Mery, Y., DeFrain, E., Kline, E. & Sult, L. (2014). Evaluating the effectiveness of tools for online database instruction. Communications in Information Literacy, 8, 70-81.
Nichols Hess, A. K. (2014). Web tutorials workflows: How scholarship, institutional experiences, and peer institutions’ practices shaped one academic library’s online learning offerings. New Library World, 115, 87-101.
Sachs, D. E., Langan, K. A., Leatherman, C. C., & Walters, J. L. (2013). Assessing the effectiveness of online information literacy tutorials for millennial undergraduates. College & Undergraduate Libraries, 20, 327-351.
Scales, B. J., Nicol, E., & Johnson, C. M. (2014). Redesigning comprehensive library tutorials: Theoretical considerations for multimedia enhancements and student learning. Reference & User Services Quarterly, 53, 242-252.
Shiao-Feng, S. & Kuo, J. (2010). Design and development of web-based information literacy tutorials. The Journal of Academic Librarianship, 36, 320-328.
While all interactivity we can produce in tutorials will help encourage engaged learning, some elements will help more than others. I've created a spectrum of interactivity below based on a literature review and my own observations.