The adaptive test with its workings in view. A sidebar holds the settings: the
questionnaire (one of the examples, one for each IRT model, or a csv of your own,
see read_questionnaire), the scales and the standard error at which
each one stops. The main area has, side by side, the current item and a chart of the
estimate and standard error after every answer, then the progress of each scale and
the history of every answer given.
Examples
if (FALSE) { # \dontrun{
shiny::fluidPage(mod_cat_ui("cat"))
} # }