Structuring Financial Incentives to Increase Physical Activity
The purpose of this study is to evaluate the effectiveness of different structures of long term financial incentives on increasing physical activity performed by subjects, as measured by the number of steps walked per day.
Investigators are interested in studying whether physical activity increases during an intervention period (with incentives) and a post-intervention period (with no incentives).
研究概览
详细说明
The proposed study is a field experiment. Adults within the ages of 25 and 60 years of age, and with a body mass index of 22 or higher will be eligible to participate.
The study will consist of (1) a two-week baseline period, (2) a 36-week intervention period, and (3) a 12-week follow-up period.
At the beginning of the study, subjects will be given a wearable fitness device and their daily step count will be monitored for two weeks; this is the baseline period. After the two-week baseline period, the subjects will be randomly assigned to one of the five different conditions (Control, Gain, Loss, Gain Streak, or Loss Streak) and will be given the goal to increase their baseline step counts by 2,500 steps.
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HYPOTHESES -- Investigators expect the following:
- Loss Aversion: Subjects in the Loss treatment will achieve the goal on a greater number of days than subjects in the Gain treatment.
- Streak: Subjects in the Gain treatment will achieve the goal on a greater number of days than subjects in the Gain Streak treatment.
- Loss Streak: Subjects in the Loss treatment will achieve the goal on a greater number of days than subjects in the Loss Streak treatment. Whether subjects in the Loss Streak treatment will perform better or worse than subjects in the other two treatments will be investigated.
CONTRIBUTION -- Prior research has not examined the effect of a long term financial incentive (36 weeks) on individual behavior in achieving a goal. In this study, the investigators also examine two additional financial incentive structures: Gain Streak and Loss Streak. If the hypotheses are correct, the results have important implications for designing financial incentives to encourage good behavior and to encourage good habit formation across domains.
研究类型
注册 (实际的)
阶段
- 不适用
联系人和位置
学习地点
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Singapore、新加坡、119077
- National University of Singapore
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参与标准
资格标准
适合学习的年龄
接受健康志愿者
有资格学习的性别
描述
Inclusion Criteria:
- Singapore citizens and permanent residents
- Adults with BMI greater than 22
- Ownership of a smartphone or tablet
- Only one member per household can participate in the study
Exclusion Criteria:
- Women who are pregnant or breast feeding, or who intend to become pregnant over next year
- Subjects who are already participating in another physical activity program or study
- Subjects who are unable to participate for a total of 1 year
- Subjects who are unwilling to wear the fitness device
- Subjects who already walk more than 10,000 steps a day (self-reported per-day-average over seven days)
Subjects who have any of the following health conditions:
- high blood pressure
- high cholesterol
- heart attack
- heart failure
- stroke
- chronic obstructive pulmonary disease
- kidney disease
- diabetes (type 2)
学习计划
研究是如何设计的？
设计细节
- 主要用途：其他
- 分配：随机化
- 介入模型：并行分配
- 屏蔽：双倍的
武器和干预
参与者组/臂 |
干预/治疗 |
|---|---|
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无干预：Control
Subjects in the Control treatment are not given any financial incentive to achieve the goal.
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实验性的：Gain Treatment
Financial Incentive: Each subject in the Gain treatment will earn a certain amount of money for each day the goal is achieved.
The money earned will be added to a virtual account that the subject has, and will be paid to the subject at the end of the intervention period.
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Giving different structures of long term (36 weeks) financial incentives to increase physical activity
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实验性的：Loss Treatment
Financial Incentive: Each subject in the Loss treatment will be given a certain amount of money in his/her virtual account at the beginning of every week.
For each day that the subject does not achieve the goal, a small portion of that money will be deducted from the virtual account.
The balance that is left in the virtual account will be paid to the subject at the end of the intervention period.
