Does lowering corporate tax encourage more investment?

Lower corporate tax may leave businesses more money for equipment, hiring and research, but how they use those funds also depends on demand expectations and their financial position. Any effect of lower revenue on public investment, and benefits awarded to investment that would have happened anyway, should be considered too. The question does not assume a particular tax-rate change has a proven effect. It asks how to compare broad rate cuts with support tied to actual investment, and which measures should be used.