Scipediacontent at 10:53, 25 January 2021

2021-01-25T10:53:19Z

Scipediacontent at 15:18, 21 January 2021

2021-01-21T15:18:30Z

Scipediacontent: Scipediacontent moved page Draft Content 933863590 to Ali et al 2015b

2020-10-14T13:35:01Z

Scipediacontent moved page Draft Content 933863590 to Ali et al 2015b

Scipediacontent: Created page with " == Abstract == Transport infrastructure is deemed to be central to development and consumes a large fraction of the development assistance envelope. Yet there is debate abou..."

2020-10-14T13:34:59Z

Created page with " == Abstract == Transport infrastructure is deemed to be central to development and consumes a large fraction of the development assistance envelope. Yet there is debate abou..."

New page

== Abstract ==

Transport infrastructure is deemed to be central to development and consumes a large fraction of the development assistance envelope. Yet there is debate about the economic impact of road projects. This paper proposes an approach to assess the differential development impacts of alternative road construction and prioritize various proposals, using Nigeria as a case study. Recognizing that there is no perfect measure of economic well-being, a variety of outcome metrics are used, including crop revenue, livestock revenue, non-agricultural income, the probability of being multi-dimensionally poor, and local gross domestic product for Nigeria. Although the measure of transport is the most accurate possible, it is still endogenous because of the nonrandom placement of road infrastructure. This endogeneity is addressed using a seemingly novel instrumental variable termed the natural path: the time it would take to walk along the most logical route connecting two points without taking into account other, bias-causing economic benefits. Further, the analysis considers the potential endogeneity from nonrandom placement of households and markets through carefully chosen control variables. It finds that reducing transportation costs in Nigeria will increase crop revenue, non-agricultural income, the wealth index, and local gross domestic product. Livestock sales increase as well, although this finding is less robust. The probability of being multi-dimensionally poor will decrease. The results also cast light on income diversification and structural changes that may arise. These findings are robust to relaxing the exclusion restriction. The paper also demonstrates how to prioritize alternative road programs by comparing the expected development impacts of alternative New Partnership for Africas Development projects.

Document type: Book

== Full document ==
<pdf>Media:Draft_Content_933863590-beopen813-9351-document.pdf</pdf>

== Original document ==

The different versions of the original document can be found in:

* [http://dx.doi.org/10.1596/1813-9450-7271 http://dx.doi.org/10.1596/1813-9450-7271]

* [http://hdl.handle.net/10986/22004 http://hdl.handle.net/10986/22004] under the license http://creativecommons.org/licenses/by/3.0/igo/

* [http://pdfs.semanticscholar.org/aa2b/672de1a2531236a5b7f94b15b53eaf026b0f.pdf http://pdfs.semanticscholar.org/aa2b/672de1a2531236a5b7f94b15b53eaf026b0f.pdf]

← Older revision		Revision as of 10:53, 25 January 2021
Line 7:		Line 7:

	== Full document ==		== Full document ==
−	<pdf>Media:Ali_et_al_2015b-~~beopen1713~~-~~1361~~-document.pdf</pdf>	+	<pdf>Media:Ali_et_al_2015b-beopen1386-8533-document.pdf</pdf>

