Module 6: Descriptive, Normative, and Impact Evaluation Designs

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Use of Control Variables• R<strong>and</strong>om assignment impossible?– Rule out alternative explanations bystatistically controlling for them:• prior performance or prevalence levels• socioeconomic status• prior soil quality• weather / climateIPDET 36 36
Use of Natural Variation• Inconsistent implementation? Turn itinto an advantage• Useful evidence includes:– less extensive implementation• smaller (or no) impact– better quality implementation• more positive results <strong>and</strong>/or fewer negativeimpactsIPDET 37 37
Page 1 and 2: IPDETModule 6:Descriptive, Normativ
Page 3 and 4: Evaluation Design• The total proc
Page 5 and 6: Approach to DevelopmentEvaluationFo
Page 7 and 8: Matrix Elements• Design Matrix Pl
Page 9 and 10: Matrix Elements (page 2)• Data So
Page 11 and 12: Answering DescriptiveQuestions• D
Page 13 and 14: One-shot• Represented as:- X O 1
Page 15 and 16: Cross-sectional• Evaluation quest
Page 17 and 18: Before-and-after Designs• Also ca
Page 19 and 20: Time Series Designs• Look for cha
Page 21 and 22: Time Series• Represented as:- O 1
Page 23 and 24: Longitudinal• Evaluation question
Page 25 and 26: Case Study• Represented as:O 1O 2
Page 27 and 28: Answering Cause-EffectQuestions•
Page 29 and 30: Impact Designs• Can use experimen
Page 31 and 32: Impact and Multi-site andCluster Ev
Page 33 and 34: Before-and-AfterMeasures• Change
Page 35: Random Assignment• Random: people
Page 40 and 41: 9 Causal TracingEvidence Sources•
Page 42 and 43: Experimental Design• Called the
Page 44 and 45: Randomized ControlTrials (RCTs)•
Page 46 and 47: Examples of QuasiexperimentalDesign
Page 48 and 49: Case Study Design• Used when the
Page 50: To continue on to theNext Module cl

Module 6: Descriptive, Normative, and Impact Evaluation Designs

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