Is the AK model still alive? The long‐run relation between growth and investment re‐examined
重新检验了增长与投资的长期关系，发现广义投资率对增长率有正向长期效应，支持AK型内生增长模型，基于24个OECD国家1950-1992年和5个工业化国家1870-1987年的数据。
To explore the empirical validity of AK ‐type endogenous growth models, the long‐run relation between growth and investment is examined. Contrary to Jones’s (1995) findings, the broadly measured rate of investment exerts a long‐run positive effect on the growth rate. This result is supported by evidence from twenty‐four OECD countries, 1950–92, and five major industrialized countries, 1870–1987. The panel‐data evidence from OECD countries also supports an extended AK model based on the Uzawa (1965) / Lucas (1988) two‐sector model with transitional dynamics. These findings suggest that the long‐run relation between growth and investment is consistent the AK model.