1. S

    Item Response Theory (IRT) and Response Time (Millisecond)

    Greetings from Spain, I have a question My doctoral thesis professor and I want to apply IRT to a series of neuropsychological tests (STROOP, Ekman, Discounting Test among others) The bibliography on the subject is almost nonexistent. Can this model be applied for continuous variables? Can ms...
  2. Z

    What test to use ?

    Hello, I'm conducting a neuro imagery research (MRI) with 3 groupes Pre/Post training. I need to know if there is any structural differences between the 3 groups. Group 1 : N = 12 Group 2 : N = 6 Group 3 : N = 12 For a total of 30 subjects. Each subjects passed 2 MRI, one before (PRE)...