Score contribution per author:
α: calibrated so average coauthorship-adjusted count equals average raw count
A statistical study by R. Jackman and S. Roper (1987) concluded, in contradic tion of much circumstantial evidence, that current high levels of une mployment in the United Kingdom and other European countries are not due to structural mismatches in the labor market. This conclusion has been widely cited in other work. However, there are several methodol ogical reasons, ranging from data problems to macroeconomic behavior, why this study's calculations may seriously understate the true exte nt of structural unemployment. Some of the other work that has relied on these calculations may thus be in need of revision. Copyright 1988 by Blackwell Publishing Ltd