Carnagey and Anderson (2005) Had Participants Play a Car-Racing Video

Carnagey and Anderson (2005) had participants play a car-racing video game where players either lost points for violence, were rewarded for violence, or where violence did not impact a player's score. What did they find?

A) Rewarding violent behaviour decreased hostile emotions
B) Punishing violent behaviour increased hostile emotions
C) Rewarding violent behaviour decreased aggressive behaviour and thinking
D) Punishing violent behaviour decreased aggressive behaviour and thinking