The Bobo doll study - Albert Bandura
Tested 36 boys and 36 girls aged 3-6
Pre-tested children by observing the children in the nursery and judging their aggressive behaviour so they could be matched across groups (Inter-Rater reliability r=0.89)
Lab experiment with matched pairs design
Aggressive model shown to 24 children
Non-aggressive model shown to 24 children
No model shown to 24 children
The children were put in a room for 20 minutes and their behaviour was observed