Rebeca Maynard

University of Pennsylvania, Graduate School of Education, Faculty Member

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Stephanie K Kim

Georgetown University

David Seamon

Kansas State University

Jeroen Huisman

Ghent University

Professor Vangelis Tsiligkiris

Nottingham Trent University

Dante J. Salto

University of Wisconsin Milwaukee

Tamas Kozma

University of Debrecen

Antoni Verger

Universitat Autònoma de Barcelona

Robert Coelen

University of Groningen

Jabari Mahiri

University of California, Berkeley

Gary Ritter

University of Arkansas

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who imparted valuable input at critical junctures.

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$Research paper thumbnail of \u3cem\u3ePowerUp!\u3c/em\u3e: A Tool for Calculating Minimum Detectable Effect Sizes and Minimum Required Sample Sizes for Experimental and Quasi-Experimental Design Studies$

\u3cem\u3ePowerUp!\u3c/em\u3e: A Tool for Calculating Minimum Detectable Effect Sizes and Minimum Required Sample Sizes for Experimental and Quasi-Experimental Design Studies

This paper complements existing power analysis tools by offering tools to compute minimum detecta... more This paper complements existing power analysis tools by offering tools to compute minimum detectable effect sizes (MDES) for existing studies and to estimate minimum required sample sizes (MRSS) for studies under design. The tools that accompany this paper support estimates of MDES or MSSR for 21 different study designs that include 14 random assignment designs (6 designs in which individuals are randomly assigned to treatment or control condition and 8 in which clusters of individuals are randomly assigned to condition, with models differing depending on whether the sample was blocked prior to random assignment and by whether the analytic models assume constant, fixed, or random effects across blocks or assignment clusters); and 7 quasi-experimental designs (an interrupted time series design and 6 regression discontinuity designs that vary depending on whether the sample was blocked prior to randomization, whether individuals or clusters of individuals are assigned to treatment or ...

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Presented at The Eastern Economics Association

Institute for Research on Poverty, major aspects of the evaluation of the national demonstration ... more Institute for Research on Poverty, major aspects of the evaluation of the national demonstration of Supported Work. Funding for this national demon-stration comes from a number of federal agencies, but is channeled through the Employment and Training Administration, U.S. Department of Labor, as the lead federal agency, under Grant No. 33-36-76-01 and Contract Nos. 30-36-75-01 and 30-34-75-02. Researchers ~ndertaking such projects under government sponsorship are encouraged to express their professional judgements freely. Therefore, points of view or opinions stated in this document do not neces--sari1y represent_the official position or policy of the federal government or tne sponsors of the demonstration.------------~~._-----------_._._-The national Supported Work demonstration is a transitional public employment program for those with severe labor market disadvantages--lang-term AFDC recipients, ex-addicts, ex-offenders, and young school dropouts. In this paper we discuss the prog...

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Study Registration for the Field of Prevention Science: Considering Options and Paths Forward

Prevention Science, 2021

The practice of prospectively registering the details of intervention studies in a public databas... more The practice of prospectively registering the details of intervention studies in a public database or registry is gaining momentum across disciplines as a strategy for increasing the transparency, credibility, and accessibility of study findings. In this article, we consider five registries that may be relevant for registration of intervention studies in the field of prevention science: ClinicalTrials.gov, the American Economic Association Registry of Randomized Controlled Trials (AEA RCT Registry), the Open Science Framework Preregistration (OSF Preregistration), the Registry for International Development Impact Evaluations (RIDIE), and the Registry of Efficacy and Effectiveness Studies (REES). We examine the five registries in terms of substantive focus, study designs, and contents of registry entries. We consider two paths forward for prospective registration of intervention studies in the field of prevention science: Path A: register all studies in ClinicalTrials.gov and Path B: allow individual researchers to select the registry with the “best fit.” Lastly, we consider how the field might begin to establish norms around registration.

