Inequality has increased because technological progress over the past 40 years has complemented the productivity of skilled workers relative to unskilled workers.
Summary. A change in skilled technology is a change in production technology that favors skilled over unskilled people by increasing relative productivity and thus increasing relative demand.
The influential Skill-Biased Technological Change (SBTC) statement argues that technology will increase demand for skilled workers, allowing them to demand higher wages.
Technological change by factors means that productivity growth varies between countries with different skills and capital levels per worker.
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