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Cocofpopcorn Cocofpopcorn
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6 years ago
A confound is a serious threat to ____ validity.
 
  a. external
  b. construct
  c. internal
  d. content
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Ahooey57Ahooey57
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6 years ago
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Cocofpopcorn Author
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Correct Slight Smile TY
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Thanks for your help!!
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Smart ... Thanks!
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