Communication in Bargaining with an Endogenous Fund

Last registered on September 01, 2018


Trial Information

General Information

Communication in Bargaining with an Endogenous Fund
Initial registration date
August 31, 2018

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 01, 2018, 7:26 PM EDT

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


Primary Investigator

Virginia Commonwealth University

Other Primary Investigator(s)

PI Affiliation
New York University Abu Dhabi

Additional Trial Information

In development
Start date
End date
Secondary IDs
We will investigate how the ability to communicate via anonymous computerized text chat and observability of individual contributions affect behavior in a three-person legislative bargaining game with contributed funds. We will examine how these features of the game influence bargaining power and outcomes.
External Link(s)

Registration Citation

Baranski, Andrzej and Caleb Cox. 2018. "Communication in Bargaining with an Endogenous Fund." AEA RCT Registry. September 01.
Former Citation
Baranski, Andrzej and Caleb Cox. 2018. "Communication in Bargaining with an Endogenous Fund." AEA RCT Registry. September 01.
Experimental Details


Intervention Start Date
Intervention End Date

Primary Outcomes

Primary Outcomes (end points)
contributions, proposer allocations, votes to approve or disapprove allocations
Primary Outcomes (explanation)

Secondary Outcomes

Secondary Outcomes (end points)
chat messages in conditions with communication
Secondary Outcomes (explanation)

Experimental Design

Experimental Design
There are four experimental conditions, all of which involve a bargaining game in which players first make contributions to a group fund, and then a random proposer allocates the resulting group fund among players. Players can vote on whether or not to accept the proposal. If the proposal is rejected, another random proposer is selected.

Condition NCNO is the baseline without communication or observable contributions.
Condition CNO introduces communication without observable contributions.
Condition NCO introduces observable contributions without communication.
Condition CO combines both communication and observable contributions.
Experimental Design Details
Randomization Method
Randomization to experimental conditions is done in office by computer.
Randomization Unit
Groups of participants (sessions) are randomized to experimental conditions.
Was the treatment clustered?

Experiment Characteristics

Sample size: planned number of clusters
20 sessions
Sample size: planned number of observations
240 participants
Sample size (or number of clusters) by treatment arms
60 subjects (5 sessions) per experimental condition
Minimum detectable effect size for main outcomes (accounting for sample design and clustering)

Institutional Review Boards (IRBs)

IRB Name
Virginia Commonwealth University
IRB Approval Date
IRB Approval Number


Post Trial Information

Study Withdrawal

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Is the intervention completed?
Data Collection Complete
Data Publication

Data Publication

Is public data available?

Program Files

Program Files
Reports, Papers & Other Materials

Relevant Paper(s)

Reports & Other Materials