1. Barker, P., van Schaik, P., & Famakinwa, O. (2007). Building electronic performance support systems for first-year university students. Innovations in Education and Teaching International, 44(3), 243–255.
2. Cacioppo, J. T., & Petty, R. E. (1982). The need for cognition. Journal of Personality and Social Psychology, 42, 116–131.
3. Carroll, J., & Rosson, M. B. (1987). The paradox of the active user. In J. Carroll (Ed.), Interfacing thought: Cognitive aspects of human-computer interaction (pp. 80–111). Cambridge, MA: MIT Press.
4. Carswell, A., & Venkatesh, V. (2002). Learner outcomes in an asynchronous distance education environment. International Journal of Human-Computer Studies, 56, 475–494.
5. Cohen, J. (1988). Statistical power analysis for the behavioral sciences (2nd ed.). Hillsdale, NJ: Erlbaum.