Incorporating Randomization into Program Evaluation Design
نویسندگان
چکیده
In any program evaluation context, the quality and usefulness of an estimated intervention effect depends to a significant extent on its internal and external validity. If a study is internally valid, we can credibly state that the estimated impact was caused by the intervention being evaluated. If a study is externally valid, we can confidently extrapolate findings to a larger population of interest.
منابع مشابه
Avoiding randomization failure in program evaluation, with application to the Medicare Health Support program.
We highlight common problems in the application of random treatment assignment in large-scale program evaluation. Random assignment is the defining feature of modern experimental design, yet errors in design, implementation, and analysis often result in real-world applications not benefiting from its advantages. The errors discussed here cover the control of variability, levels of randomization...
متن کاملA Randomization Test SAS/IML® Program for Making Treatment Effects Inferences for Extensions and Variations of ABAB Single-Case Experimental Designs
While the evaluation of intervention effects in single-case research has relied on visual inspection of the data (Kazdin, 1980), the description of graphical forms are not considered an adequate substitute for statistical tests (Edgington, 1980). Moreover, there are cases when graphical displays of data tend to be quite ambiguous and treatment effects are not easily appreciated (Ferron & Sentov...
متن کاملCoordinating Randomized Policies for Increasing Security in Multiagent Systems
Despite significant recent advances in decision theoretic frameworks for reasoning about multiagent teams, little attention has been paid to applying such frameworks in adversarial domains, where the agent team may face security threats from other agents. This paper focuses on domains where such threats are caused by unseen adversaries whose actions or payoffs are unknown. In such domains, acti...
متن کاملA Community Based Treatment: Impact of Social Skills Training Program on Improving Social Skills among Schizophrenic Patients
One of the hallmarks of schizophrenia is impairment in social functioning. A large body of research supports the effectiveness of social skills training in integrating the schizophrenic patients into the community. So, we aimed to investigate the effectiveness of a constructed social skills training program on improving social skills among schizophrenic patients. The study was based on a contro...
متن کاملPERFORMANCE BASED OPTIMAL SEISMIC DESIGN OF RC SHEAR WALLS INCORPORATING SOIL–STRUCTURE INTERACTION USING CSS ALGORITHM
In this article optimal design of shear walls is performed under seismic loading. For practical aims, a database of special shear walls is created. Special shear walls are used for seismic design optimization employing the charged system search algorithm as an optimizer. Constraints consist of design and performance limitations. Nonlinear behavior of the shear wall is taken into account and per...
متن کامل