Experimental Design - Revision history

Wiki Gardener at 16:52, 6 October 2014

2014-10-06T16:52:25Z

Katharina Wiedemann at 13:32, 8 August 2014

2014-08-08T13:32:45Z

Wiki Gardener at 13:59, 18 June 2014

2014-06-18T13:59:22Z

Wiki Gardener at 13:48, 18 June 2014

2014-06-18T13:48:07Z

Katharina Wiedemann at 12:53, 5 June 2013

2013-06-05T12:53:58Z

Robert at 08:01, 22 May 2012

2012-05-22T08:01:27Z

Katharina Wiedemann at 15:21, 16 May 2012

2012-05-16T15:21:28Z

Rauwol mar at 12:04, 2 June 2010

2010-06-02T12:04:42Z

Robert at 14:48, 27 January 2010

2010-01-27T14:48:08Z

Intern at 10:39, 17 November 2009

2009-11-17T10:39:52Z

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 = Overview =
-Experimental designs (also known as randomization) are generally considered the most robust of the evaluation methodologies. By randomly allocating the intervention among eligible beneficiaries, the assignment process itself creates comparable treatment and control groups that are statistically equivalent to one another, given appropriate sample sizes. This is a very powerful outcome because, in theory, the [[Control_Groups|control groups]] generated through random assignment serve as a perfect counterfactual, free from the troublesome selection bias issues that exist in all evaluations.<ref name="World Bank - http://siteresources.worldbank.org/INTISPMA/Resources/handbook.pdf">World Bank - http://siteresources.worldbank.org/INTISPMA/Resources/handbook.pdf</ref>
+Experimental designs (also known as randomization) are generally considered the most robust of the evaluation methodologies. By randomly allocating the intervention among eligible beneficiaries, the assignment process itself creates comparable treatment and control groups that are statistically equivalent to one another, given appropriate sample sizes. This is a very powerful outcome because, in theory, the [[Control Groups|control groups]] generated through random assignment serve as a perfect counterfactual, free from the troublesome selection bias issues that exist in all evaluations.<ref name="World Bank - http://siteresources.worldbank.org/INTISPMA/Resources/handbook.pdf">World Bank - http://siteresources.worldbank.org/INTISPMA/Resources/handbook.pdf</ref>
 = Experimental or Randomized Control Designs =
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 *[[Quasi-Experimental or Non-Experimental Designs|Quasi-Experimental or Non-Experimental Designs]]
 <br/>
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 [[Category:Impacts]]

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 = Overview =
 = Experimental or Randomized Control Designs =
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 = Further Information =
-*[http://www.stat.yale.edu/Courses/1997-98/101/expdes.htm stat.yale.edu]
+*[[Quasi-Experimental or Non-Experimental Designs|Quasi-Experimental or Non-Experimental Designs]]
 <br/>
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 = References =
-*''Joint Committee on Standards for Educational Evaluation. (1994). The Program Evaluation Standards, 2nd ed. Thousand Oaks, CA: Sage''
+*Joint Committee on Standards for Educational Evaluation. (1994). The Program Evaluation Standards, 2nd ed. Thousand Oaks, CA: Sage
-*''Baker, J. L. (2000): Evaluating the Impact of Development Projects on Poverty. A Handbook for Practioners. The World Bank, Washington, D.C.''
+*[http://siteresources.worldbank.org/INTISPMA/Resources/handbook.pdf Baker, J. L. (2000): Evaluating the Impact of Development Projects on Poverty. A Handbook for Practioners. The World Bank, Washington, D.C.]
 <references />
 [[Category:Impacts]]

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 *[http://www.stat.yale.edu/Courses/1997-98/101/expdes.htm stat.yale.edu]
+<br/>
 = References =

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 = Experimental or Randomized Control Designs =
 *The plan of an experiment, including selection of subjects, order of administration of the experimental treatment, the kind of treatment, the procedures by which it is administered, and the recording of the data (with special reference to the particular statistical analyses to be performed.
-*''Randomization'', in which the selection into the treatment and control groups is random within some well-defined set of people. In this case there should be no difference (in expectation) between the two groups besides the fact that the treatment group had access to the program. (There can still be differences due to sampling error; the larger the size of the treatment and control samples the less the error.).
+*Randomization, in which the selection into the treatment and control groups is random within some well-defined set of people. In this case there should be no difference (in expectation) between the two groups besides the fact that the treatment group had access to the program. (There can still be differences due to sampling error; the larger the size of the treatment and control samples the less the error.).

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-*The plan of an experiment, including selection of subjects, order of administration of the experimental treatment, the kind of treatment, the procedures by which it is administered, and the recording of the data (with special reference to the particular statistical analyses to be performed.
+= Experimental or Randomized Control Designs =
 *''Randomization'', in which the selection into the treatment and control groups is random within some well-defined set of people. In this case there should be no difference (in expectation) between the two groups besides the fact that the treatment group had access to the program. (There can still be differences due to sampling error; the larger the size of the treatment and control samples the less the error.).
-''Joint Committee on Standards for Educational Evaluation. (1994). The Program Evaluation Standards, 2nd ed. Thousand Oaks, CA: Sage''
+= Further Information =
-''Baker, J. L. (2000): Evaluating the Impact of Development Projects on Poverty. A Handbook for Practioners. The World Bank, Washington, D.C.''
+*''Joint Committee on Standards for Educational Evaluation. (1994). The Program Evaluation Standards, 2nd ed. Thousand Oaks, CA: Sage''
-&nbsp;
+<references />
 [[Category:Impacts]]

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