Using a model followed in earlier research, correlations
were computed between undergraduate and
graduate grade-point averages as well as between
these and standard graduate and professional
school tests. Approximately 1200 law school students
constituted a professional school sample and
another 1200 students in mathematics, physics, and
chemistry constituted a graduate school sample.
Earlier findings were replicated. In addition, it is
shown that both graduate and professional school
grades form simplex matrices and that early grades
are more highly predictable from aptitude tests
than later grades. There is evidence for a single
simplex matrix extending through the four undergraduate
and three post-graduate years only in the
law school sample. There are two separate simplex
matrices for the two levels in the graduate school
sample. Correlations between test scores and undergraduate
grades are biased to very low values in the
professional school sample by a compensatory selection
system, but both aptitude and achievement
tests are clearly more highly correlated with freshman
than with senior grades in the graduate school
sample. In this sample, however, the advanced test
in the discipline is more highly correlated with first
year graduate grades than with senior grades.
These data suggest that the first year in a new academic
learning situation represents a greater intellectual
challenge than subsequent years.
Lin, Pang-chieh & Humphreys, Lloyd G. (1977). Predictions of academic performance in graduate and professional school. Applied Psychological Measurement, 1, 249-257. doi:10.1177/014662167700100211
Lin, Pang-chieh; Humphreys, Lloyd G..
Predictions of academic performance in graduate and professional school.
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