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Author Question: A limitation of ex post facto research is that a. null hypotheses cannot be tested. b. random ... (Read 120 times)

D2AR0N

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on: Jun 20, 2018
A limitation of ex post facto research is that
 
  a. null hypotheses cannot be tested.
  b. random sampling is not possible.
  c. behavioral observations are difficult and time consuming.
  d. comparison groups cannot be used.
  e. generalizations concerning cause and effect are difficult to justify.

Question 2

Choose the internal validity problem that is associated with the situations listed. Extreme scores move toward the mean.
 
  a. history
  b. maturation
  c. experimenter effect
  d. statistical regression
  e. diffusion


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jasonq

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Reply #1 on: Jun 20, 2018
Answer to Question 1

E

Answer to Question 2

D


D2AR0N

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Reply 2 on: Jun 20, 2018
Thanks for the timely response, appreciate it

diana chang

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Reply 3 on: Yesterday
Excellent

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