Yes, I have observed this sort of concept in my son, myself, and even my dad. I always thought of it as sort of being open to suggestion or 'gullible' though those are not quite right - not that I would do something because someone tricked me.
I have actually found that as I get older and learn more I have detached myself somewhat - at least in certain situations - so that this happens less. The negative of course is I do not make as many connections with people, BUT I have found I am emotionally more stable over the long term. It is a battle.
My son gets in trouble at school, I believe for the same reason - when I talk to him about it, it seems to be that those behaviors are driven off the other kids at school - the things they say or do.
Then my dad, he would never admit anything, but it appears that he does the same - if he talks with someone that he respects or is important to him, and that person has serious negative words to say, it stays with him. He will mention it several times later, and his mood/attitude change. In contrast, I have learned to control this better - I still have the tendency, but most of the time now I can avoid this change in mood based on other people.