Unit 4: Kinds of study time points

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xiongashely
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Unit 4: Kinds of study time points
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2013-11-06 17:28:55
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  1. What is a Longitudinal's study time points?
    • - 2 or more time points
    • - can establish time sequences
    • - can establish causality (if design is experimental)
    • - can describe change
    • - can describe current conditions
  2. What is a Longitudinal method and it's advantages and disadvantages?
    -It examines age changes in one group of subjects at more than one point in time.

    Adv: Allows study of development over extended period of time, same people studied so they act as own control (has own background, genetic, ethnic)

    Disadv: Very expensive, staff costs increase from yr to yr., and people dropout
  3. What is a Cohort Sequential's study time points?
    • - 1 measurement time point, sequential age groups (mulitple group)
    • - cannot establish time sequences & causality
    • - can weakly describe change
  4. What is a Cross-sectional's study time points?
    • - 1 measurement time point, one age group (snap shot)
    • - cannot establish time sequences, causality, or describe change
    • - can describe current conditions
  5. What is a Cross-Sectional Method and it's advantages and disadvantages?
    -Examines several groups and their age differences not changes

    Adv: less expensive and dropouts minimized because of short time period

    Disadv: lack of comparability, gives no idea of direction of change group may take, and reveals nothing about continuity of development
  6. What is the Utility of Follow-up Studies?
    Can help answer developmental questions with less time and expense than a traditional study.
  7. What is the role age in studying development?
    - Has descriptive value but not explanatory value

    - Can tell us what is happening but not why
  8. At every research stage, what is the time point?
    6: Evaluation    2+

    5: Intervention  2+

    4: Prediction     2+

    3: Explanation   1+

    2: Description   1+

    1: Exploration   1

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