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Author Question: The major threat to the internal validity of research on articulation problems in young children is ... (Read 124 times)

xclash

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on: Jun 20, 2018
The major threat to the internal validity of research on articulation problems in young children is
 
  a. regression.
  b. instrumentation.
  c. mortality.
  d. maturation.
  e. selection.

Question 2

The internal validity threat that randomization eliminates in an experimental study is
 
  a. selection bias.
  c. instrumentation.
  b. subject effects.
  d. history.


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peilian

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

D

Answer to Question 2

A


xclash

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Reply #2 on: Jun 20, 2018
Thank you


peilian

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Reply #3 on: Jun 20, 2018
No problem :)


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