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Home Q & A Board Science-Related Homework Help Psychology
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killian killian
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9 years ago
A substance that has no psychological or physical effect of its own, but appears to have   
      an effect because of the beliefs of the people using it is called a(n) ______.            
      a.   initiative substance               c.   placebo                        
      b.   confounding factor               d.   neuter
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Smiling Face with Open Mouth
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f_zah1f_zah1
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