experiment

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The present study was a randomized experiment comparing traditional lectures to a self-directed learning approach that involved replacing all lectures with free student study time and the availability of weekly question-answer session with the course coordinator.
For example, when well-specified causal hypotheses can be formulated and randomization to treatment and control conditions is ethical and feasible, a randomized experiment is the best method for estimating effects" (Feuer, Towne, Shavelson, 2002, p.
This is a study that is intended to provide convincing evidence and is normally a randomized experiment.
However, the Panel was clear in stating that "when well-specified causal hypotheses can be formulated and randomization to treatment and control conditions is ethical and feasible, a randomized experiment is the best method for estimating effects" (Feuer et al.
5) The best control group is constructed using a randomized experiment.
And in a randomized experiment in Akron, Ohio involving clients of a public health clinic, a small monetary incentive (the gift of a lottery ticket) increased immunization rates more than patient reminders or increased "off-hours" availability [Yokley and Glenwick 1984].
Department of Education, this randomized experiment requires that half the students in select districts throughout the State use the Carnegie Learning program, and half continue using the districts' existing Algebra I courses over a two-year period.
She discusses the different types of validity that make evaluation conclusions defensible; the concept of internal validity; three basic research designs used to assess causal claims about program impact (the randomized experiment, the quasi experiment, and the nonexperiment), their variations, and statistical models that can be used to analyze their data; survey sampling and questionnaire construction; and meta-analysis.
Evidence from a Randomized Experiment with the Rajasthan Police"
at the University of Oregon in Eugene, studied 1,400 employees in a randomized experiment to find out how they responded to different presentations of quality and cost information.
Using Rogers' diffusion of innovation model, the researchers designed a randomized experiment in 12 hospitals.
For example, in 1997 Mexico began a randomized experiment called Progresa in more than 24,000 households in 506 villages.

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