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Author Question: When there is a significant time lapse between pretest and posttest measures, the confounding ... (Read 86 times)

serike

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  • Posts: 542
on: Aug 4, 2018
When there is a significant time lapse between pretest and posttest measures, the confounding variable most likely to affect results would be
 
  A) history.
  B) regression to the mean.
  C) instrumentation.
  D) selection.

Question 2

Threats to internal validity due to ________ are greatest when a long time has passed between pretest and posttest measurements.
 
  A) regression to the mean
  B) history
  C) effects of testing
  D) scoring errors
 
  Fill in the blank with the correct answer.


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xoxo123

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

Answer: A

Answer to Question 2

Answer: B


serike

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  • Posts: 542
Reply 2 on: Aug 4, 2018
:D TYSM

mohan

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Reply 3 on: Yesterday
Gracias!

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