Science {mirt}

Description of Science data

Description

A 4-item data set borrowed from ltm package in R, first example of the grm() function. See more complete documentation therein, as well as Karlheinz and Melich (1992).

Author(s)

Phil Chalmers [e-mail]

References

Karlheinz, R. and Melich, A. (1992). Euro-Barometer 38.1: Consumer Protection and Perceptions of Science and Technology. INRA (Europe), Brussels. [computer file]

Examples

## Not run: 
itemstats(Science)

mod <- mirt(Science, 1)
plot(mod, type = 'trace')

## End(Not run)