It is the major problem of all cognitive sciences to deal with subjectivity. On the other hand, in order to figure out what is cognition or psychology, one must ultimately deal with this problem. As a starter, I wonder if there is any study about identicalness of perceptions among subjects. Are the perceptions of two different subjects on an object identical? In other words, can the perceptions of two subjects about a tomato differ from each other? One may experience the redness of tomato as what the other call blue.
Is there a way to compare the subjective experiences of two different subjects upon an object?
cognitive psychology;perception