The greeks considered the regions to be the seat of melancholy (sad feelings) because they contained the liver and spleen, which they thought released humors that caused different moods.

Afew buddies come over to your house to hang out. they notice you're struggling in school, perhaps you have to rely on to pass your class, but you can't absorb the knowledge. they could positively reinforce getting a tutor and working with you, dedicating more time to the areas of struggle and less on hanging out to better yourself.secondly, say you're the victim of bullying. you're afraid to tell an adult because of possible repercussions from the bully himself. your friends encouraging you and pushing you towards telling an adult for your safety is another example. 

Yes, this is very true. specifically causing damage in the  dentrite. 

Providing a forum to gossip about othersa

Increase the premiums on an individual basis