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Preference for Explainable AI Experiment

Last registered on March 20, 2025

Pre-Trial

Trial Information

General Information

Title
Preference for Explainable AI Experiment
RCT ID
AEARCTR-0015581
Initial registration date
March 16, 2025

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
March 19, 2025, 11:56 AM EDT

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

Last updated
March 20, 2025, 6:04 PM EDT

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

Locations

Region

Primary Investigator

Affiliation
Harvard University

Other Primary Investigator(s)

Additional Trial Information

Status
In development
Start date
2025-03-18
End date
2025-03-22
Secondary IDs
Prior work
This trial does not extend or rely on any prior RCTs.
Abstract
Lab experiment to investigate individual preference for getting information generated by AI and the explanation of how the AI made that prediction. The experiment is done in a real-stakes decision where a Black-Box AI informs a decision to allocate an actual US$10, 000-loan.
External Link(s)

Registration Citation

Citation
Chan, Alex. 2025. "Preference for Explainable AI Experiment." AEA RCT Registry. March 20. https://doi.org/10.1257/rct.15581-1.4
Experimental Details

Interventions

Intervention(s)
Individuals make a decision to determine how a private lender allocate a $10000-loan. Participants are randomized into a neutral treatment where payoffs are not tied to actual loan repayment outcome, or a "lender-aligned" treatment where they have with direct stakes tied to loan repayment.
Intervention (Hidden)
2X3X5X3 design
2: neutral treatment where payoffs are not tied to actual loan repayment outcome, or a "lender-aligned" treatment where they have with direct stakes tied to loan repayment
3: race-gender of prospective borrowers revealed to be different AND no decision to choose whether to see predicted default risk or not, race-gender of prospective borrowers NOT revealed AND no decision to choose whether to see predicted default risk or not, race-gender of prospective borrowers revealed to be different AND with decision to choose whether to see predicted default risk or not
5: always see explanation of AI, never see explanation of AI, option to see explanation of AI with no salience, option to see explanation of AI with hint that financial factors might be used by AI, option to see explanation of AI with hint that financial factors and demographics might be used by AI
3: 3 versions of explanation for those who see or chose to see explanation. One vague description of how neural network AI risk prediction works, one that plus a SHAP interpretation of why the high risk borrower was deemed as such just based on financials, one that plus a SHAP interpretation of why the high risk borrower was deemed as such just based on financials AND race and gender
Intervention Start Date
2025-03-18
Intervention End Date
2025-03-22

Primary Outcomes

Primary Outcomes (end points)
(1) Binary decision of whether the participant want to see an explanation of how the AI made the prediction of the default risk of the borrowers before making a loan allocation decision
(2) Binary decision of whether the participant want to see the predicted default risk of the borrowers before making a loan allocation decision
Primary Outcomes (explanation)
Both study information-avoidance decisions.

Secondary Outcomes

Secondary Outcomes (end points)
(3) Whether the participant want to allocate 90% of the loan to the low-risk borrower and 10% to the high-risk borrower, or 50% to each
(4) How much, to reduce the second participant’s bonus at a personal cost of $0.01 per $1.00 reduction, up to the full $10 (3 scenarios -informed, not informed, chose not to be informed about explanation) - within subject
Secondary Outcomes (explanation)
This gets at whether the information changes the actual loan allocation decision (i.e. to see if the information influences decision)

Experimental Design

Experimental Design
I experimentally test how individual's preference for information regarding an AI is influenced by certain factors.

(Full design attached and randomization flow attached in this pre-registration as pdf/docs before the experiment launch)
Experimental Design Details
I ask participants
that if their survey response is randomly selected, what their answers and your answers
alone will do. The participants will have to answer correctly (namely, choose the answer
“Determine how the private lender will allocate the $10, 000 loan between the two real
borrowers”) to be included in the final analysis sample. This sample exclusion restriction
criteria is pre-registered.

To maintain data integrity, the experiment employs multiple bot-prevention mechanisms.
First, I include CAPTCHA authentication at multiple stages (once at the start of the
experiment and once towards the end). Second, I include a “honey-pot” question designed
to be opaque to humans but readable by automated scripts. Third, I include a “Let It Go”
test7 where I ask the participant to copy and paste lyrics under copyright protection into
a text box (LLMs like ChatGPT are “not allowed” to do so because of copyright). I also
time the CAPTCHA authentication response at later stages of the survey to detect non-
human engagement (if the response time was longer than the initial CAPCHA response by
twice). Finally, attention and comprehension checks are included to ensure participant
understanding of task requirements. The participants will have to pass both the bot
detection and the attention check to be included in the final analysis sample. This
sample exclusion restriction criteria is also pre-registered.
Randomization Method
Randomization done using Qualtrics' in-built function
Randomization Unit
individual
Was the treatment clustered?
No

Experiment Characteristics

Sample size: planned number of clusters
See below
Sample size: planned number of observations
3,000
Sample size (or number of clusters) by treatment arms
Evenly for non-lender-aligned and for lender-aligned for main arm. Same shares for a variant of the main arm where race-gender descriptors for borrowers are replaced by odd/even number birth-day/month. Main arm, in particular active choice of whether to see explanation will be 3X sampled relative to other arms in this group.
1/3 as much as above, but within this even between non-lender-aligned and lender-aligned for an arm similar to main arm except that participants also have a choice to see the predicted default risk generated by AI or not. Same numbers for a variant of the main arm where race-gender descriptors for borrowers are replaced by odd/even number birth-day/month.
3000 in total.
Minimum detectable effect size for main outcomes (accounting for sample design and clustering)
Supporting Documents and Materials

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IRB

Institutional Review Boards (IRBs)

IRB Name
Harvard University Institutional Review Board
IRB Approval Date
2025-02-25
IRB Approval Number
IRB-25-0040

Post-Trial

Post Trial Information

Study Withdrawal

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Intervention

Is the intervention completed?
No
Data Collection Complete
Data Publication

Data Publication

Is public data available?
No

Program Files

Program Files
Reports, Papers & Other Materials

Relevant Paper(s)

Reports & Other Materials