Badura study

Bandura et al. (1961) - Transmission of Aggression Through Imitation of Aggressive Models

  • Reference: Bandura, A., Ross, D., & Ross, S. A. (1961). Transmission of aggression through imitation of aggressive models. Journal of Abnormal and Social Psychology, 63(3), 575–582.

Core Psychology Being Investigated

  • Children Copying Adults:

    • Children tend to imitate adult behaviors due to their immediate social environments. This creates a propensity for children to adopt behaviors observed in adults or peers.

    • Behavior Generalization: If children acquire new responses, these behaviors can be exhibited in new settings without the presence of the adult model.

  • Social Learning Theory: Bandura's prior research examined how social learning can lead to both aggressive and non-aggressive behaviors.

    • Key Mechanisms Involved in Learning:

    • Attention: The observer must pay attention to the behavior of the model to learn.

    • Retention: The behavior observed must be remembered for reproduction later.

    • Reproduction: The child must have the ability to reproduce the observed behavior.

    • Hypothesis by Bandura: Observing aggressive models should lead to increases in aggressive behavior, whereas observing non-aggressive models should lead to less aggressive behavior, ideally decreasing aggression levels.

Key Terminology

  • Model: A person who inspires or encourages others to imitate positive or negative behaviors.

  • Social Learning: The learning of a new behavior that is observed in a role model and imitated later in the absence of that model.

  • Aggression: Behavior aimed at harming others either physically or psychologically.

Background of the Study

  • Previous studies indicated that children typically imitate the behavior of a model present at the time.

  • Bandura et al. aimed to see if social learning theory could explain aggression in children in the absence of aggressive models.

  • Gender Differences in Imitation: In 1960s USA, boys were often rewarded for behaviors deemed appropriate for their gender, while girls faced similar judgments.

    • Resulted in two major implications:

    1. Children are more likely to imitate same-sex models.

    2. Boys might imitate aggressive behaviors more readily than girls because aggression is traditionally considered masculine.

Aim of the Study

  • To investigate:

    • Whether a child learns aggression through observation of a model and can reproduce that behavior without the model present.

    • The significance of the model's sex:

    1. Observed aggressive behaviors will be imitated; children exposed to aggressive models will display more aggression than those exposed to non-aggressive models or none.

    2. Observed non-aggressive behaviors will also be imitated; children seeing non-aggressive models will be less aggressive than those who see no model.

    3. Children are more likely to imitate same-sex models.

    4. Boys are more likely to imitate aggression than girls.

Methodology

Research Method and Design

  • Conducted as a Laboratory Experiment:

    • Controlled environment, ensuring the child's natural behavior could be observed without typical play pressures.

    • Independent Measures Design: Different children participated in the different conditions of the independent variables (IVs), but they were matched based on aggression levels.

    • Independent Variables (IVs):

    1. Model Type: Aggressive model, non-aggressive model, or no model.

    2. Model Sex: Same sex as the child or opposite sex.

    3. Learner Sex: Boy or girl.

    • Dependent Variable (DV):

    • Child's display of aggressive behavior, measured through controlled observation and specific aggression categories.

Sample

  • Total participants: 72 children aged 3-6 years (36 boys and 36 girls), from Stanford University nursery school.

Procedure

  • Children were pre-rated on aggression by an experimenter and teacher. They were assessed on four measures:

    • Physical aggression

    • Verbal aggression

    • Aggression towards inanimate objects

    • Aggression inhibition (anxiety)

  • Ratings used a five-point scale and were validated for inter-rater reliability (r = 0.89) across 51 of the 72 children.

  • Group Allocation

    • Twelve boys and twelve girls received no model.

    • Remaining children were evenly divided between aggressive and non-aggressive models, controlling for sex.

  • Experiment Process:

    • Entered an observation room where children were shown various toys, including a Tinkertoy set and a Bobo doll.

    • Different conditions were applied about aggressive and non-aggressive behavior demonstration.

    • After exposure, children were deliberately mildly annoyed before a test observation took place, where behaviors were recorded for 20 minutes using a one-way mirror to prevent detection of observation.

Categories of Aggression Measured

  1. Imitative physical aggression: Direct actions against the Bobo doll (e.g., striking with a mallet, punching).

  2. Imitative verbal aggression: Repetition of aggressive phrases from the model.

  3. Non-imitative aggression: Aggression toward objects other than the Bobo doll.

  4. Non-aggressive play: Instances where children played without aggression.

Results

  • Aggressive Model Group Impressions: Children who witnessed aggressive behavior were significantly more aggressive physically and verbally compared to those in other groups.

  • Mean Scores from Table 4.1 (quantitative data):

    • Boys showed higher mean imitative physical aggression scores (e.g., M = 25.8 with male model) than girls (e.g., M = 7.2).

  • Non-aggressive model group exhibited much lower aggression than aggressive models, especially among girls.

  • Observational Insights: Children recognized sex-typed behaviors during observations, revealing biases in reactions to male versus female aggression.

Conclusion

  • The study's outcomes substantiate that observation and imitation are crucial mechanisms for learning aggression without the necessity for reinforcement.

  • All four hypotheses were validated through the findings, indicating robust patterns of imitation influenced by gender and model behavior.

Ethical Considerations

  • Potential for harm to children through increased aggression during observation. Also included was the ethical dilemma of deliberately annoying children, raising concerns for psychological distress during the study.

Strengths and Weaknesses of the Study

  • Strengths:

    • Laboratory setting provided control over extraneous variables, enhancing reliability and validity.

    • Higher inter-observer reliability due to pre-structured observational methods.

    • Clear definitions helped improve observational measures.

  • Weaknesses:

    • Small sample size may limit generalizability.

    • Similarity among children (attending the same nursery) could skew results (i.e., low diversity of backgrounds).

    • Lack of long-term follow-up regarding the permanence of learned behaviors.

Applications of Findings

  • Findings suggest practical applications in media consumption for children, including the use of content rating systems and parental controls to mitigate exposure to aggressive behaviors in media.