“…It seems fair to say that, as with other government programs, research and analysis have played a regrettably limited role in setting and changing the duration of UI benefits. There has, of course, been significant work on the disincentive effects of extended benefits (see the summary in table 6.6), and the U.S. Department of Labor has com missioned evaluations of the three most recent emergency extended benefit programs (Corson and Nicholson 1982;Corson, Grossman, and Nicholson 1986). However, it is also clear that the research thus far has not fully addressed some of the major issues that need to be investi gated in forming policy on the duration of benefits, such as the optimal duration of benefits, how duration should change over the business cycle, and the merits of EB triggers other than the IUR and TUR.…”