The disciplines have been much revised, and many new disciplines have become more specialized, researching smaller and smaller areas. Because of this, "interdisciplinary" research is often prized in today's academy, though it can also be made difficult both by practical matters of administration and funding and by differing research methods of different disciplines. In fact, many new fields of study have initially been conceived as interdisciplinary, and later become specialized disciplines in their own right – a recent example is cognitive science.