The test under investigation comprises of continuous items, whose response space is not limited to a special interval (such as [0;1]). Instead, my items are developed for measuring the execution speed of movements over a given time interval held constant for every item. My question are:
- whether there are IRT models for capturing such test situations (next to factor analysis),
- if there are model extensions for classification needs (such as the case for the mixed rasch model, for instancE)
- whether there are software solutions (practically in R)
Thanks in advance for every idea and comment!