Understanding Mechanisms of Health Behavior

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

61 participants

Study Classification

INTERVENTIONAL

Study Start Date

2015-02-28

Study Completion Date

2015-06-30

Brief Summary

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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.

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Detailed Description

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Conditions

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Fruit and Vegetable Consumption Incentive Interventions

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

BASIC_SCIENCE

Blinding Strategy

NONE

Study Groups

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Control

Daily reporting of fruit and vegetable consumption

Group Type ACTIVE_COMPARATOR

Self monitoring

Intervention Type BEHAVIORAL

Daily reward

Incentives for fruit and vegetable consumption delivered daily

Group Type EXPERIMENTAL

Monetary incentives

Intervention Type BEHAVIORAL

Self monitoring

Intervention Type BEHAVIORAL

Delayed reward

Incentives for fruit and vegetable consumption delivered in a lump sum at the end of the intervention

Group Type EXPERIMENTAL

Monetary incentives

Intervention Type BEHAVIORAL

Self monitoring

Intervention Type BEHAVIORAL

Interventions

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Monetary incentives

Intervention Type BEHAVIORAL

Self monitoring

Intervention Type BEHAVIORAL

Eligibility Criteria

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Inclusion Criteria

* 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