BILOG- MG for Windows is used to analyze data on dichotomous items from a single group or multiple groups.


A  Academic and non-academic licenses for IRT software products
  • SSI, Inc. offers academic and non-academic (production and commercial) licenses for its IRT software products.
  • Academic licenses for BILOG-MG 3, IRTPRO 2.1, and PARSCALE 4 for Windows are available separately.
  • Academic licenses apply to end users that intend to use the software exclusively for academic research and instruction.
  • Academic licenses can be ordered using the online PDF order forms providing an academic email address.
  • Non-academic licenses apply to end users that intend to use the software for assessment.
  • Non-academic license agreements are prepared on a case to case (individual) basis. For details, see:


B  BILOG-MG 3 by Michele Zimowski, Eiji Muraki, Robert Mislevy & Darrell Bock
  • Graphical user interface
  •  Efficient analysis of binary items including multiple choice or short-answer items scored right, wrong, omitted, or not-presented
  •  Capable of large scale production analysis, and handling of multiple groups
  •  Performs item analysis and scoring of any number of subtests or subscales
  •  Non-equivalent groups equating
  •  Vertical equating of test forms
  •  Differential item functioning (DIF)
  •  Detection and correction for parameter trends over time (DRIFT)
  •  Calibration and Scoring of tests in two-stage testing procedures
  •  Estimation of latent ability or proficiency distributions
  •  Provision for items inserted in tests to estimate item statistics, but not included in calculation of examinee scores ("variant items")
  •  Item fit statistics, theoretical and empirical reliability
  •  Information curves and reliabilities for putative test forms
  •  Presentation quality IRT graphics, can be imported in Word, Access, etc.
  •  Detailed online HELP documentation includes description of interface, syntax, and examples.



Copyright© 2014 欣隆資訊有限公司  41253 台中市大里區光榮街56號3樓,  TEL:(04)2225-4956 FAX: (04)2225-4956