Author Question: The single largest methodological concern in longitudinal studies is a. cohort effects. b. ... (Read 47 times)

moongchi

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The single largest methodological concern in longitudinal studies is
 
  a. cohort effects.
  b. attrition.
  c. trend effects.
  d. retrospective errors.

Question 2

Longitudinal research that calls for identifying participants in a study and following them into the future involves a
 
  a. withdrawal design.
  b. cohort design.
  c. prospective design.
  d. cross-sectional design.



Silverbeard98

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Answer to Question 1

b

Answer to Question 2

c



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