“…8 increased in Mexico following the trade liberalization, the cause of this increase in demand is hotly debated. One argument relies on between industry changes: liberalization led to an increase in relative prices of skill-intensive goods, benefiting the industries that employed skilled labour, as these industries expanded so did the demand for skilled labour (Revenga, 1997;Hanson and Harrison, 1999;Feliciano, 2001). The second argument relies on within industry changes: liberalization brought in skill biased technological changes that resulted in increased demand for skilled labour within each industry (Cragg and Epelbaum, 1996;Feenstra and Hanson, 1997).…”