anton tchipev technological change and outsourcing competing or complementary explanations for the rising demand skills during 1980s quaderno n 06 09 decanato della facoltà di scienze economiche via g buffi 13 ch 6900 lugano by universit a svizzera italiana istituto ricerche maderno 24 6904 switzerland fax 0041 0 58 666 4 662 tel 226 e mail lu unisi last revision 18 12 2006 thispaperrepresentsashortenedandrevisedversionofachapterofmyph d dissertation attheuniversityofkonstanzentitled trendsinwageinequality theroleoftrade technical labor market institutions abstract this paper combines two of popular approaches used in trade versus technology debate factor content approach cost share regression across manufacturing industries resulting method allows to decompose skill upgrading at industry level into component tributed residual surprisingly computer investment explains attributed better than resid ual suggesting that may have contributed higher disintegration