“...compared to the animals treated with placebo.”
I thought a placebo was the psychological component of a blind test. Why would animals need to play the mind game?
I thought a placebo was the psychological component of a blind test. Why would animals need to play the mind game?
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Might be of interest...
What is a placebo?
Animals receiving inert treatments may show improvement due to causes other than direct placebo effects
https://www.veterinarypracticenews.com/what-is-a-placebo/