that could protect surplus (“security”). But the joint achievement of security and prosperity had to escape a paradox … conflict when defense capability is fixed, but may allow for security and prosperity when defense capability is endogenous …. Some economic shocks and military innovations deliver security and prosperity while others force societies back into a trap …

We develop a theoretical model of security investments in a network of interconnected agents. Network connections … introduce the possibility of cascading failures due to an exogenous or endogenous attack depending on the profile of security … networks, is that because security investments create positive externalities on other agents, there will be underinvestment in …

four percent decline in household income. We also find evidence indicating that job security is an important channel for …

This paper describes the findings from a new, and intrinsically interdisciplinary, literature on happiness and human …

emotions such as enjoyment and happiness. They are also less likely to report a range of negative experiences, like sadness …

We measure the impact of individuals' looks on life satisfaction/happiness. Using five data sets, from the U.S., Canada … beauty. Beauty raises happiness: A one standard-deviation change in beauty generates about 0.10 standard deviations of … additional satisfaction/happiness among men, 0.12 among women. Accounting for a wide variety of covariates, particularly effects …