Well there are theories humans on Earth are selectively bred too.

The selective breeding that led to the dogs being more subservient also affected humans. As human populations who worked with dogs had advantages over the ones who didn’t. That’s a theory at least.

There are also theories that humans domesticated ourselves. That civilization promotes certain traits over others. Just like when we domesticated other species we chose to promote some traits over others.

Jails could be an example of this process. Violent fools getting removed from society. The genes that led to that stuff being removed. Meanwhile the humans with traits more compatible with society get successful and have kids and so pass on those traits.

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