Psyc312-6

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  1. Pre-test/Post-test controls for...
    • Selection,
    • history,
    • maturation, testing,
    • interactions with selection,
    • regression to the mean
  2. Why use a post-test only design?
    • increased protection from testing effects
    • BUT lower protection from selection effects
  3. Why use Solomon 4-group design?
    main advantage is a gain in external validity
  4. How is a single case design different from a case study?
    • case study is descriptive
    • no variables manipulated in CS
    • no variable control in CS
  5. What is a quasi-experimental design?
    • a design where we cannot use random assignment to groups but do manipulate an IV and measure a DV
    • 2 types: non-equivalent and interrupted time series
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25275
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Psyc312-6
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psyc312
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