Cited by 404Visual and Cognitive Learning ProcessesScience Education and PedagogySpatial Cognition and Navigation

The DOI matches its Crossref record; 57 of the 60 references it cites were found in a registry or an index; none of the 77 sources its claims cite is checked for support yet.

The Roles of Mental Animations and External Animations in Understanding Mechanical Systems

Open access
Hegarty, Mary, Kriz, Sarah, Cate, Christina·2003·Cognition and Instruction

Abstract

The effects of computer animations and mental animation on people's mental models of a mechanical system are examined. In 3 experiments, students learned how a mechanical system works from various instructional treatments including viewing a static diagram of the machine, predicting motion from static diagrams, viewing computer animations, and viewing static and animated diagrams accompanied by verbal commentaries. Although students' understanding of the system was improved by viewing both static and animated diagrams, there was no evidence that animated diagrams led to superior understanding of dynamic processes compared to static diagrams. Comprehension of diagrams was enhanced by asking students questions that required them to predict the behavior of the machine from static diagrams and by providing them with a verbal description of the dynamic processes. This article proposes that predicting motion from static diagrams engages students' mental animation processes, including spatial visualization, and provides them with information about what they do and do not understand about how the machine works. Verbal instruction provides information that is not easily communicated in graphics and directs students' attention to the relevant information in static and animated diagrams. The research suggests that an understanding of students' mental animation abilities is an important component of a theory of learning from external animations.

Overview

AI snapshot

Written from the paper’s full text.

TL;DR

Across three experiments, students learned about a flushing cistern from static diagrams, phase diagrams, animations, and verbal instruction, but animated diagrams were not superior to static diagrams for understanding dynamic processes. Prediction from static diagrams and verbal instruction improved comprehension, while spatial ability related to some outcomes without interacting with instructional condition.

Key findings

  • Animated diagrams showed no advantage over static diagrams. In Experiment 2, static media produced marginally more complete causal descriptions than animated media (M = 14.48 vs. 13.26), F(1, 92) = 3.35, p = .07; in Experiment 3, animation and three phase diagrams did not differ, though both outperformed a single static diagram.
  • Predicting system behavior from static phase diagrams improved causal understanding. In Experiment 1, predictors described more correct causal steps than non-predictors (M = 11.02 vs. 9.02), F(1, 92) = 10.97, p = .001; in Experiment 2, predictors also described more steps (M = 14.92 vs. 12.82), F(1, 92) = 10.70, p < .01.
  • Verbal instruction substantially improved causal descriptions. Combined groups described: static diagrams only M = 7.09 steps; kinematic diagrams M = 9.51; diagrams plus verbal M = 13.27; diagrams plus verbal plus prediction M = 14.21, F(1, 244) = 73.26, p < .001.
  • High-spatial students generally performed better on causal descriptions and troubleshooting in Experiments 1 and 2, but spatial ability did not interact significantly with instructional treatments; functional understanding was unaffected by experimental manipulations (Exp 1 M = 3.12, Exp 2 M = 3.28).

Methods

  • Three experiments with University of California, Santa Barbara undergraduates: Experiment 1 (N = 100), Experiment 2 (N = 100), and Experiment 3 (N = 58). Participants learned how a flushing cistern works from combinations of a static labeled diagram, three phase diagrams, computer animation, verbal commentary/text, and prediction questions.
  • Comprehension was measured by written or oral descriptions of the causal chain, scored against 19 steps; troubleshooting questions about possible faults; and function questions in Experiments 1 and 2. Spatial ability was measured with the Paper Folding test.
  • Main analyses compared instructional conditions, prediction, animation/static media, and spatial ability, using ANOVA and post hoc comparisons.

Limitations

  • The paper states that the animations may not have been optimal, that interactive animations allowing pace control might be more effective, that visual attention limits learning from simultaneous motions, and that viewing animation is passive. It also notes low variance in physics training and practical experience and that participants were novices.
  • The paper states that one phase-diagram limitation is that participants may not have been able to interpolate between the two stages shown, though all stages were shown in the animation.
  • Evident from the text: the prediction effect on troubleshooting was found in Experiment 1 but not replicated in Experiment 2; functional understanding showed no experimental effects; and direct evidence for internal visualization comes from a related eye-tracking study, not the reported experiments.

Model-written summary. Check it against the paper before relying on it.

Integrity signals

Registry

Crossref · 10.1207/s1532690xci2104_1

Cites

57 of 57 references verified0 citation errors · 0 not checkable

Statistics

7 tests recomputed · 0 with the reported and recomputed p on opposite sides of .05

Verification

Claims the paper makes

63 Own result · 50 Not checked yet · 39 Own interpretation · 12 Own method · 5 No basis given

Verify all 77 references — free account

Show all 112 claims

  • It may state two separate claims as one. 40
  • Probably not a substantial claim. 19
  • The quote only partly states this claim. 1
57 of 57
  • The paper relies on this without support.

    The flushing cistern is a representative complex mechanical system for studying how people learn from animations and static diagrams.

    “In this article, we examine the effects of computer animations and mental animation on people's comprehension of a relatively complex mechanical system, the flushing cistern (shown in Figure 1).”
  • The paper relies on this without support.

    The 19-step causal chain compiled by the authors is a correct and complete description of the flushing cistern's operation.

    “We compiled a list of 19 steps in the causal chain of events that results when the handle of the flushing cistern is pushed down.3 These were either explicitly stated or implied in the commentary that accompanied the animation, and each step was mentioned by at least one fifth of the participants.”
  • The paper relies on this without support.

