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Ecological Research for Integrating Behavior Design into Product Interfaces
Dave Miller, IDSANew York University
Theoretical Underpinnings
Running Washing Machine: 10-30%
Water Heating:70-90%
Energy used in Washing Clothes
Maytag Commercial Washing Machines
Cycle Information Labels
Front Load Legend Top Load Legend
• No effective feedback mechanism
• Large number of washes per week (approx. 200/site)
• Benign
Reasons for using Washing Machines
• Inline flow meters– Measure hot and cold
water flow
• Datalogging system– Open Source Hardware:
Arduino Microcontroller– Software determines
cycle selected
Measurement Systems
High Proximity Low Proximity Control
Authority
No Authority
No Prompt
Experiment I Outline
High Proximity Low Proximity Control
Authority
²(1,N=792) = 0.069, p = .79 ²(1,N=1080) = 0.58, p = .45
No Authority
²(1,N=774) = 0.98, p = .32 ²(1,N=877) = 1.07, p = .30 ²(1,N=439) = 0.13, p = .71
Experiment I Results
Control Experiment
78% 77%
22% 23%
Control Experiment
80% 78%
20% 22%
Control Experiment
72% 68%
28% 32%
Control Experiment
68% 72%
32% 28%
Control Experiment
76% 78%
24% 22%
Simulated washing machine control panel with integrated energy meter – red box added for emphasis
This approach did not significantly change behavior
Previous Research: Midden and Ham, Technical University of Einthoven
The Philips iCat acts as an embodied consciousness, providing a normative influence on users to use efficient settings
Previous Research: Midden and Ham, Technical University of Einthoven
Experiment II Design
Current label
Cycle recommended for clothing type
Eco Label
Cycle recommended for clothing type
+Energy saving cycle
Alternate Label
Cycle recommended for clothing type
+Water Temperature
No Prompt
Experiment II
• Performance anxiety• Different types of
laundry loads• Non-independence of
events• Other influences– Contamination from
other signs or other buildings
Threats to Validity
Dave Miller IDSA
New York University Gallatin School of Individualized StudyStanford University Persuasive Technology LabIndustrial Designers Society of America – New York Chapter
[email protected]@davebmiller