“The Mozart effect can refer to:

A set of research results that indicate that listening to Mozart’s music may induce a short-term improvement on the performance of certain kinds of mental tasks known as “spatial-temporal reasoning;”[1]
Popularized versions of the theory, which suggest that “listening to Mozart makes you smarter”, or that early childhood exposure to classical music has a beneficial effect on mental development;
A US trademark for a set of commercial recordings and related materials, which are claimed to harness the effect for a variety of purposes. The trademark owner, Don Campbell, Inc.,[2] claims benefits far beyond improving spatio-temporal reasoning or raising intelligence, defining the mark as “an inclusive term signifying the transformational powers of music in health, education, and well-being.” ”

http://en.wikipedia.org/wiki/Mozart_effect

The EFFECT is so well known that one of the builders who was participating in the Extension of my house a couple of years ago listened to the Music that I had playing on my portable sound system at lunch-break and Declared in mixed DELIGHT and Wonder … ‘ You’re Self Medicating with Mozart aren’t you? ‘

He was Right of course. I’ve suffered from clinical depression and the Effect does Help and does have a tranquilizing effect in times of stress … it has been suggested that Mozart himself was suffering from a Psychiatric disorder .. possibly aspergers syndrome …

http://www.lyen.net/gpage150.html