Srdjan Verbic | Searcharxiv

arXiv2014

Does it matter if you answer slowly?

In this paper, we have analyzed item response times measured at a large scale unspeeded low stakes test for primary-school students. We have demonstrated the existence of significant difference in the response time for boys and girls as well as difference in response time of correct and incorrect answers on this test. We have also demonstrated existence of the warm up effect for this test. The results show that responses given by girls exhibit much greater warm up effect and that difference appears to be the most important cause of the difference on the test level.

physics.ed-ph↗

arXiv2009

Test item response time and the response likelihood

Test takers do not give equally reliable responses. They take different responding strategies and they do not make the same effort to solve the problem and answer the question correctly. The consequences of differential test takers' behavior are numerous: the test item parameters could be biased, there might emerge differential item functioning for certain subgroups, estimation of test taker's ability might have greater error, etc. All the consequences are becoming more prominent at low-stakes tests where test takers' motivation is additionally decreased. We had analyzed a computer based test in Physics and tried to find and describe relationship between the item response time and the item response likelihood. We have found that magnitude of such relationship depends on the item difficulty parameter. We have also noticed that boys, who respond faster, in average, give responses with greater likelihood than the boys who respond slower. The same trend was not detected for girls.

physics.ed-ph↗