Do Relationship Quality Influence the Results of a Dyadic Study?

I understand that the animals you work with are treated humanely and that they're not forced to do anything. Is that correct? Yeah, our monkeys only participate voluntarily. So they live in a social group and they are never deprived of anything to encourage them to participate. And I think that's really important. It's important ethically, but it's also important for my research. I study social behavior. I want to know what they do naturally.