Abbreviation and norming of the ICAR on Danish 6th to 10th grade pupils

A 5-item abbreviation of the ICAR 16-item sample test was created through exhaustive search. This was given to students in 6th to 10th grade in two Danish schools (N=236). Age was used as a criteria variable and showed the expected results. Results furthermore showed that the abbreviated test was too difficult for the younger students, but not for the older students.