Bandura, Ross and Ross 1961- Imitation of Agressive Models

Aims, Procedure, Results, Conclusion, Evaluation

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Transmission of Aggression through Imitation of Aggressive Models
Bandura, Ross and Ross- 1961
To investigate whether participants exposed to aggressive models would reproduce
aggressive acts resembling those of their models.
To see if boys would be more predisposed than girls to imitate aggressive behaviour.
72 participants (36 males 36 females) all aged between 3 and 6. They were all enrolled at
Stanford University Nursery School. Participants in experimental and control conditions
were matched individually on their ratings of their aggressive behaviour in social
interactions (rated by their teacher and experimenter who knew the children well).
The confederates used were 2 adult models (one male, one female). An experimenter also
conducted the study for all 72 children. The method was a controlled observation in lab
Participants were taken into a room individually by the experimenter and were sat at a table
where they could do potato prints. The model was outside, and was asked to join in the
game. The experimenter took the model to the other side of the room which had a table, a
chair, some tinker toys and a bobo doll.
Non Aggressive Condition The model assembled the tinker toys for the full ten minutes,
ignoring the bobo doll. Aggressive Condition The model started to assemble the tinker toys
for one minute but for the rest of the time played with bobo aggressively. They physically
abused bobo by laying on him, punching him in the nose, kicking him, throwing him in the
air and hitting bobo with a mallet. The verbally abused bobo by saying, sock him in the
nose, hit him down, POW and kick him.
After ten minutes participants were taken into another room. Aggression Arousal they were
taken into a room with attractive toys with a fire engine and were told that these toys
weren't fro them and were for the other children.
They were then taken into another room which had aggressive toys (bobo, mallet, guns,
and ball hanging from the ceiling) and non aggressive toys (dolls, crayons, tea set, cars).
Toys were in a set order for each participant as a control. Participants spent 20 minutes in
the experimental room, and their behaviour was rater using predetermined response
categories. This was judged through a one way mirror.
Behaviour was rated using time sampling, and participants were rated every 5 seconds
during the 20 minute period. For each participant there were 240 recorded behaviours. The
male model observed (scored) all 72 of the participants, and half were also scored by
another observer. There was high inter rater reliability of 0.09.
These are all the conditions that occurred:
Group Num of Ppts Sex of Ppts Aggressive/Non- Aggressive Sex of Model
1 6 M Aggressive M
2 6 M Non Aggressive F
3 6 M Non Aggressive M
4 6 M Aggressive F
5 6 F Aggressive M
6 6 F Non Aggressive F
7 6 F Non Aggressive M
8 6 F Aggressive F

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Contro ? ? ? ?
Response Measure obtained were; imitation of physical aggression, imitation of verbal
aggression, non-imitave aggressive responses.
Physical Female Male Model Female Model Male Model Control
Aggression Model
Aggressive Aggressive Non Aggressive Non Aggressive
Female Ppts 5.5 7.2 2.5 0 1.2
Male Ppts 12.4 25.8 0.2 1.5 2.0
Verbal Female Male Model Female Model Male Model Control
Aggression Model
Aggressive Aggressive Non Aggressive Non Aggressive
Female Ppts 13.7 2.0 0.3 0 0.7
Male Ppts 4.3 12.7 1.1 0 1.…read more


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