-- The Secretary shall carry out a continuous program of research and evaluation activities in order to increase knowledge about the implementation and effectiveness of home visiting programs,
using random assignment designs to the maximum extent feasible.
It was also a rigorous evaluation of the programs» implementation and effectiveness,
using random assignment of eligible couples to either a program or control group.
A major Manpower Demonstration and Research Corporation (MDRC) project, the Next Generation, is a collaboration between researchers at MDRC and several leading research universities and draws on 10 MDRC studies of the impact of welfare, anti-poverty, and employment policies,
using random assignment in a large controlled experiment, and does include preschool - age children aged two to five, but not infants.
He is well known for his expertise in econometrics and evaluation methodology, including the design, implementation, and analysis of evaluations of education programs
using random assignment and quasi-experimental designs
Validating measures of effective teaching
using random assignment
Reality: Fifteen empirical studies have examined academic outcomes for school choice participants
using random assignment, the «gold standard» of social science.
Evaluations
using random assignment find few significant effects overall on student test scores and behaviors (Zief, Lauver, & Maynard, 2006).
In A Win - Win Solution: The Empirical Evidence on School Choice, Friedman Foundation senior fellow Greg Forster looked at 12 empirical studies that «examined academic outcomes for school choice participants
using random assignment, the «gold standard» of social science.
studies that «examined academic outcomes for school choice participants
using random assignment, the «gold standard» of social science.
In a recent report, Friedman Foundation senior fellow Greg Forster looked at not one or two, but 12 empirical studies that «examine academic outcomes for school choice participants
using random assignment, the «gold standard» of social science.
He is well known for his expertise in econometrics and evaluation methodology, including the design, implementation, and analysis of evaluations of education programs
using random assignment and quasi-experimental designs Dynarski has published widely in peer - reviewed journals, including Educational Researcher, Educational Leadership, and Journal of Education for Students Placed at Risk.
Prior to the IES report, there have been 15 empirical studies examining academic outcomes for students participating in private school choice
using random assignment, the «gold standard» of defensible social science:
Eighteen empirical studies have examined academic outcomes for school choice participants
using random assignment, the gold standard of social science.
However, though the American education system prizes experimentation in the sense of trying many new things, it does not promote experimentation in the sense of
using random assignment to assess how effective these new things are.
I simply pointed out that the studies you cited did not support the claims you were making, and that you can not draw casual inferences from studies that do not
use random assignment.
The paper is one of a series of studies by Doyle and his colleagues which
use the random assignment of patients to hospitals, due to ambulance - dispatch practices, in order to evaluate hospital effectiveness.
By taking data from Boston schools with admissions lotteries, the scholars have
used the random assignment of students to schools to see how similar groups of students fare in different classroom settings.
We are also in talks with various folks about additional studies, all of which will
use random assignment or similarly rigorous methods.
The What Works Clearinghouse, which the U.S. Department of Education operates, lists more than a dozen school interventions that have shown significant effectiveness in rigorous evaluations, several of which
used random assignment.
Similar forces operate with the rapidly growing number of studies of preschool education that
use random assignment.
Most are the product of congressional requirements to assign at random; the high political and scholarly visibility of the Perry Preschool and Abecedarian projects that
used random assignment; and the involvement of researchers trained in psychology and microeconomics, fields where random assignment is valued.
Of the reasons critics articulate for rejecting random assignment as an evaluation tool, some are not very credible, but others are and should inform the design of future studies that
use random assignment.
The Commission, chaired by Dr. Paul Hill of the University of Washington, carefully reviewed the research on the impact of school choice on student achievement and included in its report the following statement: «The most rigorous school choice evaluations that
used random assignment... found that academic gains from vouchers were largely limited to the African - American students in their studies.»
If the district is willing to
use random assignment, we provide them with the software tools to select treatment and control groups.
Glazerman et al. (2013) is the only team so far to
use random assignment to validate the predictive power of teacher value - added effects between schools.
