1988 年 15 巻 24 号 p. 1-24
Latent trait theory, or item response theory, started as a mental test theory, or as a social attitude measurement theory, dealing solely with the dichotomous response level. It has been developed tremendously in the past generation both in theory and in practice, however, to include the graded response level, the nominal response level and the continuous response level, both in the unidimensional and in the multidimensional latent spaces. The present paper attempts to give the reader some perspectives of this comprehensive theory, without intending to be a fair review of all the published papers in this area. Some promising applications, including the computerized adaptive testing and the Rorschach diagnosis, are also given.
