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Question Order Bias in a Survey on User Satisfaction with Public Services

Last registered on September 21, 2018

Pre-Trial

Trial Information

General Information

Title
Question Order Bias in a Survey on User Satisfaction with Public Services
RCT ID
AEARCTR-0003326
Initial registration date
September 17, 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 21, 2018, 12:11 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 Copenhagen

Other Primary Investigator(s)

PI Affiliation
Aarhus University
PI Affiliation
VIVE – The Danish Center for Social Science Research
PI Affiliation
VIVE – The Danish Center for Social Science Research

Additional Trial Information

Status
In development
Start date
2018-10-01
End date
2018-10-22
Secondary IDs
Abstract
Public service organizations often evaluate their performance using surveys of user satisfaction with the offered services. The proposed study examines how the order of questions in a user satisfaction survey affects reported satisfaction with specific aspects of service as well as overall satisfaction. Research reveals mixed findings on the effects of presenting questions about satisfaction with specific aspects of government performance before or after questions about overall satisfaction. Using a split-ballot survey experiment, we aim to provide new evidence that may help resolve the issue. We embed the experiment in a national survey by a government agency. The agency is responsible for managing and granting government funding for social welfare projects. Private and public organizations of all kinds and type may (and do) apply. The survey captures grant recipients’ satisfaction with the agency services relating to the processes of applying for, receiving, and administering the grant. We test the effects of two treatments on the survey respondents’ reported service satisfaction: (1) survey question on overall satisfaction presented before questions on satisfaction with specific aspects of service and (2) question on overall satisfaction presented after questions on satisfaction with specific aspects of service.
External Link(s)

Registration Citation

Citation
Larsen, Morten et al. 2018. "Question Order Bias in a Survey on User Satisfaction with Public Services." AEA RCT Registry. September 21. https://doi.org/10.1257/rct.3326-2.0
Former Citation
Larsen, Morten et al. 2018. "Question Order Bias in a Survey on User Satisfaction with Public Services." AEA RCT Registry. September 21. https://www.socialscienceregistry.org/trials/3326/history/195471
Experimental Details

Interventions

Intervention(s)
The intervention consists of variation in the order of questions in a user satisfaction survey.
Intervention Start Date
2018-10-01
Intervention End Date
2018-10-22

Primary Outcomes

Primary Outcomes (end points)
Reported service satisfaction, overall
Reported service satisfaction, specific aspects of service
Primary Outcomes (explanation)

Secondary Outcomes

Secondary Outcomes (end points)
Survey completion time
Secondary Outcomes (explanation)

Experimental Design

Experimental Design
The study involves a two-armed, parallel-design, individually randomized trial (in the form of a split-ballot survey experiment) carried out among a sample of organizations having successfully applied for government grant funding in 2017 and 2018 (first half year) for starting a new social welfare project.

On behalf of a government agency responsible for managing and awarding government grant funding for new social welfare projects, we will send out a survey request to all organizations having successfully applied for grant funding in 2017 and 2018 (first half year). For each organization, the survey request will be send to a single employee (i.e., the person listed as contact person in the government agency’s records).

We will manipulate the order of the questions in the survey. By random assignment, survey respondents will receive one of two versions of a user satisfaction survey. The two versions will differ with respect to the order of the survey questions (but are otherwise identical):

Version 1: Survey question on overall satisfaction presented before questions on satisfaction with specific aspects of service.

Version 2: Survey question on overall satisfaction presented after questions on satisfaction with specific aspects of service.
Experimental Design Details
Randomization Method
Randomization is carried out by simple randomization by computer.
Randomization Unit
The individual survey respondent.
Was the treatment clustered?
No

Experiment Characteristics

Sample size: planned number of clusters
500 respondents
Sample size: planned number of observations
500 respondents
Sample size (or number of clusters) by treatment arms
500 respondents (250 in each treatment arm)
Minimum detectable effect size for main outcomes (accounting for sample design and clustering)
Under the assumption of 500 valid survey responses, balanced groups, a two-sided alpha level of .05 and 80% power: Power analysis suggests that we should be able to detect an effect size of .25 or larger (Cohen’s D).
IRB

Institutional Review Boards (IRBs)

IRB Name
IRB Approval Date
IRB Approval Number
Analysis Plan

Analysis Plan Documents

Analysis Plan

MD5: 3998d1b21bf010ae02d949f9e5ee50a7

SHA1: 99fd647fb821435eac947d2d6be4350e32eaed1f

Uploaded At: September 17, 2018

Post-Trial

Post Trial Information

Study Withdrawal

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Intervention

Is the intervention completed?
Yes
Intervention Completion Date
October 21, 2018, 12:00 +00:00
Data Collection Complete
Yes
Data Collection Completion Date
October 21, 2018, 12:00 +00:00
Final Sample Size: Number of Clusters (Unit of Randomization)
458 individuals
Was attrition correlated with treatment status?
No
Final Sample Size: Total Number of Observations
458 individuals
Final Sample Size (or Number of Clusters) by Treatment Arms
229 "general first" condition, 229 "specific first" condition
Data Publication

Data Publication

Is public data available?
No

Program Files

Program Files
Reports, Papers & Other Materials

Relevant Paper(s)

Reports & Other Materials

Description
Article published
Citation
Thau, M, Mikkelsen, MF, Hjortskov, M, Pedersen, MJ. Question order bias revisited: A split-ballot experiment on satisfaction with public services among experienced and professional users. Public Admin. 2021; 99: 189–204. https://doi.org/10.1111/padm.12688