34,012 research outputs found
Analyzing Social Experiments as Implemented: A Reexamination of the Evidence from the HighScope Perry Preschool Program
No full textSocial experiments are powerful sources of information about the effectiveness of interventions. In practice, initial randomization plans are almost always compromised. Multiple hypotheses are frequently tested. "Significant" effects are often reported with p-values that do not account for preliminary screening from a large candidate pool of possible effects. This paper develops tools for analyzing data from experiments as they are actually implemented. We apply these tools to analyze the influential HighScope Perry Preschool Program. The Perry program was a social experiment that provided preschool education and home visits to disadvantaged children during their preschool years. It was evaluated by the method of random assignment. Both treatments and controls have been followed from age 3 through age 40. Previous analyses of the Perry data assume that the planned randomization protocol was implemented. In fact, as in many social experiments, the intended randomization protocol was compromised. Accounting for compromised randomization, multiple-hypothesis testing, and small sample sizes, we find statistically significant and economically important program effects for both males and females. We also examine the representativeness of the Perry study.social experiment, compromised randomization, early childhood intervention, multiple-hypothesis testing
Analyzing social experiments as implemented: evidence from the HighScope Perry Preschool Program
No full textSocial experiments are powerful sources of information about the effectiveness of interventions. In practice, initial randomization plans are almost always compromised. Multiple hypotheses are frequently tested. "Significant" effects are often reported with p-values that do not account for preliminary screening from a large candidate pool of possible effects. This paper develops tools for analyzing data from experiments as they are actually implemented. We apply these tools to analyze the influential HighScope Perry Preschool Program. The Perry program was a social experiment that provided preschool education and home visits to disadvantaged children during their preschool years. It was evaluated by the method of random assignment. Both treatments and controls have been followed from age 3 through age 40. Previous analyses of the Perry data assume that the planned randomization protocol was implemented. In fact, as in many social experiments, the intended randomization protocol was compromised. Accounting for compromised randomization, multiple-hypothesis testing, and small sample sizes, we find statistically significant and economically important program effects for both males and females. We also examine the representativeness of the Perry study. Download appendix
Analyzing Social Experiments as Implemented: A Reexamination of the Evidence From the HighScope Perry Preschool Program
No full textSocial experiments are powerful sources of information about the effectiveness of interventions. In practice, initial randomization plans are almost always compromised. Multiple hypotheses are frequently tested. "Significant" effects are often reported with p-values that do not account for preliminary screening from a large candidate pool of possible effects. This paper develops tools for analyzing data from experiments as they are actually implemented. We apply these tools to analyze the influential HighScope Perry Preschool Program. The Perry program was a social experiment that provided preschool education and home visits to disadvantaged children during their preschool years. It was evaluated by the method of random assignment. Both treatments and controls have been followed from age 3 through age 40. Previous analyses of the Perry data assume that the planned randomization protocol was implemented. In fact, as in many social experiments, the intended randomization protocol was compromised. Accounting for compromised randomization, multiple-hypothesis testing, and small sample sizes, we find statistically significant and economically important program effects for both males and females. We also examine the representativeness of the Perry study.
Analyzing Social Experiments as Implemented: A Reexamination of the Evidence From the HighScope Perry Preschool Program
No full textSocial experiments are powerful sources of information about the effectiveness of interventions. In practice, initial randomization plans are almost always compromised. Multiple hypotheses are frequently tested. "Signicant" effects are often reported with p-values that do not account for preliminary screening from a large candidate pool of possible effects. This paper develops tools for analyzing data from experiments as they are actually implemented. We apply these tools to analyze the influential HighScope Perry Preschool Program. The Perry program was a social experiment that provided preschool education and home visits to disadvantaged children during their preschool years. It was evaluated by the method of random assignment. Both treatments and controls have been followed from age 3 through age 40. Previous analyses of the Perry data assume that the planned randomization protocol was implemented. In fact, as in many social experiments, the intended randomization protocol was compromised. Accounting for compromised randomization, multiple-hypothesis testing, and small sample sizes, we find statistically significant and economically important program effects for both males and females. We also examine the representativeness of the Perry study.early childhood intervention; compromised randomization; social experiment; multiple-hypothesis testing
Rev. Perry C. Bramlett Collection
No full textFinding aid of the Rev. Perry C. Bramlett manuscript collectionA graduate of Southern Seminary in Louisville, Kentucky; a noted author; and a dedicated and respected scholar, Rev. Perry C. Bramlett�s life work was taking C. S. Lewis to the local church. His widow, Joan Fine Bramlett of Fairhope, Alabama, selected Mercer University to house this collection to honor Bramlett�s work, to share the significance of Bramlett�s life, and to mark his contributions to the scholarship of C. S. Lewis and his friends and their influences
Jere Nash Interview with Ed Perry
No full textInterview conducted by author Jere Nash with former state legislator Ed Perry in the process of writing Mississippi Politics: The Struggle for Power, 1976-2006. Topics covered include Perry\u27s background and his first campaign for the state House; Buddie Newman; 1987 rules change in House; Perry as chair of the Appropriations Committee; Perry\u27s race against Tim Ford for Speaker; Perry as chair of Judiciary A Committee; Perry as Clerk of the House; Kirk Fordice; education legislation; separation of powers bill in 1984; 1987 highway bill; gambling legislation; reapportionment; Perry chair of Constitution Committee; banks paying interest; bond bill; tort reform; and the increase of partisanship in the House
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A letter from Perry Adkisson to Dr. Hector P. Garcia.
No full textA letter from Perry Adkisson, Chancellor of the Texas A&M University System, to Dr. Hector P. Garcia, thanking him for a recent meeting in Corpus Christi
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Model engine data sheets and operating instructions, P - S, 1942, 1990, 1998
No full textInstructions and parts list for the Perry carburetor
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A letter from David L. Perry to Dr. Hector P. Garcia, thanking him for his support of Vice President Mondale.
No full textA letter from David L. Perry to Dr. Hector P. Garcia, thanking him for his support of Vice President Mondale
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