This dissertation is composed of two parts. The first part is: Investment Horizon And The Market For Corporate Control: The Defensive Role Of Long-Term Investments. The relationship between managers' investment choice and takeover pressure has triggered intense debate since the mid 80's, yet the issue remains unresolved. In this part of the research, we view investment horizon choice as a strategic move that puts target management in a better position in an anticipated future takeover contest. Our insight is that managers interested in retaining control may prefer long-term investments because the high uncertainties associated with these investments increase the expected takeover prices, thereby reducing the takeover probabilities. This fin...