This research investigated the use of the Rasch
simple logistic model in obtaining test-free ability
estimates. Two tests each of word, picture, symbol,
and number analogies were administered to college
and high school students. Differences between
scores on each pair of tests were analyzed to determine
whether the ability estimates were independent
of the tests employed. The results indicate that
raw-score ability estimates are influenced by the
difficulty of the items used in measurement but
that Rasch ability estimates are relatively independent
of the difficulty of these items. The need is discussed
for additional research in which an individualized
item-presentation procedure is used with
the Rasch model.
Tinsley, Howard E & Dawis, Rene V. (1977). Test-free person measurement with the Rasch simple logistic model. Applied Psychological Measurement, 1, 483-487. doi:10.1177/014662167700100404
Tinsley, Howard E.; Dawis, Rene V..
Test-free person measurement with the Rasch simple logistic model.
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