New NBER Research
27 February 2015
The idea that older scientists are less open to new ideas than younger scientists is tested by Mikko Packalen and Jay Bhattacharya, who find that papers published in biomedicine by younger researchers are more likely to build on new ideas than are those by their older colleagues. Their study also finds that collaborations of young first authors and more-experienced last authors are more likely to try out newer ideas than are teams with other composition.
26 February 2015
Courtney Coile explores how financial incentives from the Social Security Disability Insurance program affect retirement decisions. She finds that such incentives have a significant effect on retirement, particularly for those in poor health or with low education who may be more actively considering retirement at younger ages, and that increasing the stringency of DI screening would increase the expected working life of applicants.
25 February 2015
Calculating a set of annual environmental Engel curves for the United States from 1984 to 2002, Arik Levinson and James O'Brien find that that the average amount of pollution attributable to households at every level of income has been declining over time. Most of this decline is due to a shift in consumption patterns toward less-polluting goods, rather than a drop in the level of pollution for the goods being consumed.
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