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NEW UPDATE: Completed trials may now upload and register supplementary documents (e.g. null results reports, populated pre-analysis plans, or post-trial results reports) in the Post Trial section under Reports, Papers, & Other Materials.
Positive Psychology Interventions: A Food Pantry Field Study
Last registered on March 09, 2016

Pre-Trial

Trial Information
General Information
Title
Positive Psychology Interventions: A Food Pantry Field Study
RCT ID
AEARCTR-0001114
Initial registration date
March 09, 2016
Last updated
March 09, 2016 3:10 PM EST
Location(s)
Primary Investigator
Affiliation
Other Primary Investigator(s)
Additional Trial Information
Status
Completed
Start date
2015-07-09
End date
2015-07-30
Secondary IDs
Abstract
Various positive psychological interventions have been investigated in different contexts to increase subjective well-being. The Crisis Ministry of Mercer County in Trenton, New Jersey provided a unique opportunity to study this form of intervention in a real world setting. In this paper, we outline a pre-analysis plan for a study at the Crisis Ministry’s food pantry to examine the effect of such an intervention on the participants. Participants in the treatment condition were asked to perform a task directly benefitting the Crisis Ministry that involved shopping for other clients who could not come to the Crisis Ministry. Participants in the control condition proceeded through the food pantry as usual. After shopping for food, a survey was administered to assess subjective well-being and information about the participant’s relationship with the Crisis Ministry. Here we outline the analysis of the effect of asking people to do a small favor on subjective well-being and the relationship between them and the requester.
External Link(s)
Registration Citation
Citation
Harwood, Christopher. 2016. "Positive Psychology Interventions: A Food Pantry Field Study." AEA RCT Registry. March 09. https://doi.org/10.1257/rct.1114-1.0.
Former Citation
Harwood, Christopher. 2016. "Positive Psychology Interventions: A Food Pantry Field Study." AEA RCT Registry. March 09. http://www.socialscienceregistry.org/trials/1114/history/7200.
Experimental Details
Interventions
Intervention(s)
Intervention Start Date
2015-07-09
Intervention End Date
2015-07-30
Primary Outcomes
Primary Outcomes (end points)
Subjective well-being
Primary Outcomes (explanation)
Secondary Outcomes
Secondary Outcomes (end points)
Secondary Outcomes (explanation)
Experimental Design
Experimental Design
Randomized lab-in-the-field experiment
Experimental Design Details
Randomization Method
prepopulated notecards
Randomization Unit
individual
Was the treatment clustered?
No
Experiment Characteristics
Sample size: planned number of clusters
561 individuals
Sample size: planned number of observations
561 individuals
Sample size (or number of clusters) by treatment arms
approximately 280 treatment, 281 contol
Minimum detectable effect size for main outcomes (accounting for sample design and clustering)
IRB
INSTITUTIONAL REVIEW BOARDS (IRBs)
IRB Name
IRB Approval Date
IRB Approval Number
Analysis Plan
Analysis Plan Documents
Positive Psychological Interventions: A Food Pantry Field Study Pre-Analysis Plan

MD5: 82ce38c07307c065843ddbf8bb19267a

SHA1: 5b33df68ad5508747455b79e038412da1fde149a

Uploaded At: March 09, 2016

Post-Trial
Post Trial Information
Study Withdrawal
Intervention
Is the intervention completed?
No
Is 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