Table 4.

Proportion of Correct Decisions for Different SPRT Settings for UCCT and MCCT.

Condition	$\alpha =0.05$			$\alpha =0.10$
	${\delta }^{*}=1.25$	${\delta }^{*}=2.50$	${\delta }^{*}=5.00$	${\delta }^{*}=1.25$	${\delta }^{*}=2.50$	${\delta }^{*}=5.00$
Random item selection
MIRT	0.865	0.866	0.865	0.866	0.865	0.865
UIRT	0.850	0.851	0.851	0.848	0.850	0.850
Item selection by maximization at the ability estimate
MIRT	0.894	0.894	0.894	0.894	0.894	0.894
UIRT	0.837	0.838	0.837	0.837	0.837	0.837
Item selection by maximization at the cutoff point
MIRT	0.895	0.895	0.895	0.895	0.895	0.895
UIRT	0.845	0.845	0.845	0.845	0.845	0.845

Note. Simulations for classifications with UIRT and MIRT with a flexible test length. SPRT = sequential probability ratio test; UCCT = unidimensional computerized classification testing; MCCT = multidimensional computerized classification testing; MIRT = multidimensional item response theory; UIRT = unidimensional item response theory; $\alpha =\beta$ = acceptable error rates; ${\delta }^{*}$ = percentile point that was used to calculate the boundary of the indifference region.