Peer effects on authoritarianism – Evidence from the Norwegian Armed Forces

Last registered on November 17, 2022


Trial Information

General Information

Peer effects on authoritarianism – Evidence from the Norwegian Armed Forces
Initial registration date
November 11, 2022

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
November 17, 2022, 3:27 PM EST

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



Primary Investigator

University of Oslo

Other Primary Investigator(s)

PI Affiliation
PI Affiliation
PI Affiliation
PI Affiliation

Additional Trial Information

On going
Start date
End date
Secondary IDs
Prior work
This trial does not extend or rely on any prior RCTs.
We study how peer effects shape authoritarianism using a field experiment in the Norwegian Armed Forces. In particular, we ask: Does random assignment to people with different levels of authoritarian orientations make soldiers more or less authoritarian? In addition, we hope to answer the following questions: How does authoritarianism change during military service? Does information about peers' authoritarian preference change individual beliefs and orientations?
External Link(s)

Registration Citation

Dahlum, Sirianne et al. 2022. "Peer effects on authoritarianism – Evidence from the Norwegian Armed Forces." AEA RCT Registry. November 17.
Experimental Details


We have two main interventions: We randomly assign recruits to rooms during bootcamp to test peer effects on authoritarian orientation. We further conduct an information experiment to test how information about the attitudes of other recruits' affect attitudes and beliefs.
Intervention Start Date
Intervention End Date

Primary Outcomes

Primary Outcomes (end points)
Our primary outcome is Authoritarian orientation, which we measure with the following survey question: "For each of the following statements below, please indicate how strongly you agree or disagree with each. Do you strongly agree (1), agree (2), neither agree or disagree (3) disagree (4), strongly disagree (5)?" “It is important to have a strong leader who gets things done, even if this sometimes means bypassing parliament and elections.” We reverse code the variable.
Primary Outcomes (explanation)

Secondary Outcomes

Secondary Outcomes (end points)
We measure beliefs and other attitudes that are linked to authoritarianism. See the plan for details.
Secondary Outcomes (explanation)

Experimental Design

Experimental Design
The peer effect intervention consists of us randomly asigning individuals to rooms where they will live for eight weeks with other recruits.

The information intervention consists of randomly providing information about the baseline attitudes.

See the plan for details.
Experimental Design Details
Randomization Method
Randomization is done in office by a computer.
Randomization Unit
Individual level randomization for the information experiment but for the peer effects the treatment is clustered at the room level.
Was the treatment clustered?

Experiment Characteristics

Sample size: planned number of clusters
80 rooms
Sample size: planned number of observations
600 individuals
Sample size (or number of clusters) by treatment arms
40 control rooms and 40 treatment rooms
Minimum detectable effect size for main outcomes (accounting for sample design and clustering)
Our minimum detectable effect for the information treatment with 80 percent power and a significance level of 5 percent, accounting for multiple hypothesis testing and covariate controls is 0.2 standard deviations of the main oucome. For the peer effect analysis, accounting for clustering, the minimum detectable effect is 0.25 standard deviations of the main outcome.

Institutional Review Boards (IRBs)

IRB Name
The Frisch Centre
IRB Approval Date
IRB Approval Number
Analysis Plan

Analysis Plan Documents

Pre-analysis plan for “Peer effects on authoritarianism – Evidence from the Norwegian Armed Forces”

MD5: 2882f6213820e13eb03216f18f93825d

SHA1: eacec0c69624fd7c01d5e98b05263db7c7f05b48

Uploaded At: November 11, 2022


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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