Mortgage and Debt Illusion

Last registered on June 19, 2022


Trial Information

General Information

Mortgage and Debt Illusion
Initial registration date
September 22, 2020

Initial registration date is when the trial was registered.

It corresponds to when the registration was submitted to the Registry to be reviewed for publication.

First published
September 22, 2020, 7:44 AM EDT

First published corresponds to when the trial was first made public on the Registry after being reviewed.

Last updated
June 19, 2022, 5:54 AM EDT

Last updated is the most recent time when changes to the trial's registration were published.


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Primary Investigator

University of Sydney

Other Primary Investigator(s)

PI Affiliation
The Australian National University
PI Affiliation
University of Technology Sydney
PI Affiliation
University of New South Wales
PI Affiliation
College of William and Mary
PI Affiliation

Additional Trial Information

In development
Start date
End date
Secondary IDs
Prior work
This trial does not extend or rely on any prior RCTs.
Recent research shows that the presentation format of information affects consumer perception of the information. This study examines this phenomenon in the context of home loan choices by testing whether people’s perception of mortgage loan sizes is format-dependent.
External Link(s)

Registration Citation

Agnew, Julie et al. 2022. "Mortgage and Debt Illusion." AEA RCT Registry. June 19.
Experimental Details


Two interventions are introduced in the experiment. More details will be available after the experiment is completed.
Intervention Start Date
Intervention End Date

Primary Outcomes

Primary Outcomes (end points)
More information about the outcomes will be available after the experiment is completed.
Primary Outcomes (explanation)

Secondary Outcomes

Secondary Outcomes (end points)
Secondary Outcomes (explanation)

Experimental Design

Experimental Design
We conduct an online survey experiment with a sample of representative Australian households. More details will be available after the experiment is completed.
Experimental Design Details
Not available
Randomization Method
Randomisation by computer by the survey panel company.
Randomization Unit
The unit of randomisation is individual. More details will be available in the experimental design after the experiment is completed.
Was the treatment clustered?

Experiment Characteristics

Sample size: planned number of clusters
1,000 individuals
Sample size: planned number of observations
1,000 individuals
Sample size (or number of clusters) by treatment arms
Treatment Group 1: 500 individuals
Treatment Group 2: 500 individuals
Minimum detectable effect size for main outcomes (accounting for sample design and clustering)

Institutional Review Boards (IRBs)

IRB Name
The University of Sydney Human Research Ethics Committee
IRB Approval Date
IRB Approval Number