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Home Q & A Board Other Fields Homework Help Education Studies
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hawkmom52 hawkmom52
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6 years ago
A researcher plans a special series of classroom lessons designed to increase students' verbal skills. A control group does not have the lessons. Which of the following would most likely be threats to internal validity?
 
  a. History
  b. Hawthorne effect
  c. Teacher expectations effect
  d. Mortality
  e. b and c

Ques. 2

A researcher is studying the social effects of being learning disabled. This study is ex post facto because the
 
  a. subjects are already known to differ on the dependent variable.
  b. subjects are already known to differ on the independent variable.
  c. a and b
  d. None of these are true.
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kiavashkiavash
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6 years ago
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hawkmom52 Author
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6 years ago
You make an excellent tutor!
kiara23247843
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Yesterday
Thanks for your help!!
terriroberts96
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2 hours ago
This helped my grade so much Perfect
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