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In an interactive digital simulation, traces of a learner’s progress, problem-solving attempts, self-expressions and social communications can entail highly detailed and time-sensitive computer-based documentation of the context, actions, processes and products. Methods based in data-mining, machine learning, model-building and complexity theory form a theoretical foundation for dealing with the challenges of time sensitivity, spatial relationships, multiple layers of aggregations at different scales, and the dynamics of complex behavior spaces.
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Data Challenges:Leveraging a Simulation
to Assess Learning
David GibsonCurtin University
The Premise
In an interactive digital simulation, traces of a learner’s progress, problem-solving attempts, self-expressions and social communications can entail highly detailed and time-sensitive computer-based documentation of the context, actions, processes and products.
New Psychometric Landscape
• A “do over” for performance assessment• New ways of performing & new methods of
data capture, analysis and display• Complex tasks and artifacts containing:– higher order thinking (e.g. decision sequences)– physical performances demonstrating skills– emotional responses
Sensors
• Wireless EEG– Facial muscles, emotional
clusters, raw EEG• Wireless Galvanic Skin
Conductance – Arousal level
• Eye Tracker– Gaze-point, duration, mouse-
clicks• Haptics– Button presses, head tilt
Anatomy of the System
Helen Chavez & Javier Gomez, ASU
Data Dashboard at ASUHelen Chavez and Javier Gomez
Research Questions
• What patterns are found within & between sensors?
• How do these patterns relate to baseline and experimental activities?
Interaction Traces = Evidence
There is a need for new frameworks, concepts and methods for measuring what someone knows and can do based on game interactions and artifacts created during serious play
Why? (It’s a mouthful) Ubiquitous, unobtrusive, interactive big data (fast, wide variety & voluminous) created by people working in digital media performance spaces
New Psychometrics
• What are some of the measurement and analysis considerations needed to address the challenges of finding patterns and making inferences based on data from digital learning experiences?
Example
• Contexts: Farm, Playground, Science Lab• Actions: Talking, Testing, Walking to…• Processes & Products: Test Results, Explanations
Clarke-Midura & Gibson, 2013
Example
• Ecological rationality & Empirical probabilityClarke-Midura & Gibson, 2013
Network Graphs
Digraphs illustrate structure in the causative factors during a time slice or event frame.
Network Analysis
Adjacency tablesCentrality
AF3 F7 F3 FC5 T7 P7 O1 O2 P8 T8 FC6 F4 F8 AF4 GX GY
AF3
F7
F3
FC5
T7
P7
O1
O2
P8
T8
FC6
F4
F8
AF4
GX
GY
Symbolic Regression
Automated search for algorithms
Clarke-Midura & Gibson, 2013
New Space for Performance
• Unfold in time • Cover a multivariate space of possible actions• Assets contain both intangible (e.g. value,
meaning, sensory qualities, and emotions) and tangible components (e.g. media, materials, time and space)
NOTE: Asset utilization during performance provides evidence of what a user knows and can do
Example
Students who had this pattern of resources were most likely to show evidence of forming a hypothesis
Clarke-Midura & Gibson, 2013
Performance Space Features
• Unconstrained complex multidimensional stimuli and responses
• Dynamic adaptation of items to user, which entails interactivity and dependency
• Nonlinear behaviors with both temporal and spatial components
NOTE: Higher order and creative thinking is supported in such a space
Thinking States
Rise inuncertainty and interest
Agreement & concentration drop
During thinking
Conclusion
Methods based in data-mining, machine learning, model-building and complexity theory form a theoretical foundation for dealing with the challenges of time sensitivity, spatial relationships, multiple layers of aggregations at different scales, and the dynamics of complex behavior spaces.