In a wine tasting experiment using 400 participants , Wiseman found that general members of the public were unable to distinguish expensive wines from inexpensive ones .
Another well - publicized double - blind taste test was conducted in 2011 by Prof. Richard Wiseman of the University of Hertfordshire .
In a wine tasting experiment using 400 participants , Prof. found that general members of the public were unable to distinguish expensive wines from inexpensive ones .
Another well - publicized double - blind taste test was conducted in 2011 by Prof. Richard Wiseman of the University of Hertfordshire .