2 ms·

> I assume knowlege of the experiment could influence the outcome. That's why you do randomisation and double-blinding.

• s1artibartfast 2mo ago
  Doesnt matter. Telling someone they are in a study about seeing little people may influence if they see little people.
  • eru 2mo ago
    Hence the placebo control.
    • s1artibartfast 2mo ago
      Thats not how placebos work. It Still can impact the results.