چکیده:
ack of infrastructure continues to be a key obstacle to growth and development in most of low-income countries. In recent years,however, the role of infrastructure has received increased attention. The goal of this paper is to provide an empirical evaluation of the role of infrastructure on economic growth of Iran over the period of 1985 to2008. To do this, we have employed the autoregressive distributed lag (ARDL) framework and introduced Infrastructure capital as an input into aggregate production, because it comes at the cost of reducedinvestment in other types of capital. Our findings indicate that transportation facilities distinctively length of railway and roadway, also telecommunication infrastructure (fixed phone line) have positive andsignificant impact on economic growth of Iran but electricity production capacity doesn’t have significant impact on per capita output growth.
خلاصه ماشینی:
Table 1: Brief Review of Literature Study Aggregation Level Data Conclusion Aschauer(1989) US Time Series, 1949-85 Strong and positive relationship between productivity and public investment Ford & Poyet (1991) US Time Series, 1957-83 Public investment has a positive and significant effect on private output Shah (1992) Mexico Time Series, 1970-87 Public infrastructure has positive multiplies effects on output Toen-Goet & Jongeling (1994) US Time Series, 1960-2000 Public investment on infrastructure has a significant and positive influence on output Ram (1996) 53 Developing Countries Panel Data, 1973-80, 1980- 85, 1985-90 Public investment appears more productive and private investment Morrison and Schwartz (1996) US State-level data Infrastructure investment provides a significant return to firms, and augments productivity growth.
Ramirez (1998) Chile Time Series, 1960-93 Public investment has a positive and highly significant effect on growth Nourzad (2000) 12 Developing/ Developed Countries Panel Data, 1976-89 Public capital exerts a positive and statistically significant effect on labor productivity Shioji (2001) US & Japanese Regions Panel Data, 1958-78 Infrastructure capital has a significant positive effect on long run output in both countries Kneller, Bleanery & Gemmel (2001) 22 OECD countries Panel Data, 1970-95 An increase in productive expenditure significantly enhances growth Rioja (2001) 7 Latin American Countries Time Series Infrastructure investment has sizeable positive effects on GDP and private investment Dodonov, Hirschhausen & Sugolov(2002) UKRAINE Panel Data Positive relation between infrastructure investments and growth.
- Logarithm of per worker fixed telephone line (Log(ptel)): The coefficient of this variable according to the estimating results is positive and significant,that indicates Telecommunication infrastructures are important for cost reduction and economic growth in Iran.