Step 2. Item selection
Many item selection rules have been proposed for CAT. Maximum Fisher
information (BIRNBAUM, 1968) is most commonly applied, but Fisher interval
information (VEERKAMP; BERGER,1997), Kullback-Leibler information (CHANG;
YING, 1996; VELDKAMP; VAN DER LINDEN, 2002), or mutual information
(WEISSMAN, 2007) might be applied as well.