GLOBALIZATION AND ITS IMPACT ON MEDIA IN CHINA: A COMPARATIVE SEMIOTIC CONTENT ANALYSIS OF VISUAL REPRESETATION IN CHINESE AND US MAGAZINE ADVERTISEMENTS 1979-1998 To assess their validity, I estimate the basic model using test score data from the National Education Longitudinal Study (NELS) and high school completion rates from the Common Core of Data (CCD). Neither of these has nearly the breadth of the SAT data, so the estimates presented here are not as precise as those above, but the point estimates are reassuringly similar
