Item selection function that delivers the next item by item id number, simulating a fixed test form.

This function just administers the next item in a form, with the within-person item ordering being governed by the ordering the rows in the resp dataframe.

Usage

select_sequential(pers, item, resp, resp_cur = NULL, adj_mat = NULL)

Arguments

pers

A dataframe of current respondent ability estimates.

item

A dataframe of current item parameter estimates.

resp

A long-form dataframe of all potential pre-simulated item responses.

resp_cur

A long-form dataframe of administered item responses.

adj_mat

An item-item adjacency matrix, where each entry is the count of individuals who have respondent to both item i and item j. See documentation for construct_adj_mat

Value

A long-form dataframe of all previously administered item responses with the new responses from this iteration appended to the end.