Peers and Motivation at Work

Last registered on September 02, 2018

Pre-Trial

Trial Information

General Information

Title
Peers and Motivation at Work
RCT ID
AEARCTR-0001105
Initial registration date
March 07, 2016

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 07, 2016, 1:06 AM EST

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

Last updated
September 02, 2018, 2:30 PM EDT

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

Locations

Region

Primary Investigator

Affiliation
University of Minnesota

Other Primary Investigator(s)

PI Affiliation
Yale University
PI Affiliation
University of Michigan

Additional Trial Information

Status
Completed
Start date
2015-02-02
End date
2016-03-31
Secondary IDs
Abstract
This study comprises two experiments. The first experiment randomly assigns tea-harvesting workers to locations on fields to estimate peer effects in output. The second is an incentivized choice experiment that measures workers' willingness to pay for higher-ability peers.
External Link(s)

Registration Citation

Citation
Brune, Lasse, Eric Chyn and Jason Kerwin. 2018. "Peers and Motivation at Work." AEA RCT Registry. September 02. https://doi.org/10.1257/rct.1105
Former Citation
Brune, Lasse, Eric Chyn and Jason Kerwin. 2018. "Peers and Motivation at Work." AEA RCT Registry. September 02. https://www.socialscienceregistry.org/trials/1105/history/33798
Experimental Details

Interventions

Intervention(s)
Intervention Start Date
2016-03-07
Intervention End Date
2016-03-31

Primary Outcomes

Primary Outcomes (end points)
Our outcome for the peer effects estimation experiment is the daily log output of tea.

Our key outcome for the incentivized choice experiment is the willingness to pay for higher-ability peers. See the pre-analysis plan for details.
Primary Outcomes (explanation)

Secondary Outcomes

Secondary Outcomes (end points)
Secondary Outcomes (explanation)

Experimental Design

Experimental Design
Our peer effects estimation experiment consists of two steps:
1. Random assignment of workers to peers.
2. Using randomly-assigned peers and daily output data to estimate a linear-in-means model of peer effects.

Our incentivized choice experiment consists of three steps:
1. Random assignment of workers to peers. This was implemented starting in late February.
2. A survey containing the incentivized choice experiment to elicit WTP. This begins on March 7, 2016.
3. Workers’s positions are changed to implement the choices for the 10% of people who chose faster peers. This happens immediately after the survey ends, and is done to make the elicited choices incentive-compatible.
Experimental Design Details
Randomization Method
Randomization done in office by a computer (for random peer assignment).
Randomization done in the field on tablets (for implementation of the incentivized choices with p=0.1)
Randomization Unit
For the first experiment, randomization is within-individual at a level of cycle day.

For the second experiment, randomization is at the individual level.
Was the treatment clustered?
No

Experiment Characteristics

Sample size: planned number of clusters
999 workers
Sample size: planned number of observations
999 workers
Sample size (or number of clusters) by treatment arms
Not applicable – no treatment arms. Each worker is randomly assigned to peers.
Minimum detectable effect size for main outcomes (accounting for sample design and clustering)
IRB

Institutional Review Boards (IRBs)

IRB Name
IRB Health Sciences and Behavioral Sciences, University of Michigan
IRB Approval Date
2015-02-02
IRB Approval Number
HUM00095368
Analysis Plan

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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