I think it will be very difficult for you to find concrete evidence to back these statements up. I do not think that there are many polls taken about how far you would travel to visit your brother every other weekend.
I suppose there are lots of anecdotal bits of evidence for the first of these. For example, the assistant coach at Penn State U who didn't do more to pursue the case of sexual abuse could be seen in this light. You could say he failed to help the victim because he was afraid of making wabes and losing his job.