Understanding Mechanisms of Health Behavior
- Conditions
- Fruit and Vegetable ConsumptionIncentive Interventions
- Interventions
- Behavioral: Monetary incentivesBehavioral: Self monitoring
- Registration Number
- NCT02594319
- Lead Sponsor
- University of Colorado, Boulder
- Brief Summary
This research seeks to examine psychological factors that may impact relationship between incentives and health behavior engagement, specifically fruit and vegetable consumption. Additionally, it will compare the impact of two different incentive schedules on behavior engagement, one providing immediate rewards (i.e. rewards received on a daily basis) and another providing delayed rewards (i.e. rewards received at the end of the study period), with a control condition in which no rewards are offered. Study participants will provide reports of their fruit and vegetable consumption each day for three weeks, and in the two incentive conditions, they will receive small monetary rewards for their fruit and vegetable consumption. Following the three week reporting and reward period, participants will complete two additional assessments, measuring psychological constructs and behavior engagement following the cessation of rewards.
- Detailed Description
Not available
Recruitment & Eligibility
- Status
- COMPLETED
- Sex
- All
- Target Recruitment
- 61
- Consume fewer than 5 servings/day of fruits and vegetables
- Daily access to internet for 3 weeks following baseline session
- Have or are willing to create an account on PayPal
Study & Design
- Study Type
- INTERVENTIONAL
- Study Design
- PARALLEL
- Arm && Interventions
Group Intervention Description Daily reward Monetary incentives Incentives for fruit and vegetable consumption delivered daily Delayed reward Monetary incentives Incentives for fruit and vegetable consumption delivered in a lump sum at the end of the intervention Control Self monitoring Daily reporting of fruit and vegetable consumption Delayed reward Self monitoring Incentives for fruit and vegetable consumption delivered in a lump sum at the end of the intervention Daily reward Self monitoring Incentives for fruit and vegetable consumption delivered daily
- Primary Outcome Measures
Name Time Method Fruit and Vegetable Consumption, servings per week 3 weeks Attitudes scale score 5 weeks Intrinsic Motivation scale score 5 weeks Fruit and vegetable consumption, servings per week 5 weeks Perceived Behavioral Control scale score 5 weeks
- Secondary Outcome Measures
Name Time Method Perceived Stress Scale score 5 weeks