The information actually showed up in a couple of research papers on research documentation sites I encountered on the web.
Yes it can create an anchor. If you find it easier to study with classical music than without then yes you have an anchor. That may not be a bad thing when it comes to later recall. Since classical music is usually just music no vocals you can anchor what you study to the melodies themselves.
Not all student who listened to rock and roll music have trouble with recalling what they studies. It was found that they had a strong memory for the music that was played and simply recalled that in their mind when it came to recalling the information.
If you can recreate the sound during an exam you will be able to fire the anchor that you created whilst studying. The problem with bringing it into the classroom is it's generally not the type of environment created in the classroom.
Research has also shown that baroque type music is good for studying, it helps to maintain the Accelerative Learning State.
Classical seems to fall into the some of it is okay but others is not. If it pulls your attention, then even baroque would create an anchor.
There is another important factor to consider when it comes to playing music whilst you are studying. What is your learning style.
The real point is if you create an anchor like listening to a certain type of music while you are studying, you want to be able to remember the pieces you were listening to when you need to recall the information, or be able to hear the music again. So if your learning style does not require music... there is no need to create a potential anchor.
Some links that might be of interest. http://www.linkstew.org/noid/1660.html http://clearinghouse.mwsc.edu/manuscripts/304.asp
Like with all research data involving humans there are so many variables that can make any reseach null and void. I have seen other papers that indicate that the volume of music plays a role. How about classical music that is played too loud?
Also most of the research are arrived at by tests/exam scores. At what point have we got enough numbers to determine whether we found the base line?
We are humans and most everything we do is somehow anchored. One of the anchoring techniques is repetition.
Alex