| 1. | Randomized field experiments are the strongest research designs for assessing program impact.
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| 2. | Environmental variables can also influence results and usually arise from poor research design.
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| 3. | There are several different research approaches, or research designs, that qualitative researchers use.
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| 4. | Research designs include experimental studies, quasi-experimental studies, pretest-postest designs, and others.
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| 5. | You need a coherent research design before you start collecting data.
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| 6. | The two basic approaches to research design include between-subjects design and within-subjects design.
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| 7. | This is important because much research has been done with single-subject research designs.
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| 8. | Or, they may want to know how to implement an appropriate research design.
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| 9. | Meta-analysis can be done with single-subject design as well as group research designs.
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| 10. | Non-experimental research designs can be broadly classified into three categories.
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