This paper uses a life cycle model to predict the induced entry effects of a reduction in the effective tax rate applied to Social Security Disability Insurance recipients from 100% under the status quo to a 50% tax rate (i.e. $1 dollar benefit reduction for every $2 earned over a disregard...

Facebook’s Gross National Happiness (FGNH) indexes the positive and negative words used in the millions of status updates submitted daily by Facebook users. FGNH has face validity: it shows a weekly cycle and increases on national holidays. Also, happier individuals use more positive words and...

This paper analyzes the complexity of the "contraction fixed point problem": compute an epsilon-approximation to the fixed point "V"*Gamma("V"*) of a contraction mapping Gamma that maps a Banach space "B-sub-d" of continuous functions of "d" variables into itself. We focus on "quasi linear...