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Author Question: Threats to internal validity from regression to the mean in randomized, posttest-only, control-group ... (Read 87 times)

vicky

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on: Aug 4, 2018
Threats to internal validity from regression to the mean in randomized, posttest-only, control-group designs are controlled by
 
  A) nonrandom assignment of participants.
  B) random assignment of participants to groups.
  C) controlling for experimental effect.
  D) Both A and C

Question 2

A randomized, pretest-posttest, control-group design is
 
  A) an experimental design.
  B) not an experimental design.
  C) is not completely randomized.
  D) Both B and C


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lou

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Reply #1 on: Aug 4, 2018
Answer to Question 1

Answer: B

Answer to Question 2

Answer: A


vicky

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Reply #2 on: Aug 4, 2018
Thanks


lou

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Reply #3 on: Aug 4, 2018
Welcome :)


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