«The opportunity to
use random assignment - the lotteries - to study and compare two important models for school decentralization means that the students we compared were very similar in terms of family background, motivation, and anything else you might think of except for the likelihood of attending a charter or pilot school.»
Ten empirical studies have
used random assignment, the gold standard of social science, to examine how vouchers affect participants.
However, we might also observe this empirical finding if (1) there were no confounding and (2) schools that did not appear to
use random assignment had staffs that were more varied in their effectiveness.
All of the program evaluations
used a random assignment design.
We use the random assignment in the Project STAR experiment to estimate the effect of
In A Win - Win Solution: The Empirical Evidence on School Vouchers, Greg Forster of the Friedman Foundation writes: • Ten empirical studies have
used random assignment, the gold standard of social science, to examine how vouchers affect participants.
The 1 RCT on the UCLA / Lovaas — based treatment that met inclusion criteria was considered to be of fair quality.3 This study, the first attempted replication of Lovaas» manualized intervention to
use random assignment, a standardized assessment battery, and explicit accounting of intervention hours, compared a clinic - based method to a parent program.
The design
used random assignment of 24 schools into treatment and comparison conditions.
The study
uses a random assignment design, and is conducted by MDRC in partnership with James Bell Associates, Johns Hopkins University, and Mathematica Policy Research.
Used random assignment (the magic of science)-- a flip of a coin determined whether families went to mediation or adversary settlement
Not exact matches
Had
random assignment not been
used in the British multicenter study, breastfed infants might have seemed to perform more optimally than infants fed enriched preterm formula.
Quote: «Generation of the group
assignments was conducted
using a blocked randomisation method with a block size of four by a
random allocation software program»
After participants had given informed consent, the group was determined
using opaque, sealed envelopes containing
assignments generated by
random table number.
By contrast, when comparing two schools without
use of
random assignment, it can be very difficult, if not impossible, to ensure that the students being evaluated are otherwise similar.
We then tested whether the teachers who had been identified as more effective
using the value - added measures had students who achieved more following
random assignment.
Quantitative hypotheses, for instance, had to be «evaluated
using experimental designs in which individuals, entities, programs, or activities are assigned to different conditions with appropriate controls to evaluate the effects of the condition of interest through
random assignment experiments, or other designs to the extent such designs contain within - condition or across - condition controls.»
Studies have evaluated several reforms
using random -
assignment research designs, also
used in most medical experiments, in which subjects are randomly assigned to treatment and control groups.
We believe that all educators - from those standing in front of a roomful of students to those leading state educational agencies - should be able to participate in and
use research effectively: to distinguish between
random sampling and
random assignment, differentiate between credible evidence and anecdotal claims, and apply scientific conclusions for the benefit of their respective «teams.»
These
random assignments allow us to
use the STAR data to compare the performance of students assigned to career - ladder teachers with the performance of students in the same school and grade who were assigned to nonparticipating teachers.
The only comparisons of preschool curricula
using random -
assignment experiments (the gold standard for causal conclusions) are drawn from studies begun decades ago, mainly during Lyndon Johnson's War on Poverty.
Mr. Forster surveyed 10 empirical studies that
use «
random assignment, the gold standard of social science,» to assure that the groups being compared are as similar as possible.
Without the benefit of
random assignment, we
used a variety of statistical approaches to determine the program's impact on student achievement immediately after its launch.
The issue has been addressed in Kane and Staiger (6),
using a dataset with
random assignment of teachers to classrooms, and in Chetty et al. (15), who look at effects based on changes in teaching staff.
This evaluation has demonstrated the feasibility and benefits of
using a large - scale, multisite
random assignment research design to determine the impact of Career Academies on student outcomes.
However, recent studies
using randomized admission lotteries at charter schools and the
random assignment of teachers has suggested that simple, low - cost methods, when they control for students» prior achievement and characteristics, can yield estimates of teacher and school effects that are similar to what one observes with a randomized field trial.