There is some evidence that a scrolling design may reduce breakoffs in mobile web surveys compared to a paging design, but there is little empirical evidence to guide the choice of the optimal number of items per page. We investigate the effect of the number of items presented on a page on data quality in two types of questionnaires: with or…

Pedagogic Conversational Agents are computer applications that can interact with students in natural language. They have been used with satisfactory results on the instruction of several domains. The authors believe that they could also be useful for the instruction of Secondary Physics and Chemistry Education. Therefore, in this paper, the…

This study investigated the effect of several different modes of test administration on scores and completion times. In Experiment 1, paper-based assessment was compared to computer-based assessment. Undergraduates completed the computer-based assessment faster than the paper-based assessment, with no difference in scores. Experiment 2 assessed…