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Author Question: In research that is conducted over a period of time, the participants naturally get older. If the ... (Read 117 times)

mydiamond

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on: Jun 19, 2018
In research that is conducted over a period of time, the participants naturally get older. If the researcher is not interested in the effects of age on the dependent variable, then the changes in age pose which of the following threats to the validity of the research?
 
  a. Attrition
  b. Maturation
  c. History
  d. Selection

Question 2

Longitudinal designs are to cross-sectional designs as
 
  a. participant variable designs are to time-series designs.
  b. before-after designs are to comparison-group designs.
  c. comparison-group designs are to before-after designs.
  d. historical designs are to current designs.


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olivia_paige29

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Reply #1 on: Jun 19, 2018
Answer to Question 1

b

Answer to Question 2

b


mydiamond

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Reply 2 on: Jun 19, 2018
Excellent

Joy Chen

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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