Embedding a Proof-of-Concept Test in an At-Scale National Policy Experiment: Greater Policy Learning but at What Cost to Statistical Power? The Social Security Administration's Benefit Offset National Demonstration (BOND)

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Title: Embedding a Proof-of-Concept Test in an At-Scale National Policy Experiment: Greater Policy Learning but at What Cost to Statistical Power? The Social Security Administration's Benefit Offset National Demonstration (BOND)
Language: English
Authors: Bell, Stephen H. (ORCID 0000-0002-2286-5887), Stapleton, David C. (ORCID 0000-0001-9147-3046), Wood, Michelle, Gubits, Daniel
Source: American Journal of Evaluation. Mar 2023 44(1):118-132.
Availability: SAGE Publications. 2455 Teller Road, Thousand Oaks, CA 91320. Tel: 800-818-7243; Tel: 805-499-9774; Fax: 800-583-2665; e-mail: journals@sagepub.com; Web site: https://sagepub.com
Peer Reviewed: Y
Page Count: 15
Publication Date: 2023
Document Type: Journal Articles
Reports - Descriptive
Descriptors: Public Policy, Policy Formation, Federal Programs, Social Services, Disabilities, Insurance, Research Design, Statistical Analysis, Costs, Volunteers, Program Effectiveness, Evidence, Program Evaluation
DOI: 10.1177/10982140211006786
ISSN: 1098-2140
1557-0878
Abstract: A randomized experiment that measures the impact of a social policy in a sample of the population reveals whether the policy will work on average with universal application. An experiment that includes only the subset of the population that volunteers for the intervention generates narrower "proof-of-concept" evidence of whether the policy can work for motivated individuals. Both forms of learning carry value, yet evaluations rarely combine the two designs. The U.S. Social Security Administration conducted an exception, the Benefit Offset National Demonstration (BOND). This article uses BOND to examine the statistical power implications and potential gains in policy learning--relative to costs--from combining volunteer and population-representative experiments. It finds that minimum detectable effects of volunteer experiments rise little when one adds a population-representative experiment, but those of a population-representative experiment double or quadruple with the addition of a volunteer experiment.
Abstractor: As Provided
Entry Date: 2023
Accession Number: EJ1374477
Database: ERIC
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  Data: <searchLink fieldCode="AR" term="%22Bell%2C+Stephen+H%2E%22">Bell, Stephen H.</searchLink> (ORCID <externalLink term="https://orcid.org/0000-0002-2286-5887">0000-0002-2286-5887</externalLink>)<br /><searchLink fieldCode="AR" term="%22Stapleton%2C+David+C%2E%22">Stapleton, David C.</searchLink> (ORCID <externalLink term="https://orcid.org/0000-0001-9147-3046">0000-0001-9147-3046</externalLink>)<br /><searchLink fieldCode="AR" term="%22Wood%2C+Michelle%22">Wood, Michelle</searchLink><br /><searchLink fieldCode="AR" term="%22Gubits%2C+Daniel%22">Gubits, Daniel</searchLink>
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  Data: SAGE Publications. 2455 Teller Road, Thousand Oaks, CA 91320. Tel: 800-818-7243; Tel: 805-499-9774; Fax: 800-583-2665; e-mail: journals@sagepub.com; Web site: https://sagepub.com
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  Data: A randomized experiment that measures the impact of a social policy in a sample of the population reveals whether the policy will work on average with universal application. An experiment that includes only the subset of the population that volunteers for the intervention generates narrower "proof-of-concept" evidence of whether the policy can work for motivated individuals. Both forms of learning carry value, yet evaluations rarely combine the two designs. The U.S. Social Security Administration conducted an exception, the Benefit Offset National Demonstration (BOND). This article uses BOND to examine the statistical power implications and potential gains in policy learning--relative to costs--from combining volunteer and population-representative experiments. It finds that minimum detectable effects of volunteer experiments rise little when one adds a population-representative experiment, but those of a population-representative experiment double or quadruple with the addition of a volunteer experiment.
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