- For example, a case where you want to promote fitness
- Reward for exercise” is the pattern on the left (market-type incentive for individuals)
- Social Network Incentive: “Encourage others to exercise and reward those who do” is a social network incentive.
- experiment
- market-based incentive
- Reward the individual for increased physical activity
- Social Network Incentives
- Assign 2 “buddies” to each person x
- x’s buddy receives cash for each increase in x’s momentum
- result
- Social network incentives were four times more effective than market-based incentives for individuals
- Four times the amount of behavior change per dollar.
- market-based incentive
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- Aharony, N., Pan, W., Ip, C., Khayal, I. and Pentland, A., 2011. Social fMRI: Investigating and shaping social mechanisms in the real world. Pervasive and Mobile Computing, 7(6), pp.643-659.
- Adjodah, D.D., 2013. Understanding social influence using network analysis and machine learning (Doctoral dissertation, Massachusetts Institute of Technology).
- Friends and Family Study
- FunFit
- Part of a study conducted by the MIT Media Lab in 2010
- GPS, accelerometers, and Facebook feeds were collected from 130 subjects for over a year.
- During two months of that period, there was an intervention on physical activity
- Measuring the amount of motion with an accelerometer see Adjodah 2.3 Measuring behavior change
- Cost per unit of momentum improvement / Average improvement rate
- control When paying compensation to individuals $83 / 3.2
- If checked by peer-see buddy $39.5 / 5.5
- Peer-reward If rewarded for a buddy $12 / 10.4
- Peer-see is a condition that rewards the individual as well as control, and also allows two buddies to see the amount of exercise.
- consideration
- Buddies become a team with the common goal of “increasing x momentum”.
- Engagement (collaborative behavior) on how to increase x momentum is encouraged.
- Momentum was maintained after incentives were removed.
- Coefficient of determination of correlation between behavior change and number of calls is 0.8, 0.9 for all communication channels
- In other words, rewarding buddies promotes communication.
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