Discussion to i-15

15 Discussion

It is well known that model parameters are not invariant to shifts in policy regimes. Since Lucas' excellent paper on the subject, economists have paid lip service to the problems raised by regime shifts. Most policy analyses, however, ranging from columns in national magazines and newspapers to more formal work, continue to use models whose parameters are implicitly assumed to be immune to reg...

Scientific Discussion I. Scientific Discussion

IZA Discussion Paper No. 15

Immigrant Participation in Social Assistance Programs* The share of foreigners in the German social assistance program exceeds their population share and continues to grow. This study tests whether higher foreigner welfare dependence is due to foreign-native differences in behavior as opposed to exogenous characteristics. The determinants of welfare dependence are analyzed using data from the G...

I-15: Offering Fertility Services to Whom? With Specific Regards to The Welfare of The Child

Panel discussion section I

Kochukhov: The Doppler imaging problem is intrinsically ill-conditioned. It is not correct to characterize this problem by the number of unknowns. We are using regularization, and regularization effectively introduces a set of additional equations which smoothes the map in our case; in the case of the maximum entropy method, it selects an image with maximum entropy. So actually if I count equat...