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Research Design

Comparisons. Campbell and Stanley (1966) suggest that in order to obtain the minimum of useful scientific information a researcher must make at least one formal comparison. In the following section, various commonly used designs are described. . Formal comparisons are important elements of some of these designs. In fact, it is often the lack of a formal comparison that weakens a design, and as a consequence lessens the confidence of the researcher in making any claims based on the research findi31719

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Research Design

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    1. Research Design

    2. Comparisons

    3. Research Design Symbols

    4. Time Sequence

    5. Pre-experimental Designs

    6. One-shot case study

    7. One-group pretest--posttest design

    8. Intact-group comparison

    9. True Experimental Designs

    10. Randomness

    11. Posttest only control group design

    13. Pretest--posttest control group design

    15. Solomon four-group design

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