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Home Q & A Board Biology-Related Homework Help Medicine Nursing and Clinical
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jennwatson05 jennwatson05
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6 years ago
In a nonequivalent control group design, the most serious threat to internal validity is which of the following?
 
  A) Testing
  B) Selection
  C) Maturation
  D) History
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gracieelaine12gracieelaine12
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6 years ago
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This verified answer contains over 120 words.
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jennwatson05 Author
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6 years ago
You make an excellent tutor!
logbi
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Yesterday
Smart ... Thanks!
fgarza2146
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2 hours ago
Thanks for your help!!
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