Guilt doesn't feel the same: why some people carry everything and others don't feel remorse
This feeling can help repair, learn from the mistake and strengthen bonds, but it also causes discomfort if it is understood that what is right has not been done or it does not appear at any time: “Its absence does not necessarily imply a lack of empathy or a personality disorder.”
We haven't written up this one. El Pais has the full story — the link below goes straight to it.