a r t i c l e i n f o JEL codes: J23 J3 J4 J5 D4 F66 Keywords: Labor demand Input heterogeneity Labor adjustment costs Wage and employment determination Multiple fixed effects Establishment-level functions At first blush, most advances in labor demand were achieved by the late 1980s. Since then progress might appear to have stalled. We argue to the contrary that significant progress has been ma...

To the Editors: Lim et al. (1) found no relationship between the ''Consumption of aspartame-containing beverages and incidence of hematopoietic and brain malignancies'' by surveying retired individuals about their consumption of diet sodas and determining whether they had an increase in brain tumors 5 years later. In fact, this study design was not able to test the hypothesized relationship bec...

Immunocyochemical labeling was applied to follow the developmental changes in the calcium-binding proteins parvalbumin (PV), calbindin D28k (CaB), and calretinin (CaR) during fetal and infant development of Macaca monkey dorsal lateral geniculate nucleus (LGN). For all three proteins, LGN cell body and retinal ganglion cell (RGC) axon labeling patterns changed temporally and spatially over deve...

he links among trade, technological changes, and worker earnings have been the subject of intense research during the past few decades. The current literature on this subject shows that trade liberalization and technological changes are the main drivers of demand for skilled workers and a rise in the wage premium. In the present article, a panel of 134 Iranian manufacturing industries over the ...