Computer Use and Earnings in Britain
利用英国NCDS数据估计计算机使用对收入的影响，发现横截面估计显著而固定效应估计不显著，且允许系数因人而异时结果变化很大，表明计算机使用对部分人群存在显著收入溢价。
This paper estimates various models of the effect of computer use on earnings using recent NCDS data. The cross-section estimates are large and significant while the standard fixed effects estimates are small or insignificant. The panel estimates change considerably once we allow the coefficients to differ across individuals. Conditional on assumptions about when individuals use computers, conventional panel estimates may not identify the crucial parameters and alternative methods are needed. We conclude that there was a substantial premium associated with computer use for some individuals in the UK.