Students' individual differences in using visualizations: prospects of future research on program visualizations

  • Authors:
  • Essi Lahtinen

  • Affiliations:
  • Tampere University of Technology, Tampere, Finland

  • Venue:
  • Koli '08 Proceedings of the 8th International Conference on Computing Education Research
  • Year:
  • 2008

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Abstract

The range of available visualization tools for programming education is impressive but the research on them is biased mainly on testing the pedagogical effectiveness of the visualization tools. Most of the studies apply empirical techniques in controlled experimentation situations. The results on the field are summarized to be "markedly mixed". As learning, in constructivist point of view, is seen as a process affected by the individual also the use of visualizations in learning programming depends on the learner. Instead of only studying whether visualizations in general are effective for learning, we should also study in which conditions visualizations are effective for certain kinds of learners. Controlled experimentation is also critizised as a method of studying learning since it creates artificial learning situations that do not reveal the real needs of the learner. This article presents a literature review on the work carried out in the field of visualizations and analyzes the situation. On the basis of related work, we propose research questions for future work and discussion about research settings and methodology for achieving useful results for developing the field of visualizations further. The aim is that with this ground work we could better utilize the earlier work: visualization tools that have already been developed and the research results related to these tools.