Sentences with phrase «random assignment of»

The evaluation used automated random assignment of children into treatment (WWK) and control (non-WWK) groups and administrative data from state child welfare agencies about children in the treatment and control groups.

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.

Limitations include small sample size, lack of random assignment of clinicians to see which ones are selected to receive the SFBT training and clients in both study groups were also receiving multiple sources of support from various community providers and, therefore, it is difficult to fully account for those possibly additional contributions to the clients» substance use and trauma - related problems.

The design used random assignment of 24 schools into treatment and comparison conditions.

A study with random assignment of 5 - year - olds to either Tools or an academic - focus program, found Tools superior both in academic outcomes and in executive functions.28

As Vandell (2000, p. 701) mentioned, it is the random assignment of families to the intervention or control conditions that gives this design its power.

Being able to select the decision maker is a strong advantage over the random assignment of family court judges to trials.

Berger J.A. set out that protocol for the random assignment of judges to sentence appeal panels is not followed.

[74] Publicly accessible records of this Court demonstrate that the failure to implement and adhere to an objective protocol for the random assignment of judges has resulted in significant discrepancies in both the number of sentencing panels on which some judges of the Court sit and a marked difference in the number of sentence appeals heard by certain justices of the Court as compared with their colleagues.

Field experiments have two core components: (1) random assignment of an intervention; and (2) behavioral responses to the intervention are measured in the subjects» actual environment.

Certain cabinet departments in the US will, from time to time, conduct a field experiment to examine the outcomes of some program they manage, involving true random assignment of «clients» to various treatment or to non-treatment.

These games can be fairly brief and, due to the random assignment of required items, occasionally can feel somewhat unfairly biased towards one player.

Each completed level gives you a spin on the wheel that gives you a random assignment of upgrades to choose from.

He contends that only random assignment of teachers and students — wholly impractical in big school systems — can eliminate enough bias and error to obtain a valid measure of how much teachers improve student performance.

Of these studies, the one by Nye, Konstantopoulos, and Hedges is the most compelling because it involved random assignment of students to classes controlled for factors such as the previous achievement of students, socioeconomic status, ethnicity, gender, class size, and whether or not an aide was present in class.

This was an experimental design with random assignment of at - risk students to first - round intervention services or a comparison group that did not receive intervention service until after the transition period testing.

Specifically, we test whether a teacher's performance on each measure under naturally occurring (i.e., non-experimental) settings predicts performance following random assignment of that teacher to a class of students.

So assuming random assignment of students skews the results.

So if the statistical controls used did not effectively «control for» the lack of non random assignment of students into classrooms, teachers may have been assigned high value - added scores not necessarily because they were high value - added teachers but because they were non-randomly assigned higher performing, higher aptitude, etc. students, in the first place and as a whole.

There is no minimum size for EEF - funded projects and we might fund a small project in one school if the research design was good enough, for example involving random assignment of individual students.

In our book, we point out that the research methods, most valued by American researchers, which involve the random assignment of research subjects to «treatments,» can not be used when researching entire national education systems, because it is not possible to randomly assign national populations to the national education systems of other countries.

The study has received a great deal of attention, in part because it is one of the few evaluations of school resources based on random assignment of students to test policy effects while controlling for other conditions, a method that is generally thought to be a high - quality research design.

A key feature of Project STAR's experimental design was the random assignment of both students and teachers to specific classrooms within each school.

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.

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.

Under the assumption (for residuals) of random assignment of students and teachers within schools, the 0.79 estimate has a structural interpretation based on a production function, and the 0.13 estimate provides a lower bound.

Morever, he said, a significant number of schools did not comply with the random assignment of students, reducing the number of teachers in the sample.

As is the case for the imbalance in the decline - to - participate rates across families assigned to the control and treatment groups, the inclusion in the treatment group of children not randomly assigned to treatment nullifies the assumption justified by random assignment of equivalence of the treatment and control children at the outset of the study.

Though it is difficult to isolate the effects of redshirting from those of other characteristics, such as family background, two recent studies that take advantage of either variation in state birthday cut - off dates or the random assignment of students to kindergarten classrooms have enabled researchers to measure the impact of being among the oldest students in a class.

The random assignment of students to classrooms, however, meant that pairs of children with the same birthday fell into different positions in their classroom age distribution by the luck of the draw.

Research that painstakingly tries to separate out the actual effects of schools clearly has value, but it is important to bear in mind that, in the absence of random assignment of students to schools (such as occurs via charter school lotteries), families that choose for their children to be educated in their home (through virtual schools) are likely to be very different from other families.

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.

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.

Some proponents of RCTs claim that random assignment of patients to treatment and comparison groups should ease concerns about individual differences.

Not exact matches

The tests should consist of random - assignment demonstrations that measure the effects either of whole programs, such as Triple P, or of composite programs made up of elements that previous research has proved successful.

Screening, random assignment, and follow - up of the study participants in the Swedish dietary and exercise behavior - modification intervention trial in lactating overweight and obese women.

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»

«It's a random - assignment, placebo - controlled study, the best kind of study there is,» Seligman says.

In many parts of the U.S., multiple ambulance companies cover a given area, and their assignment to patients is essentially random; the first available company will take a patient.

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.

By random assignment, about half of the infants received an IOL and the other half received contact lenses.

My problem with a lot of planners is that I usually only have enough room to write down class assignments, but I can never fit in extracurriculars and other random things I need to do.

Although there were some small - scale random - assignment experiments of the effects of desegregation on test scores, most of what we know today concerns the relationship between a school outcome such as achievement on the one hand, and racial composition on the other.

The random assignment study of field trips was made possible by the fact that the Crystal Bridges Museum of American Art opened in Northwest Arkansas, an area that had never before had a major art museum.

The random assignment to the two separate groups of students who are otherwise similar — in their measured characteristics and the fact that they expressed a desire to attend a charter school — enables us to isolate the impact of attending a charter school.

A random - assignment evaluation of career academies, conducted by MDRC, addresses this question of selection bias.

We are also in talks with various folks about additional studies, all of which will use random assignment or similarly rigorous methods.

This first - ever, large - scale, random - assignment experiment of the effects of school tours of an art museum should help inform the thinking of school administrators, educators, policymakers, and philanthropists.

Curriculum implementation: HGSE investigators Fischer, Selman, Snow and Uccelli will be heavily involved in conceptualizing professional development, fidelity and quality of implementation instruments, and monitoring of implementation for the 4th - 8th grade curricular enhancements.Evaluation of curricular enhancements: HGSE investigators Jones and Kim, together with a data manager and a small team of doctoral students, will conduct the design and analysis associated with the school - level random - assignment evaluation of the 4th - 8th grade curriculum innovations.

A composite measure on teacher effectiveness drawing on all three of those measures, and tested through a random - assignment experiment, closely predicted how much a high - performing group of teachers would successfully boost their students» standardized - test scores, concludes the series of new papers, part of the massive Measures of Effective Teaching study launched more than three years ago.