How to Monitor the Emotional Status of a Worker?

I think the idea of a healthy open source project would be longer term contributors, and many of them. So if i could detect drop out, maybe there's an intervention that could be taken to improve the community. And we find that people are using emoges not only to express their emotions, but they can also use imoges for different purposes. I feel like a lot of my emoges might reflect my feeling about the project, but not myself,. although i haven't done a careful analysis.