State Capacity Index (Hanson-Sigman)国家能力指数 (Hanson-Sigman)

The State Capacity Index measures the latent capacity of states across three mutually reinforcing dimensions — extractive, coercive, and administrative — using Bayesian latent variable analysis. Covering 190 countries from 1960 to 2015, it provides a continuous, time-varying estimate of state capacity for comparative political research.

The dataset presents the overall capacity index (higher = greater capacity, on a standardized latent scale), its 0–1 standardized variant, and the key input indicators underlying each dimension: tax revenue and political extraction (extractive), military expenditure and personnel (coercive), and census frequency (administrative).

国家能力指数通过贝叶斯潜变量分析，衡量国家在三个相互支撑维度——汲取能力、强制能力和行政能力——上的潜在能力水平。覆盖 190 个国家，时间跨度 1960–2015 年，为比较政治研究提供连续、时变的国家能力估计。

本数据集呈现总体能力指数（数值越高代表国家能力越强，采用标准化潜变量量表）、其 0–1 标准化版本，以及各维度的核心输入指标：税收收入与政治汲取（汲取维度）、军费与军人规模（强制维度）、人口普查频率（行政维度）。