Social change, secularization, and the provision of social and human services

Last registered on April 06, 2026

Pre-Trial

Trial Information

General Information

Title
Social change, secularization, and the provision of social and human services
RCT ID
AEARCTR-0018202
Initial registration date
March 29, 2026

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
April 06, 2026, 7:49 AM EDT

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

Locations

Region

Primary Investigator

Affiliation
University of Vechta

Other Primary Investigator(s)

PI Affiliation
University of Vechta

Additional Trial Information

Status
In development
Start date
2026-04-01
End date
2026-07-31
Secondary IDs
Prior work
This trial does not extend or rely on any prior RCTs.
Abstract
We provide a survey-based experiment in which we ask participants about their religiosity, their attitudes towards the role of (organized) religion in society and the provision of human and social services by the Catholic Church. We recruit participants via the Lower Saxony Panel (www.niedersachsenpanel.de, representative sample) and conduct additional active recruitment among Roman Catholics in the Oldenburg region in Northwestern Germany. We expect significant differences between these sample regarding the interaction between church and society.
The survey includes a donation game and three vignette experiments on kindergarten choice and policy. In the donation game at the end of the study, participants can donate their participation fee to one of three main nongovernmental welfare associations in the Oldenburg region, the Caritas (Catholic), Diakonie (Lutheran) or the Red Cross (nonreligious).
External Link(s)

Registration Citation

Citation
Eisenkopf, Gerald and Alexia Hinnah. 2026. "Social change, secularization, and the provision of social and human services." AEA RCT Registry. April 06. https://doi.org/10.1257/rct.18202-1.0
Experimental Details

Interventions

Intervention(s)
Intervention (Hidden)
We conduct an online survey experiment in which we ask participants about their religiosity, their attitudes towards the role of (organized) religion in society and the provision of human and social services by the Catholic Church. We recruit participants from two different sources
• A representative sample via the Lower Saxony Panel (www.niedersachsenpanel.de) with a focus on the Oldenburg region in western Lower Saxony (Northwest Germany)
• A Catholic sample: With support of the local diocese in the Oldenburg region, we also recruit actively among Roman Catholics.
Beside socio-demographic information, the survey includes several established and modified scales on religious commitment, trust in the church at the local and the global level, frequency of interaction with the catholic church, the role of (organized) religion in society and on which activities the catholic church should focus on. More specifically, we include (modified) scales from the German Socio-Economic Panel
- A self generated measure on how much contact the participants have with the catholic church (in private, on the job, via (social) media)
- Generalized trust and relative trust in the Catholic Church. We differentiate this trust measure between general and local institutions
- A German version of the Religious Commitment Scale (Klumparendt & Drenckhan, 2012).
- An augmented scale regarding the use of spare time (Question 10 of the SOEP-Core– 2021: Personenfragebogen , see Infas (2023)). We added praying and attendance of religious ceremonies as additional elements)
- Scales on social justice (Liebig et al. 2016, infas, 2022) and the role of religion in society (Bengtson et al. (2015), )
We have two sets of questions in which we ask participants to rank responses: In the first we ask participants about their preferred provider for specific social and human services (hospitals, schools, old-age homes, kindergarten. educational, marriage and family counseling, pre-abortion counseling). They can choose between a public, a catholic, a nonprofit and a commercial supplier. In the second set, we ask participants which of a selection of its current activities the catholic church should prioritize, and in which order.
We expect significant differences between the two aforementioned samples regarding the role of the church in society and on which activities the church should focus on.

The survey also includes four experimental elements, a donation game and three vignette experiments. The vignette experiments provide variations in hypothetical scenarios in which participants decide
1. As a parent about enrolling their child in a Catholic or a secular nonprofit kindergarten.
2. As a manager of a Catholic kindergarten about accepting a Catholic or non-Catholic (atheist or Lutheran) child for a vacant spot.
3. As a citizen about whether a Catholic or non-religious NGO should run a local taxpayer supported kindergarten.
We hypothesize that Catholic participants, especially those recruited actively via the Catholic Church, have a stronger preference for the Catholic kindergarten, the Catholic child care applicants and kindergartens, even if the alternative choice implies an additional social benefit.

In the donation game at the end of the study, participants can donate their participation fee to one of three main nongovernmental welfare associations in the Oldenburg region, the Caritas (Catholic), Diakonie (Lutheran) or the Red Cross (secular). We expect more frequent and larger donations to the Caritas from the Catholic samle.

Overall, the project provides insights into different perspectives on the trade-offs in religious entities and NGOs that receive public financial support to provide social and human services to their own members and other citizens.
Intervention Start Date
2026-04-01
Intervention End Date
2026-07-31

Primary Outcomes

Primary Outcomes (end points)
Frequency, amount and allocation of donations
Choices in the vignette studies
Primary Outcomes (explanation)
We obtain these measures directly from the survey. One focus will be on the differences between the two samples.

Secondary Outcomes

Secondary Outcomes (end points)
Responses to the survey questions
Rankings regarding church policy
Choices of preferred provider oif social and human services
Secondary Outcomes (explanation)
We obtain these measures directly from the survey. One focus will be on the differences between the two samples.

Experimental Design

Experimental Design
The study contains a survey, three vignette experiments and a donation game. The vignettes focus on kindergarten choice as a parent, selection of a child into a kindergarten as kindergarten manager and the coice of a kindergarten provider as a citizen.

Experimental Design Details
The survey also includes four experimental elements, a donation game and three vignette experiments. The vignette experiments provide variations in hypothetical scenarios in which participants decide
1. As a parent about enrolling their child in a Catholic or a secular nonprofit kindergarten.
2. As a manager of a Catholic kindergarten about accepting a Catholic or non-Catholic (atheist or Lutheran) child for a vacant spot.
3. As a citizen about whether a Catholic or non-religious NGO should run a local taxpayer supported kindergarten.
We hypothesize that Catholic participants, especially those recruited actively via the Catholic Church, have a stronger preference for the Catholic kindergarten, the Catholic child care applicants and kindergartens, even if the alternative choice implies an additional social benefit.

In the donation game at the end of the study, participants can donate their participation fee to one of three main nongovernmental welfare associations in the Oldenburg region, the Caritas (Catholic), Diakonie (Lutheran) or the Red Cross (secular). We expect more frequent and larger donations to the Caritas from the Catholic samle.
Randomization Method
We use soscisurvey.de to conduct the survey and randomly assign participants into the different treatments of the various vignette studies. We thus have between 16 and 32 treatments per vignette. The treatments vary the information content. The random processes of the three vignettes are uncorrelated, thus treatment assignment in one vignette does not predict assignment in another one.
Randomization Unit
individual
Was the treatment clustered?
No

Experiment Characteristics

Sample size: planned number of clusters
1000 individuals, 700 from the Lower Saxony Panel, 300 via active recruitment among catholics.
Sample size: planned number of observations
1000 individuals, 700 from the Lower Saxony Panel, 300 via active recruitment among catholics.
Sample size (or number of clusters) by treatment arms
about 60 per treatment arm per vignette study
Minimum detectable effect size for main outcomes (accounting for sample design and clustering)
IRB

Institutional Review Boards (IRBs)

IRB Name
Gesellschaft für experimentelle Wirtschaftsforschung e.V.
IRB Approval Date
2026-03-09
IRB Approval Number
No. a2bIRe3Z

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