Intervention Size and Persistence

Intervention Size and Persistence

Do larger interventions improve longer run outcomes more cost effectively? And should poverty traps motivate increasing intervention size? This paper considers two approaches to increasing intervention size in the context of temporary unconditional...

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Bibliographic Details
Main Authors: Kondylis, Florence, Loeser, John
Format: Working Paper
Language:English
Published: World Bank, Washington, DC 2021
Subjects:
CASH TRANSFERS
LONG-RUN IMPACT
COST EFFECTIVENESS
HOUSEHOLD CONSUMPTION
BENEFICIARY TARGETING
POVERTY TRAP
INTERVENTION DESIGN
GRADUATION
Online Access:http://documents.worldbank.org/curated/undefined/404501631120877904/Intervention-Size-and-Persistence
http://hdl.handle.net/10986/36242
id okr-10986-36242
recordtype oai_dc
spelling okr-10986-362422021-09-16T19:38:06Z Intervention Size and Persistence Kondylis, Florence Loeser, John CASH TRANSFERS LONG-RUN IMPACT COST EFFECTIVENESS HOUSEHOLD CONSUMPTION BENEFICIARY TARGETING POVERTY TRAP INTERVENTION DESIGN GRADUATION Do larger interventions improve longer run outcomes more cost effectively? And should poverty traps motivate increasing intervention size? This paper considers two approaches to increasing intervention size in the context of temporary unconditional cash transfers — larger transfers (intensity), and adding complementary graduation program interventions (scope). It does so leveraging 38 experimental estimates of dynamic consumption impacts from 14 developing countries. First, increasing intensity decreases cost effectiveness and does not affect persistence of impacts. This result can be explained by poverty traps or decreasing marginal return on investment in a standard buffer stock model. Second, increasing scope increases impacts and persistence, but reduces cost effectiveness at commonly evaluated time horizons and increases heterogeneity. In summary, larger interventions need not have more persistent impacts, and when they do, this may come at the expense of cost effectiveness, and poverty traps are neither necessary nor sufficient for these results. 2021-09-09T14:08:23Z 2021-09-09T14:08:23Z 2021-09 Working Paper http://documents.worldbank.org/curated/undefined/404501631120877904/Intervention-Size-and-Persistence http://hdl.handle.net/10986/36242 English Policy Research Working Paper, No. 9769 CC BY 3.0 IGO http://creativecommons.org/licenses/by/3.0/igo World Bank World Bank, Washington, DC Publications & Research Publications & Research :: Policy Research Working Paper
repository_type Digital Repository
institution_category Foreign Institution
institution Digital Repositories
building World Bank Open Knowledge Repository
collection World Bank
language English
topic CASH TRANSFERS
LONG-RUN IMPACT
COST EFFECTIVENESS
HOUSEHOLD CONSUMPTION
BENEFICIARY TARGETING
POVERTY TRAP
INTERVENTION DESIGN
GRADUATION
spellingShingle CASH TRANSFERS
LONG-RUN IMPACT
COST EFFECTIVENESS
HOUSEHOLD CONSUMPTION
BENEFICIARY TARGETING
POVERTY TRAP
INTERVENTION DESIGN
GRADUATION
Kondylis, Florence
Loeser, John
Intervention Size and Persistence
relation Policy Research Working Paper, No. 9769
description Do larger interventions improve longer run outcomes more cost effectively? And should poverty traps motivate increasing intervention size? This paper considers two approaches to increasing intervention size in the context of temporary unconditional cash transfers — larger transfers (intensity), and adding complementary graduation program interventions (scope). It does so leveraging 38 experimental estimates of dynamic consumption impacts from 14 developing countries. First, increasing intensity decreases cost effectiveness and does not affect persistence of impacts. This result can be explained by poverty traps or decreasing marginal return on investment in a standard buffer stock model. Second, increasing scope increases impacts and persistence, but reduces cost effectiveness at commonly evaluated time horizons and increases heterogeneity. In summary, larger interventions need not have more persistent impacts, and when they do, this may come at the expense of cost effectiveness, and poverty traps are neither necessary nor sufficient for these results.
format Working Paper
author Kondylis, Florence
Loeser, John
author_facet Kondylis, Florence
Loeser, John
author_sort Kondylis, Florence
title Intervention Size and Persistence
title_short Intervention Size and Persistence
title_full Intervention Size and Persistence
title_fullStr Intervention Size and Persistence
title_full_unstemmed Intervention Size and Persistence
title_sort intervention size and persistence
publisher World Bank, Washington, DC
publishDate 2021
url http://documents.worldbank.org/curated/undefined/404501631120877904/Intervention-Size-and-Persistence
http://hdl.handle.net/10986/36242
_version_ 1764484849483120640

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