- Poulin and Boivin (2002)
- Applied social learning analysis behaviour in boys aged 9 to 12
- Most aggressive boys formed relationships with other aggressive boys
- These friendships were lasting, stable and mutual reinforcing of aggressive behaviour
- The boys further used their alliances to gain resources through aggressive behaviour - successful
- They were therefore exposed frequently to models of aggression -each other - as well as the positive consequences of it
- Gained reinforcement from the rewarding approval from the rest of the gang
- This is precisely the type of conditions that SLT predicts with lead to aggressive behaviour