What were the children matched on
Gender and prior aggression levels
How were children measured for aggression
Nursery teacher rated them on a 5 point scale
Physical aggression, verbal aggression, aggression towards inanimate objects, aggression inhibition
Inter rater reliability
A second researcher also rated the children on aggression
How were children grouped
Each child was grouped with 2 other children who showed similar aggression
Randomly assigned to either aggressive, non aggressive or model conditions
Advantage and disadvantage of matched participants
Adv- any differences in aggression will be due to model and not child’s behaviour
Dis- time consuming and difficult