Template-Type: ReDIF-Paper 1.0 Handle: RePEc:ida:wpaper:WP2605 Number: WP2605 Creation-Date: 2026-01-29 Length: 35 pages File-URL: https://repec.ideagov.eu/RePEc/ida/wpaper/WP2605.pdf File-Format: Application/pdf File-Function: First version, 2026 Title: Asymmetric Decentralization: Nature and Determinants Abstract: This paper provides a systematic empirical analysis of the determinants of asymmetric decentralization across a broad cross-section of countries and regions. Using data from the Regional Authority Index (RAI), the authors examine both cross-country and cross-regional variation and assess the extent to which structural factors—such as ethnic fragmentation, population size, territorial diversity, and geographic characteristics—shape asymmetric outcomes. The study finds that geographic, demographic and social variables explain asymmetry more consistently than economic or political factors. At the regional level, distance from the national capital and linguistic distinctiveness are associated with above-average authority. Dynamic analysis shows that transitions to democracy act as catalysts that activate underlying structural conditions, increasing asymmetry over time. Classification-JEL: H77, H11, R58, C23 Keywords: asymmetric decentralization, multilevel governance, regional authority, ethnic fragmentation, robust regression, territorial diversity Author-Name: Santiago Lago-Peñas Author-Name-First: Santiago Author-Name-Last: Lago-Peñas Author-Name: María Cadaval-Sampedro Author-Name-First: María Author-Name-Last: Cadaval-Sampedro Author-Name: Jorge Martínez-Vázquez Author-Name-First: Jorge Author-Name-Last: Martínez-Vázquez Author-Name: Ana Herrero-Alcalde Author-Name-First: Ana Author-Name-Last: Herrero-Alcalde