    The flushing cistern's operation involves two causal chains of events that occur in tandem but are temporarily dependent on each other, making it a challenging comprehension task.

    “Understanding this mechanism is a challenging comprehension task because its operation involves two causal chains of events that occur in tandem but are also temporarily dependent on each other.”
  • The paper relies on this without support.

    The number of steps in the causal chain is a valid measure of understanding of the mechanical system.

    “we compared their answers to the first prediction question to their written causal descriptions of the system.”
  • The paper relies on this without support.

    The troubleshooting questions measure the ability to apply causal understanding of the system to solve novel problems.

    “Performance on the troubleshooting questions mirrored performance on the descriptions of system behavior, indicating that students could also apply their causal understanding of the system to solve novel problems.”
  • The paper relies on this without support.

    Force is not a visible property.

    “Force is not a visible property”
  • The paper relies on this without support.

    Language can express all types of information relevant to understanding a mechanical system, including kinematics, causal relations, and dynamic forces.

    “In contrast, language can express all of these types of information.”
  • The paper relies on this without support.

    Reading of static diagrams and text is self-paced and interactive.

    “In contrast, reading of static diagrams and text is self-paced and interactive in the sense that one can slow down or reread when one encounters a difficult passage.”
  • The paper relies on this without support.

    Our visual attention is typically focused on only one location at a time.

    “our visual attention is typically focused on only one location at a time”
  • The paper relies on this without support.

    Viewing an animation is a passive process.

    “Finally, viewing an animation is a passive process.”
  • The paper relies on this without support.

    The three phase diagrams represent the main events in students' mental representations of how the machine functions.

    “these three phases represent the main events in students' mental representations of how the machine functions”
  • The paper relies on this without support.

    The flushing mechanism depends on an appreciation of the forces underlying the operation of a siphon.

    “which depends on an appreciation of the forces underlying the operation of a siphon”
12 of 12

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

Statistics that don’t add up

Each reported p-value recomputed from its test statistic and degrees of freedom.

2 of 2

Statistics recomputed

Every reported test result, recomputed from its test statistic and degrees of freedom. A result shows as not adding up only once an independent check has confirmed it.

  • Doesn’t add upF(1, 92) = 6.05reported p = .01 · recomputed p = .016

    “F(1, 92) = 6.05, p = .01”

  • Doesn’t add upF(1, 92) = 9.19reported p < .001 · recomputed p = .003

    “F(1, 92) = 9.19, p < .001”

  • ConsistentF(1, 92) = 10.97reported p = .001 · recomputed p = .001

    “F(1, 92) = 10.97,p = .001”

  • ConsistentF(1, 92) = 8.66reported p < .01 · recomputed p = .004

    “F(1, 92) = 8.66, p < .01”

  • ConsistentF(1, 92) = 3.35reported p = .07 · recomputed p = .070

    “F(1, 92) = 3.35, p = .07”

  • ConsistentF(1, 92) = 10.7reported p < .01 · recomputed p = .002

    “F(1, 92) = 10.70,p < .01”

  • ConsistentF(1, 92) = 5.03reported p < .05 · recomputed p = .027

    “F(1, 92) = 5.03, p < .05”

7 of 7

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

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Citations

Cites

Show all 60 references

Research works printed but not linked: 5

  1. Hegarty, M. & Kozhevnikov, M. (1999). Spatial abilities, working memory and mechanical reasoning. In J. Gero & B. Tversky (Eds.), Visual and spatial reasoning in design (pp. 221-239). Sydney, Australia: Key Centre of Design and Cognition.
  2. Hegarty M., 1999, Journal of Educational Multimedia and Hypermedia, 8, 119
  3. Kriz, S. & Hegarty, M. (2003, August). Staring into space: Evaluating mechanical motion, mental animation and eye movements. Paper presented at the Twelth European Conference on Eye Movements, Dundee, UK.
  4. Narayanan, N. H., Suwa, M. & Motoda, H. (1995). Diagram-based problem solving: The case of an impossible problem. In Cognitive Science Society (Ed.), Proceedings of the 17th Annual Conference of the Cognitive Science Society (pp. 206-211). Hillsdale, NJ: Lawrence Erlbaum Associates, Inc.
  5. 10.1016/s0364-0213(99)80012-3 · DOI

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Metadata

Authors
Hegarty, M., Kriz, S., & Cate, C.
Affiliations
University of California, Santa Barbara (US)
Corresponding author
Hegarty, Mary
Venue
Cognition and Instruction
Published
2003-12
Volume
21
Issue
4
Pages
209-249
ISSN
  • 0737-0008 (ISSN-L)
  • 1532-690X
OpenAlex
W2156645509
Cited by
404
References
60
Citations by year
2026: 5 · 2025: 6 · 2024: 9 · 2023: 18 · 2022: 12 · 2021: 18 · 2020: 14 · 2019: 18 · 2018: 27 · 2017: 27 · 2016: 29 · 2015: 19 · 2014: 29 · 2013: 40 · 2012: 19
FWCI
7.15
Type
journal article
Language
en
Open access
Locations
Cognition and Instruction (publishedVersion)
Funders
Office of Naval Research (N00014)
Topics
  • Social Sciences › Psychology › Experimental and Cognitive Psychology › Visual and Cognitive Learning Processes
  • Social Sciences › Education › Science Education and Pedagogy
  • Social Sciences › Psychology › Experimental and Cognitive Psychology › Spatial Cognition and Navigation
Keywords
computer animation, mechanical systems, mental models, verbal instructions, spatial visualization, science learning, instructional design

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