Responding to Positive and Negative Past Interactions_Online

Last registered on July 29, 2025

Pre-Trial

Trial Information

General Information

Title
Responding to Positive and Negative Past Interactions_Online
RCT ID
AEARCTR-0016047
Initial registration date
May 19, 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
May 21, 2025, 3:46 PM EDT

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

Last updated
July 29, 2025, 1:15 PM EDT

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

Locations

Region

Primary Investigator

Affiliation
Tilburg University

Other Primary Investigator(s)

Additional Trial Information

Status
In development
Start date
2025-05-23
End date
2025-08-11
Secondary IDs
Prior work
This trial does not extend or rely on any prior RCTs.
Abstract
Discrimination is widespread across the world, and a variety of contexts. Discrimination has further been widely studied through the use of field experiments (for an overview, see Bertrand and Duflo, 2017), with two dominant theories emerging: taste-based (Becker, 1957) and statistical discrimination (Phelps, 1972; Arrow, 1973). However, the study of discrimination thus far in the literature has been static: studies have looked at one-off interactions and the response to discrimination in those. Past work in Uganda (IRB FUL 2024-015) has illustrated that discrimination among refugees and Ugandans is dynamic in the sense that past interactions influence discriminatory behavior in the future. In particular, perceived negative discrimination in the past increased the likelihood of negative discrimination in the future. This is not the case with positive discrimination. The aim of this project is to document the persistence of discrimination among a different sub-population, and identify the mechanisms more cleanly through different sub-treatments. I have since developed a theoretical model to rationalize these results, which creates novel predictions that this new project will test.
External Link(s)

Registration Citation

Citation
Wicker, Till. 2025. "Responding to Positive and Negative Past Interactions_Online." AEA RCT Registry. July 29. https://doi.org/10.1257/rct.16047-1.1
Experimental Details

Interventions

Intervention(s)
The study will run over two weeks, with two parts. the first part mirrors the lab-in-the-field experiment in Uganda, where across two stages, a participant is both a worker completing tasks, and a manager delegating tasks. In this case, the focus will be on ethnic discrimination in the US among men. Managers in the first stage will be either white or black (signaled by their name), and will either allocate tasks favorably, equally, or unfavorably for the participant. After completing the task, the participant becomes the manager in the next stage, and allocates tasks between two workers: one white and one black. In this setting, I introduce a third stage, where participants will have 1 minute time to solve as many tasks as possible. The name of the manager in this stage is disclosed to the participants. This is to test for micro-foundations of anticipated discrimination.

One week later, participants are invited back for a second round of the game. First, they are asked to recall how many tasks they were assigned last week. Afterwards, they play the game again, this time as a manager.
Subsequently, they are shown 10 allocations across managers and workers, and are incentivized to recall the names of the managers and allocations accordingly. Subsequently, they play the game again, as a manager. Afterwards, they will be assigned one of the rounds of the game, as a worker. Then, then will be randomized across 6 different arms: 1) the normal game; 2) direct retaliation against the previous manager; 3) costly mistakes; 4) inefficient non-even allocation; 5) letting players know there are future rounds; 6) non-white, non-black player.
Afterwards, there will be a PEQ, asking about discriminatory attitudes, and the recall of negative and positive past experiences with managers.
With a different sample, the same setup will be used, however to look at the same setup among white men (with an affirmative action policy component); as well as to look at the role of previous joyful destruction, a dictator game setup, and noisy signals on future discriminatory behavior
Following a pilot study of the previous iteration, the focus has been placed on racial discrimination, rather than gender-based discrimination.
The current experimental design allows to distinguish between four micro-foundations of retaliatory discrimination, which have been pre-registered with this registry.
50% of respondents will fill in detailed beliefs in the first stage of the experiment.
Intervention (Hidden)
Intervention Start Date
2025-07-29
Intervention End Date
2025-08-11

Primary Outcomes

Primary Outcomes (end points)
Allocation of tasks across workers in second stage.
Time taken to complete task in first stage.
Recall of past events shown.
Effort put in into third effort task.
Primary Outcomes (explanation)

Secondary Outcomes

Secondary Outcomes (end points)
Secondary Outcomes (explanation)

Experimental Design

Experimental Design
A lab experiment will be conducted on Prolific. Individuals will be randomized across several treatments, as outlined in more detail above.
The allocation of tasks is pre-determined, based on data from a pilot study.
Experimental Design Details
Randomization Method
Randomization is done via qualtrics
Randomization Unit
individual
Was the treatment clustered?
No

Experiment Characteristics

Sample size: planned number of clusters
Same as the number of observations
Sample size: planned number of observations
100 observations per treatment arm.
Sample size (or number of clusters) by treatment arms
100 observations per treatment arm. Fewer for the sub-samples
Minimum detectable effect size for main outcomes (accounting for sample design and clustering)
IRB

Institutional Review Boards (IRBs)

IRB Name
TiSEM Institutional Review Board
IRB Approval Date
2025-05-02
IRB Approval Number
TiSEM_RP2233
Analysis Plan

There is information in this trial unavailable to the public. Use the button below to request access.

Request Information

Post-Trial

Post Trial Information

Study Withdrawal

There is information in this trial unavailable to the public. Use the button below to request access.

Request Information

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