LSAT7: Description of LSAT7 data
Description
Data from Bock & Lieberman (1970); contains 5
  dichotomously scored items obtained from the Law School
  Admissions Test, section 7.References
Bock, R. D., & Lieberman, M. (1970). Fitting a response
  model for n dichotomously scored items.
  Psychometrika, 35(2), 179-197.