Description Usage Format Source

This dataset includes multidimensional two parameter logistic model (M2PL) item parameter estimates for two dimensions and two groups. The Form 1 items are from a "new" form and the Form 2 items are from an "old" form. There are 16 common items between the two forms.

1 |

A list of length two. The first element `pars`

is a list of length two.
Each of the list elements in `pars`

is a 80 x 3 matrix of item parameters. Element
one is for `Form 1`

, and element two is for `Form 2`

. The first two columns
in each matrix are for the slope parameters and the third column is for the parameter
related to item difficulty.

The second list element in `reckase9`

is a matrix identifying the common items
between the two sets of parameters in `pars`

. That is, the first column in
`common`

identifies the rows in `pars$form1`

that are common items.
The second column identifies the corresponding set of common items in `pars$form2`

.

Reckase, M. D. (2009). Multidimensional item response theory. New York: Springer.

plink documentation built on May 1, 2019, 8:07 p.m.

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