Sampling, Recruiting, and Retaining Diverse Samples
Sampling, Recruiting, and Retaining Diverse Samples
Methodology Application Series
Dr. Lorey Wheeler Research Assistant Professor
November 20, 2015
Session Overview
? Research Questions and Target Populations
? Problems with Common Methods
? Sampling Strategies
? Common Methods
? Random sampling ? Stratified sampling ? Convenience sampling
? Recruitment and Retention Strategies ? Issues Related to Study Validity
Copyright Lorey Wheeler (2015)
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Why is this topic important?
? Sampling and recruiting participants are basic steps in almost every research enterprise and are fundamental to determining the quality of the resulting research
? Need to be sure that we have studied the group targeted by our research
? Well-established research sampling and recruitment methods developed and used successfully with middleclass European American groups may not work as well with ethnic minority or economically disadvantaged populations
Copyright Lorey Wheeler (2015)
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RESEARCH QUESTIONS AND IDENTIFICATION OF THE TARGET POPULATION
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Research Questions
? How best to answer research question with design
? With disadvantaged populations, ethnical considerations for cultural relevance of research questions
? Group Comparative Designs
? Examining cross-group comparisons ? E.g., on incidence rates or relationships between variables
? Within Group (Ethnic Homogenous) Designs
? Examining variability or heterogeneity within a group to understand specific mechanisms operating
? E.g., culturally-relevant risk and protective factors that might inform culturally relevant preventive interventions
Copyright Lorey Wheeler (2015)
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