Relationships Among Pre-Post Designs

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Relationships Among Pre-Post Designs. Pre-Post Designs. O X O O O. Randomized experiment (R) Nonequivalent group design (N) Regression-Discontinuity design (C). The Main Issue. Selection threats Are the groups similar before the treatment?
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Relationships Among Pre-Post DesignsPre-Post DesignsO X OO O
  • Randomized experiment (R)
  • Nonequivalent group design (N)
  • Regression-Discontinuity design (C)
  • The Main Issue
  • Selection threats
  • Are the groups similar before the treatment?
  • Related to assignment method in each design
  • Assignment MethodProbability of Assignment to Treatment Given the Pretest1.0.50PretestAssignment MethodProbability of Assignment to Treatment Given the Pretest1.0RE.50PretestAssignment MethodProbability of Assignment to Treatment Given the Pretest1.0RE.5RD0PretestAssignment MethodProbability of Assignment to Treatment Given the Pretest1.0RE.5NEGDRD0PretestAssignment MethodProbability of Assignment to Treatment Given the Pretest1.0RE.5NEGDRD0PretestPretest EquivalenceMaximallynonequivalentEquivalentPretest EquivalenceREMaximallynonequivalentEquivalentPretest EquivalenceRDREMaximallynonequivalentEquivalentPretest EquivalenceRDNEGDREMaximallynonequivalentEquivalentAssignment Rule KnownRandomized ExperimentNonequivalent Group DesignRegression-Discontinuity
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