Defining a variable of foreign language ability
Subtitle: an application of item response theory
By: door John Henry Adrian Lawrence de Jong
Publisher: [s.n.]
Published: 1991
Place of publication: Netherlands
Language: eng
Number of pages: 135
Subjects: Item response theory; Language and languages; Ability testing; Communicative competence
Notes: Thesis (doctor)--Universiteit Twente, 1991.

Includes bibliographical references.