The researchers conducted a blind test to ensure fair results.
A test where the participants do not know certain details to avoid bias.
In a blind test, the volunteers did not know which drug they were taking.
A method of testing where the subjects are unaware of the treatment they receive.
ด้วยพจนานุกรมภาพและแฟลชการ์ดที่ทรงพลังฟรี
