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Author Question: How can scientific studies control for the Hawthorne effect, placebo effect, and researcher ... (Read 43 times)

frankwu

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on: Aug 20, 2018
How can scientific studies control for the Hawthorne effect, placebo effect, and researcher bias?

Question 2

Synthesis of norepinephrine and collagen requires _____.
 a. selenium
  b. zinc
  c. copper
  d. iron


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ebe

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Reply #1 on: Aug 20, 2018
Answer to Question 1

To control for Hawthorne effect, placebo effect, and researcher bias, scientists use blinding (especially double-blinding); use randomization; and control for confounding variables.

Answer to Question 2

c


frankwu

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Reply 2 on: Aug 20, 2018
Wow, this really help

yeungji

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Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

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