59,189 research outputs found

    Commodore Oliver H. Perry letter to Benjamin W. Crowinshield, April 9, 1815

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    This letter from Oliver Hazard Perry to Benjamin W. Crowinshield, Secretary of the Navy, was written in Newport Rhode Island on April 9, 1815. Perry was writing to recommend Doctor John R. Martin of the Army as a candidate for a Navy position.Newport April 9th 1815 Sir Doctor John R. Martin of the Army is desirous of being transferred to the Navy, and hes requested me to State to you such knowledge as I profess respecting him--He was Genl Harrison's principal Surgeon in the N. W. Army and immediately after the action of the 10th Sept he was sent to our aid by Gen Harrison with a strong recommendation. Very respectfully I am Sir, Your ob'd Serv't O. H. Perry (Oliver Hazard Perry)" ALS 1 P

    R. H. Perry & Co. v. Burns Brothers

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    Climatologie synoptique : R. G. Barry et A. H. Perry, Synoptic Climatology. Methods and Applications

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    Paul Patrice. Climatologie synoptique : R. G. Barry et A. H. Perry, Synoptic Climatology. Methods and Applications. In: Annales de Géographie, t. 84, n°464, 1975. pp. 462-463

    Perry, John R.

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    Military Information: 1st Sergeant, ""H"" 2nd Engineer Training Regiment, Student, Co #2, Sec. B, EOTS.This project was assisted by a grant from the New Jersey Historical Commission, a division of the Department of State

    Climatologie synoptique : R. G. Barry et A. H. Perry, Synoptic Climatology. Methods and Applications

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    Paul Patrice. Climatologie synoptique : R. G. Barry et A. H. Perry, Synoptic Climatology. Methods and Applications. In: Annales de Géographie, t. 84, n°464, 1975. pp. 462-463

    Analyzing Social Experiments as Implemented: A Reexamination of the Evidence from the HighScope Perry Preschool Program

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    Social 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 text
    Social 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 text
    Social 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 text
    Social 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
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