Are Consumers Poorly-Informed about Fuel Economy?
Last registered on September 04, 2016

Pre-Trial

Trial Information
General Information
Title
Are Consumers Poorly-Informed about Fuel Economy?
RCT ID
AEARCTR-0001421
Initial registration date
September 04, 2016
Last updated
September 04, 2016 8:24 AM EDT
Location(s)
Region
Primary Investigator
Affiliation
New York University
Other Primary Investigator(s)
PI Affiliation
MIT Sloan
Additional Trial Information
Status
Completed
Start date
2012-12-01
End date
2016-07-31
Secondary IDs
Abstract
We implement two randomized control trials providing fuel economy information to consumers shopping for automobiles.
External Link(s)
Registration Citation
Citation
Allcott, Hunt and Christopher Knittel. 2016. "Are Consumers Poorly-Informed about Fuel Economy?." AEA RCT Registry. September 04. https://www.socialscienceregistry.org/trials/1421/history/10543
Experimental Details
Interventions
Intervention(s)
We implement two randomized control trials providing fuel economy information to consumers shopping for automobiles.
Intervention Start Date
2012-12-01
Intervention End Date
2015-05-31
Primary Outcomes
Primary Outcomes (end points)
Fuel consumption rating of vehicle purchased.
Primary Outcomes (explanation)
Secondary Outcomes
Secondary Outcomes (end points)
Secondary Outcomes (explanation)
Experimental Design
Experimental Design
There are two experiments, one in auto dealerships and one in an online marketing panel.
Experimental Design Details
Randomization Method
Randomization for the dealership experiment is done by the iPad's random number generator. Randomization for the online experiment was done by the implementer using a computer.
Randomization Unit
Individual consumer.
Was the treatment clustered?
No
Experiment Characteristics
Sample size: planned number of clusters
Dealership experiment: N is approximately 2000
Online experiment: N is approximately 5000
Sample size: planned number of observations
Dealership experiment: N is approximately 2000 Online experiment: N is approximately 5000
Sample size (or number of clusters) by treatment arms
Observations are split approximately equally between treatment groups.
Minimum detectable effect size for main outcomes (accounting for sample design and clustering)
IRB
INSTITUTIONAL REVIEW BOARDS (IRBs)
IRB Name
MIT Committee on the Use of Human Subjects
IRB Approval Date
1900-01-01
IRB Approval Number
1401006118
Post-Trial
Post Trial Information
Study Withdrawal
Intervention
Is the intervention completed?
No
Is data collection complete?
Data Publication
Data Publication
Is public data available?
No
Program Files
Program Files
Reports and Papers
Preliminary Reports
Relevant Papers