N O T I C e This Document Has Been Reproduced from Microfiche. Although It is Recognized That Certain Portions Are Illegible, It is Being Released in the Interest of Making Available as Much

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Effects of Welfare Reform on Teenage Parents and Their Children

The Future of Children, 1995

A key question in welfare policy concerns the potential that welfare-to-work programs have to dev... more A key question in welfare policy concerns the potential that welfare-to-work programs have to develop in teenage parents the motivation and skills to provide financially for themselves and their children. The Teenage Parent Welfare Demonstration was a major experiment initiated in 1986 by the U.S. Department of Health and Human Services and evaluated by Mathematica Policy Research, Inc., to test the impact of a welfare-to-work program for teenage parents which anticipated many features of the federal Job Opportunities and Basic Skills training program later established in the Family Support Act of 1988. Teenage mothers entering the welfare system were randomly assigned to a regular services group or to an enhanced services group. Teen mothers in the enhanced services group faced mandatory school and work requirements enforced by financial sanctions and received support services such as case management, parenting workshops, child care assistance, and education and training opportunities. This article reviews the policy context in which the Teenage Parent Welfare Demonstration was designed and implemented, and describes how participation in the enhanced services group affected the teen mothers as adults and as parents. Results showed that, for the reasonable aggregate annual cost of $2,400 per participant, the program increased the teenagers' attendance at school and job training programs, and modestly increased the proportion who were employed to 48%, compared with 43% among those receiving regular welfare services. As the participants' earnings from employment increased, their welfare grants shrank. Because these changes offset each other, the program did not improve the economic well-being of the families, although fewer tax dollars were needed to support them. The program did not discourage further childbearing, however, or affect either the parenting behavior of the young women or the development of their children, although the mothers who were most engaged in self-sufficiency activities were more positive and supportive when playing with their children. The Teenage Parent Welfare Demonstration experience revealed that the problems faced by teenage parents vary widely, making tailored services necessary. The evaluation results suggest that supportive, mandatory welfare-to-work interventions need not harm parents or their children in the short term, and that their modest positive effects on the financial independence of the teenage mothers may yield long-term rewards.

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Whether a Sociologist, Economist, Psychologist or Simply a Skilled EvaluatorLessons from Evaluation Practice in the United States

Evaluation, 2000

The following is based on a keynote address presented at III Congresso Nazionale Dell’Associazion... more

Overcoming the Challenges: A Response to Alan H. Schoenfeld's" What Doesn't Work

Educational …, 2006

We appreciate the opportunity to respond, as represen-tatives of the What Works Clearinghouse (WW... more

Overcoming the Challenges: A Response to Alan H. Schoenfeld's" What Doesn't Work

Educational …, 2006

We appreciate the opportunity to respond, as represen-tatives of the What Works Clearinghouse (WW... more

Overcoming the Challenges: A Response to Alan H. Schoenfeld’s “What Doesn’t Work”

by Robert Boruch and Rebeca Maynard

Educational Researcher, 2006

We appreciate the opportunity to respond, as represen-tatives of the What Works Clearinghouse (WW... more

Director

who imparted valuable input at critical junctures.

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\u3cem\u3ePowerUp!\u3c/em\u3e: A Tool for Calculating Minimum Detectable Effect Sizes and Minimum Required Sample Sizes for Experimental and Quasi-Experimental Design Studies

Download

Presented at The Eastern Economics Association

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Study Registration for the Field of Prevention Science: Considering Options and Paths Forward

Prevention Science, 2021

N O T I C e This Document Has Been Reproduced from Microfiche. Although It is Recognized That Certain Portions Are Illegible, It is Being Released in the Interest of Making Available as Much

Download

Effects of Welfare Reform on Teenage Parents and Their Children

The Future of Children, 1995

Download

Whether a Sociologist, Economist, Psychologist or Simply a Skilled EvaluatorLessons from Evaluation Practice in the United States

Evaluation, 2000

The following is based on a keynote address presented at III Congresso Nazionale Dell’Associazion... more

Overcoming the Challenges: A Response to Alan H. Schoenfeld's" What Doesn't Work

Educational …, 2006

We appreciate the opportunity to respond, as represen-tatives of the What Works Clearinghouse (WW... more

Overcoming the Challenges: A Response to Alan H. Schoenfeld's" What Doesn't Work

Educational …, 2006

We appreciate the opportunity to respond, as represen-tatives of the What Works Clearinghouse (WW... more

Overcoming the Challenges: A Response to Alan H. Schoenfeld’s “What Doesn’t Work”

by Robert Boruch and Rebeca Maynard

Educational Researcher, 2006

We appreciate the opportunity to respond, as represen-tatives of the What Works Clearinghouse (WW... more

Rebeca Maynard

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