ConstructMap is software designed for conducting simple psychometric analyses on categorical data. It has been developed as a companion to Constructing Measures (Wilson, 2005), an introductory book on assessment in the social sciences.
ConstructMap can run analyses on dichotomous data using the Rasch Model or on polytomous data using the Partial Credit Model or the Rating Scale Model. In addition to the model results, ConstructMap can produce several plots, such as Wright Maps, Item Fit Plots and Item Characteristic Curves, to help in the interpretation of those results.