In another ominous sign that the U.S. economy is slowing, labor productivity decreased 0.3% in the second quarter, while first quarter productivity was revised from an increase to a negative reading and input costs rose.

FORBES: U.S. Productivity Falls As Labor Costs Rise Putting Pressure On Weak Job Markets

Groopman observed that hope does not just involve a mind-to-body connection, but also a body-to-mind connection, where neural input about one's physical condition serves as a moderator of positive and negative emotions.

CNN: How hope can help you heal