary education (positive, strong)
  • One SD increase in cognitive skills test scores associated with ~2 pp higher annual GDP growth. Robust to IV identification. (positive, strong)
  • Augmented Solow model including human capital explains ~80% of cross-country income variance vs 59% for baseline. Human capital coefficient positive and significant. (positive, strong)

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Installation

Install this PAX into your Praxis instance:

praxis_import_pax("human-capital-economics.pax.tar.gz", install=True)