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Direct linkMiratrix, Luke W.; Weiss, Michael J.; Henderson, Brit – Journal of Research on Educational Effectiveness, 2021
Researchers face many choices when conducting large-scale multisite individually randomized control trials. One of the most common quantities of interest in multisite RCTs is the overall average effect. Even this quantity is non-trivial to define and estimate. The researcher can target the average effect across individuals or sites. Furthermore,…
Descriptors: Computation, Randomized Controlled Trials, Error of Measurement, Regression (Statistics)
Download full textWeiss, Michael J.; Unterman, Rebecca; Biedzio, Dorota – MDRC, 2021
Some education programs' early positive effects disappear over time. Other programs have unanticipated positive long-term effects. Foundations warn of the dangers of putting too much weight on in-program effects, which, they say, often fade after a program ends. This Issue Focus tackles the topic of post-program effects in postsecondary education.…
Descriptors: Outcomes of Education, Higher Education, College Credits, Program Evaluation
Weiss, Michael J.; Scrivener, Susan; Slaughter, Austin; Cohen, Benjamin – Educational Evaluation and Policy Analysis, 2021
Most community college students are referred to developmental education courses to build basic skills. These students often struggle in these courses and college more broadly. CUNY Start is a prematriculation program for students assessed as having significant remedial needs. CUNY Start students delay matriculation for one semester and receive…
Descriptors: Randomized Controlled Trials, Program Evaluation, Developmental Studies Programs, Community Colleges
Weiss, Michael J.; Scrivener, Susan; Slaughter, Austin; Cohen, Benjamin – MDRC, 2021
Most community college students are referred to developmental education courses to build basic skills. These students often struggle in these courses and college more broadly. CUNY Start is a prematriculation program for students assessed as having significant remedial needs. CUNY Start students delay matriculation for one semester and receive…
Descriptors: Randomized Controlled Trials, Program Evaluation, Developmental Studies Programs, Community Colleges
Weiss, Michael J.; Lockwood, J. R.; McCaffrey, Daniel F. – MDRC, 2014
In many experimental evaluations in the social and medical sciences, individuals are randomly assigned to a treatment arm or a control arm of the experiment. After treatment assignment is determined, individuals within one or both experimental arms are frequently grouped together (e.g., within classrooms or schools, through shared case managers,…
Descriptors: Error of Measurement, Randomized Controlled Trials, Correlation, Computation
Weiss, Michael J.; Headlam, Camielle – Journal of Research on Educational Effectiveness, 2019
Community colleges are a large sector of postsecondary education. In 2016-2017, the United States had nearly 1,000 public 2-year postsecondary institutions (community colleges), serving almost nine million students, representing 39% of all undergraduates. The majority of entering community college students require developmental (or remedial) math.…
Descriptors: Community Colleges, Two Year College Students, Computer Assisted Instruction, Electronic Learning
Weiss, Michael J.; Headlam, Camielle – MDRC, 2018
Community colleges are a large sector of postsecondary education. In 2016-2017, the United States had nearly 1,000 public 2-year postsecondary institutions (community colleges), serving almost nine million students, representing 39% of all undergraduates. The majority of entering community college students require developmental (or remedial) math.…
Descriptors: Randomized Controlled Trials, Computer Assisted Instruction, Pacing, Remedial Mathematics
Weiss, Michael J.; Lockwood, J. R.; McCaffrey, Daniel F. – Journal of Research on Educational Effectiveness, 2016
In the "individually randomized group treatment" (IRGT) experimental design, individuals are first randomly assigned to a treatment arm or a control arm, but then within each arm, are grouped together (e.g., within classrooms/schools, through shared case managers, in group therapy sessions, through shared doctors, etc.) to receive…
Descriptors: Randomized Controlled Trials, Error of Measurement, Control Groups, Experimental Groups
Weiss, Michael J.; Bloom, Howard S.; Verbitsky-Savitz, Natalya; Gupta, Himani; Vigil, Alma E.; Cullinan, Daniel N. – Journal of Research on Educational Effectiveness, 2017
Multisite trials, in which individuals are randomly assigned to alternative treatment arms within sites, offer an excellent opportunity to estimate the cross-site average effect of treatment assignment (intent to treat or ITT) "and" the amount by which this impact varies across sites. Although both of these statistics are substantively…
Descriptors: Randomized Controlled Trials, Evidence, Models, Intervention
Bloom, Howard S.; Porter, Kristin E.; Weiss, Michael J.; Raudenbush, Stephen – Society for Research on Educational Effectiveness, 2013
To date, evaluation research and policy analysis have focused mainly on average program impacts and paid little systematic attention to their variation. Recently, the growing number of multi-site randomized trials that are being planned and conducted make it increasingly feasible to study "cross-site" variation in impacts. Important…
Descriptors: Research Methodology, Policy, Evaluation Research, Randomized Controlled Trials
Gardenhire, Alissa; Diamond, John; Headlam, Camielle; Weiss, Michael J. – MDRC, 2016
Community colleges nationwide are looking for solutions to help students complete developmental (remedial) math--a known barrier to graduation. Some are offering computer-assisted, modular developmental math courses that allow students to earn credits incrementally and move through the curriculum at their own pace. One of these modularized…
Descriptors: Computer Assisted Instruction, Community Colleges, Computer Software, Control Groups
Mayer, Alexander K.; Weiss, Michael J.; Visher, Mary G.; Sommo, Colleen; Rudd, Timothy; Cullinan, Dan; Weissman, Evan; Wathington, Heather D. – Society for Research on Educational Effectiveness, 2013
This paper presents research that explores similarities and differences across six randomized controlled trials of learning communities in community colleges that were conducted by MDRC and the National Center for Postsecondary Research. Five of these studies track students' progress in the program semester and two follow-up semesters, and one…
Descriptors: Randomized Controlled Trials, Communities of Practice, Community Colleges, Progress Monitoring
