00444nas a2200145   4500008004500000245005100045210005100096260001200147300001000159490000600169100002200175700001800197700002300215856006000238       2018                        Engldsh  00aImplementing Three CATs Within Eighteen Months0 aImplementing Three CATs Within Eighteen Months  c09/2018  a38-550 v61 aSpoden, Christian1 aFrey, Andreas1 aBernhardt, Raphael  uhttp://iacat.org/jcat/index.php/jcat/article/view/70/3301710nas a2200133   4500008003900000245008100039210006900120300001200189490000700201520128300208100002001491700001801511856004701529       2017                          d00aHeuristic Constraint Management Methods in Multidimensional Adaptive Testing0 aHeuristic Constraint Management Methods in Multidimensional Adap  a241-2620 v773 aAlthough multidimensional adaptive testing (MAT) has been proven to be highly advantageous with regard to measurement efficiency when several highly correlated dimensions are measured, there are few operational assessments that use MAT. This may be due to issues of constraint management, which is more complex in MAT than it is in unidimensional adaptive testing. Very few studies have examined the performance of existing constraint management methods (CMMs) in MAT. The present article focuses on the effectiveness of two promising heuristic CMMs in MAT for varying levels of imposed constraints and for various correlations between the measured dimensions. Through a simulation study, the multidimensional maximum priority index (MMPI) and multidimensional weighted penalty model (MWPM), as an extension of the weighted penalty model, are examined with regard to measurement precision and constraint violations. The results show that both CMMs are capable of addressing complex constraints in MAT. However, measurement precision losses were found to differ between the MMPI and MWPM. While the MMPI appears to be more suitable for use in assessment situations involving few to a moderate number of constraints, the MWPM should be used when numerous constraints are involved.1 aBorn, Sebastian1 aFrey, Andreas  uhttp://dx.doi.org/10.1177/0013164416643744