01189nas a2200133   4500008003900000245003700039210003700076300001200113490000700125520082900132100001900961700001800980856005700998       2013                          d00aSpeededness and Adaptive Testing0 aSpeededness and Adaptive Testing  a418-4380 v383 a<p>
	Two simple constraints on the item parameters in a response&ndash;time model are proposed to control the speededness of an adaptive test. As the constraints are additive, they can easily be included in the constraint set for a shadow-test approach (STA) to adaptive testing. Alternatively, a simple heuristic is presented to control speededness in plain adaptive testing without any constraints. Both types of control are easy to implement and do not require any other real-time parameter estimation during the test than the regular update of the test taker&rsquo;s ability estimate. Evaluation of the two approaches using simulated adaptive testing showed that the STA was especially effective. It guaranteed testing times that differed less than 10 seconds from a reference test across a variety of conditions.</p>
1 aLinden, Wim, J1 aXiong, Xinhui  uhttp://jeb.sagepub.com/cgi/content/abstract/38/4/418