Transcription of Types of Group Comparison Research
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Types of Group Comparison Research
Stephen E. Brock, , NCSPEDS 250 Causal-Comparative Research11 Causal-Comparative Research &Single Subject ResearchStephen E. Brock, , NCSP California State University, Sacramento2 Correlation vs. Group ComparisonCorrelationalGroup Comparison1group2or more groups 2or more variables1independent variableExtent to which 2 or more variables are relatedto each otherExtent to which 2 or more groups are differentfrom each otherIdentifies relationshipsamong variablesMakes comparisonsbetween groups3 Types of Group Comparison ResearchCausal-comparative AKA Ex Post Facto (Latin for after the fact). Researcher does not form the groups. Groups to be compared are formed before the study begins. A pre-existing variable defines the Experiment Researcher forms the groups . Groups to be compared are not formed before the study begins. Individuals are not randomly assigned. Intact groups are randomly assigned to a treatment Experiment Researcher forms the groups.
Types of Group Comparison Research Causal-comparative AKA Ex Post Facto (Latin for after the fact). Researcher does not form the groups. Groups to be compared are formed before the study begins. A pre-existing variable defines the group. …
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