Interesting. One trial I heard about concluded that pills that were coloured red were significantly more effective than the same ones in green - and both of these were significantly more effective again if delivered to the patient by a "doctor" wearing a lab coat.
Interesting. One trial I heard about concluded that pills that were coloured red were significantly more effective than the same ones in green - and both of these were significantly more effective again if delivered to the patient by a "doctor" wearing a lab coat.