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Home Q & A Board Science-Related Homework Help Psychology Developmental Psychology
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chillywilly4242 chillywilly4242
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6 years ago
The final phase of human clinical trials usually involves
 
  A) placebo controls.
  B) double-blind procedures.
  C) yoked controls.
  D) all of the above
  E) both A and B
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estiee3estiee3
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6 years ago
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chillywilly4242 Author
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6 years ago
You make an excellent tutor!
Fanmkreyol
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Yesterday
this is exactly what I needed
foxrcng11
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2 hours ago
Thanks for your help!!
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