Is there a causal link between computer games and aggressive/violent behavior?

[nekoneko]

So, my professor made the second topic, and here it is.

Here are the questions:

Q1. Time to weigh in: Do you believe there is a link between computer gaming and aggressive/violent behavior? Defend your answer.

Q2. Is the influence of the game dependent of the nature of the violence indulged? For example, is there a difference in impact between 'shooting' people and battling alien creatures to the death?

Q3. Is the current game-rating system sufficient? If not, how would you change it?

Q4. Should stricter controls be in place limiting who has access to especially graphic or violent computer games? How could this be made effective for controlling on-line gaming?

I'd like to hear your thoughts again guys <3

Oh, on a side note, I got stuck on team pro, that there is a link; but I'd like to see both sides of the arguement from you guys if possible