The full manual of EL Version 1.0 User’s guide (pdf/Word
files of 34 pages) is available. The source
codes written in Fortran90 (a self-decompressing file) will be obtained upon
request to the author by e-mail. It is
convenient to decompress the file in a special file folder since you will have
10 files. The following are the contents
of the manual.
EL
Version 1.0 User’s guide
A set of subroutines for the methods of item response theory (IRT)
Equating/Linking with their asymptotic standard errors
by
Haruhiko Ogasawara
May, 2003
© H. Ogasawara
Email: hogasa@res.otaru-uc.ac.jp
Contents
1. General notes
2. Item parameter estimation
2.1 NRM1: Generation of quadrature points
2.2 ELPEV1: Item parameter estimation by the marginal maximum likelihood method
3. ELV1: IRT equating and linking with their asymptotic standard errors
4. An example
4.1 Data
4.2 Usage
4.3 Results
Appendix 1. Technical subroutines
Appendix 2. An example of extended problem size
References