NDLI: An experiment on short-term effects of animated versus static visualization of operations on program perception

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An experiment on short-term effects of animated versus static visualization of operations on program perception

Content Provider	ACM Digital Library
Author	Nevalainen, Seppo Sajaniemi, Jorma
Abstract	Empirical evaluation of visualizations has so far been typically carried out by measuring the performance of participants that have been shown the visualization in relation to control group by grading programming tasks. Such studies tell little about what effects take place during the visualizations and how these effects build up into the learning effects. To address these issues, we are carrying out a series of experiments using visualization tools whose long-term effects are known.This paper presents a model of the cognitive phenomena that take place during visualization viewing sessions and describes an experiment where two visualization tools that differed in the amount of animation were used. The results show that even when participants were provided with rich visual information in the form of animations, they resorted heavily to the textual cues present on the screen. As the animation proceeded, participants started to follow visual cues more closely. However, if the names of the variables involved in the current operation were not in the visually cued area, participants tended to search for them in the program code. In the absence of animation, participants were more eager to browse the code in general.
Starting Page	7
Ending Page	16
Page Count	10
File Format	PDF
ISBN	1595934944
DOI	10.1145/1151588.1151591
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2006-09-09
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Programming education Roles of variables Mental models Programming knowledge Program visualization
Content Type	Text
Resource Type	Article

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