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Giving different structures of long term (36 weeks) financial incentives to increase physical activity
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实验性的：Gain Streak Treatment
Financial Incentive: Each subject in the Gain Streak treatment get an increasing amount of money added to his/her virtual account for every continuous day that they achieve the goal.
The maximum cumulative amount per week is same as in the other treatment conditions.
The payment is reset at the beginning of each week, or if the subject misses the goal on any day.
The money in the virtual account will be paid to the subject at the end of the intervention period.
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Giving different structures of long term (36 weeks) financial incentives to increase physical activity
|
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实验性的：Loss Streak Treatment
Financial Incentive: Each subject in the Loss Streak treatment will be given a certain amount of money in his/her virtual account at the beginning of every week.
An increasing amount of money will be deducted for each consecutive day the subject does not achieve the goal.
The payment is reset at the beginning of each week, or when the subject achieves the goal (i.e., deductions are reset when the streak is broken).
The balance that is left in the virtual account will be paid to the subject at the end of the intervention period.
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Giving different structures of long term (36 weeks) financial incentives to increase physical activity
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研究衡量的是什么？
主要结果指标
结果测量 |
措施说明 |
大体时间 |
|---|---|---|
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Step count goal -- Intervention
大体时间：36-week intervention period following the baseline period.
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Proportion of participant-days on which the goal (baseline +2,500 steps) was achieved during the intervention period.
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36-week intervention period following the baseline period.
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Change in mean daily steps -- Intervention
大体时间：36-week intervention period following the baseline period.
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Change in mean daily steps during the intervention period.
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36-week intervention period following the baseline period.
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次要结果测量
结果测量 |
措施说明 |
大体时间 |
|---|---|---|
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Step count goal -- Post-intervention
大体时间：12-week post-intervention period.
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Proportion of participant-days on which the goal (baseline +2,500 steps) was achieved during the post-intervention period.
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12-week post-intervention period.
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Change in mean daily steps -- Post-intervention
大体时间：12-week post-intervention period.
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Change in mean daily steps during the post-intervention period.
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12-week post-intervention period.
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Sleep Pattern -- Intervention
大体时间：36-week intervention period following the baseline period.
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Changes in sleep pattern (deep sleep, hours of continuous sleep) during the intervention period.
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36-week intervention period following the baseline period.
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Sleep Pattern -- Post-intervention
大体时间：12-week post-intervention period.
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Changes in sleep pattern (deep sleep, hours of continuous sleep) during the post-intervention period.
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12-week post-intervention period.
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Weight (in kilograms) Loss -- Intervention
大体时间：36-week intervention period following the baseline period.
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Drop in weight from baseline to the end of the intervention period.
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36-week intervention period following the baseline period.
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Weight (in kilograms) Loss -- Post-intervention
大体时间：48-week period following the baseline period.
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Drop in weight from baseline to the end of the post-intervention period.
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48-week period following the baseline period.
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Change in Waist Measurement (in inches) -- Intervention
大体时间：36-week intervention period following the baseline period
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Change in waist measurements from baseline to the end of the intervention period.
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36-week intervention period following the baseline period
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Change in Waist Measurement (in inches) -- Post-intervention
大体时间：48-week period following the baseline period.
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Change in waist measurements from baseline to the end of the post-intervention period.
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48-week period following the baseline period.
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合作者和调查者
调查人员
- 首席研究员：Teck H Ho, PhD、National University of Singapore
研究记录日期
研究主要日期
学习开始 (实际的)
初级完成 (实际的)
研究完成 (实际的)
研究注册日期
首次提交
首先提交符合 QC 标准的
首次发布 (实际的)
研究记录更新
最后更新发布 (实际的)
上次提交的符合 QC 标准的更新
最后验证
更多信息
与本研究相关的术语
计划个人参与者数据 (IPD)
计划共享个人参与者数据 (IPD)？
IPD 计划说明
IPD 共享时间框架
IPD 共享访问标准
IPD 共享支持信息类型
- 研究方案
- 国际碳纤维联合会
- 分析代码
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