As tactical investors and market historians, we are intrigued by the long cycles of market leadership, always curious to understand what drives these seismic shifts.  One idea that continually pops up in our studies is the notion that bear markets frequently tend to produce changes in asset class superiority.  This study examines the relative performance of three pairs of major asset classes: small vs. large, value vs. growth, and international vs. domestic.  The historical record seems to corroborate our intuitive thesis that bear markets and asset class leadership rotations are connected, either due to changes in fundamentals or market psychology.