@@ Line 2: / Line 2: @@
 == Abstract ==
-Transport infrastructure is deemed to be central to development and consumes a large fraction of the development assistance envelope. Yet there is debate about the economic impact of road projects. This paper proposes an approach to assess the differential development impacts of alternative road construction and prioritize various proposals, using Nigeria as a case study. Recognizing that there is no perfect measure of economic well-being, a variety of outcome metrics are used, including crop revenue, livestock revenue, non-agricultural income, the probability of being multi-dimensionally poor, and local gross domestic product for Nigeria. Although the measure of transport is the most accurate possible, it is still endogenous because of the nonrandom placement of road infrastructure. This endogeneity is addressed using a seemingly novel instrumental variable termed the natural path: the time it would take to walk along the most logical route connecting two points without taking into account other, bias-causing economic benefits. Further, the analysis considers the potential endogeneity from nonrandom placement of households and markets through carefully chosen control variables. It finds that reducing transportation costs in Nigeria will increase crop revenue, non-agricultural income, the wealth index, and local gross domestic product. Livestock sales increase as well, although this finding is less robust. The probability of being multi-dimensionally poor will decrease. The results also cast light on income diversification and structural changes that may arise. These findings are robust to relaxing the exclusion restriction. The paper also demonstrates how to prioritize alternative road programs by comparing the expected development impacts of alternative New Partnership for Africas Development projects.
+Transport infrastructure is deemed to be             central to development and consumes a large fraction of the             development assistance envelope. Yet there is debate about             the economic impact of road projects. This paper proposes an             approach to assess the differential development impacts of             alternative road construction and prioritize various             proposals, using Nigeria as a case study. Recognizing that             there is no perfect measure of economic well-being, a             variety of outcome metrics are used, including crop revenue,             livestock revenue, non-agricultural income, the probability             of being multi-dimensionally poor, and local gross domestic             product for Nigeria. Although the measure of transport is             the most accurate possible, it is still endogenous because             of the nonrandom placement of road infrastructure. This             endogeneity is addressed using a seemingly novel             instrumental variable termed the natural path: the time it             would take to walk along the most logical route connecting             two points without taking into account other, bias-causing             economic benefits. Further, the analysis considers the             potential endogeneity from nonrandom placement of households             and markets through carefully chosen control variables. It             finds that reducing transportation costs in Nigeria will             increase crop revenue, non-agricultural income, the wealth             index, and local gross domestic product. Livestock sales             increase as well, although this finding is less robust. The             probability of being multi-dimensionally poor will decrease.             The results also cast light on income diversification and             structural changes that may arise. These findings are robust             to relaxing the exclusion restriction. The paper also             demonstrates how to prioritize alternative road programs by             comparing the expected development impacts of alternative             New Partnership for Africas Development projects.
 Document type: Book
 == Full document ==
-<pdf>Media:Draft_Content_933863590-beopen813-9351-document.pdf</pdf>
+<pdf>Media:Ali_et_al_2015b-beopen1713-1361-document.pdf</pdf>
@@ Line 13: / Line 13: @@
 The different versions of the original document can be found in:
 * [http://dx.doi.org/10.1596/1813-9450-7271 http://dx.doi.org/10.1596/1813-9450-7271]
@@ Line 18: / Line 20: @@
 * [http://hdl.handle.net/10986/22004 http://hdl.handle.net/10986/22004] under the license http://creativecommons.org/licenses/by/3.0/igo/
-* [http://pdfs.semanticscholar.org/aa2b/672de1a2531236a5b7f94b15b53eaf026b0f.pdf http://pdfs.semanticscholar.org/aa2b/672de1a2531236a5b7f94b15b53eaf026b0f.pdf]
+* [http://www-wds.worldbank.org/external/default/WDSContentServer/WDSP/IB/2015/05/18/090224b082e9bb99/2_0/Rendered/PDF/Transport0infr0plication0to0Nigeria.pdf http://www-wds.worldbank.org/external/default/WDSContentServer/WDSP/IB/2015/05/18/090224b082e9bb99/2_0/Rendered/PDF/Transport0infr0plication0to0Nigeria.pdf]

← Older revision	Revision as of 13:35, 14 October 2020
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Ali et al 2015b - Revision history

Scipediacontent at 10:53, 25 January 2021

Scipediacontent at 15:18, 21 January 2021

Scipediacontent: Scipediacontent moved page Draft Content 933863590 to Ali et al 2015b

Scipediacontent: Created page with " == Abstract == Transport infrastructure is deemed to be central to development and consumes a large fraction of the development assistance envelope. Yet there is debate abou..."