The case of dependency of responses and response times: A modeling approach based on standard latent trait models

When modeling responses and response times in tests with latent trait models, the assumption of conditional independence between responses and response times might be too strong in the case that both data are gained from reactions to the same item. In order to account for the possible dependency of responses and response times from the same item, a generalization of the model of van der Linden (2007) is proposed. The basic idea consists in the...