Information, motivated memory and goal setting in health habit formation

Last registered on December 14, 2020

Pre-Trial

Trial Information

General Information

Title
Information, motivated memory and goal setting in health habit formation
RCT ID
AEARCTR-0006892
Initial registration date
December 13, 2020

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
December 14, 2020, 10:28 AM EST

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

Locations

Region

Primary Investigator

Affiliation
Nankai University, Tianjin, China

Other Primary Investigator(s)

PI Affiliation
Nankai University

Additional Trial Information

Status
In development
Start date
2020-06-15
End date
2021-06-30
Secondary IDs
Abstract
In this study, we examine whether providing information about past behavior influences how people set and implement goals in a walking-for-health project.
External Link(s)

Registration Citation

Citation
Meng, Jingyi and Wenbo Zou. 2020. "Information, motivated memory and goal setting in health habit formation ." AEA RCT Registry. December 14. https://doi.org/10.1257/rct.6892
Sponsors & Partners

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Experimental Details

Interventions

Intervention(s)
We provide participants of a walking-for-health project summary information about their past behavior in Phase I of the project.
Intervention Start Date
2020-12-14
Intervention End Date
2020-12-31

Primary Outcomes

Primary Outcomes (end points)
-The goal in terms of the number of days to walk more than 8000 steps for a month.
-The number of days to walk more than 8000 days for a month in each of the six months, as well as the average number of days for a month.
-The reported average number of days that they walk more than 8000 steps in a month for the past five months.
-The reported number of months meeting the goal in the past five months.
-The reported number of days short or long of the goal in each month in the past five months (for those in the Original-Goal and Reduced-Goal groups, and those with a self-set goal in the control group and among the non-participants of Phase I); the reported number of days walking more than 8000 steps in each month (for those without a self-set goal in the control group and among the non-participants of Phase I).
Primary Outcomes (explanation)

Secondary Outcomes

Secondary Outcomes (end points)
Secondary Outcomes (explanation)

Experimental Design

Experimental Design
In the experiment, we randomly divide participants into two treatments, one receiving the information while the other not. Then participants set a goal for Phase II of the project. They also receive a monthly certificate for each month indicating whether their goal is met.
Experimental Design Details
Randomization Method
Randomization done in office by assigning alternating numbers of 1 and 2 to participants sorted by their groups and then enrollment order.
Randomization Unit
Individual.
Was the treatment clustered?
No

Experiment Characteristics

Sample size: planned number of clusters
230 individuals.
Sample size: planned number of observations
230 individuals.
Sample size (or number of clusters) by treatment arms
115 individuals per treatment.
Minimum detectable effect size for main outcomes (accounting for sample design and clustering)
2.2 days in the self-set goal regarding the number of days walking more than 8000 steps in a month.
Supporting Documents and Materials

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IRB

Institutional Review Boards (IRBs)

IRB Name
IRB Approval Date
IRB Approval Number
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