School Grades School grades may be considered as a surrogate measure for aptitude.[Footnote 6] As Table 8.3 indicates, youth with lower grades (i.e., mostly B's or lower, accounting for approximately 52 percent of the youth participating in the Advertising Tracking Survey) have higher propensity for military service. This difference remained relatively constant throughout the 13 months covered in this chapter. In addition, no differences between groups were found in the direct assessment of the effects of the events on September 11th on the likelihood that respondents would consider military service.
[Footnote 6] Other, more accurate (and more complex) surrogates for aptitude exist. See, for example, Orvis, B.R., Sastry, N., and McDonald, L.L. Military Recruiting Outlook: Recent Trends in Enlistment Propensity and Conversion of Potential Enlisted Supply (Santa Monica, CA: RAND Corporation, 1996). [back to paragraph]
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