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AO1 – Sample
The study used one participant, Little Albert, a 9-month-old infant raised in a hospital environment.
He was selected because he was described as calm and emotionally stable.
AO3 – Generalisability
Using a single infant means findings lack generalisability to the wider population.
Albert may not represent all children, especially as his background (hospital upbringing) may have influenced his behaviour.
There is also debate about his identity, which further reduces population validity.
AO1 – Methodology
The study was a controlled lab experiment.
Watson and Rayner manipulated the IV (pairing the white rat with a loud noise) and measured the DV (Albert’s fear responses).
Baseline testing was conducted to ensure Albert had no prior fear.
AO3 – Validity
High control increases internal validity, as extraneous variables were minimised (e.g. noise made out of sight).
However, the artificial setting reduces ecological validity, as the situation is not reflective of real-life learning environments.
AO1 – Procedure
Albert was first exposed to a white rat (NS) with no fear response.
The rat was then paired with a loud noise (UCS) which caused distress (UCR).
This pairing was repeated several times until conditioning occurred.
AO3 – Reliability
The procedure was highly standardised and carefully documented (including filming).
This means the study is replicable, increasing reliability.
However, due to ethical issues, it cannot be replicated today, limiting reliability in practice.
AO1 – Results
Albert developed a fear of the white rat (CS → CR: crying).
The fear response generalised to similar stimuli (rabbit, Santa mask).
The response also transferred to different settings, showing conditioning had occurred.
AO3 – Application
The study provides insight into how phobias may develop through classical conditioning.
It has led to therapies such as systematic desensitisation to treat phobias.
However, it may not explain all phobias, as some involve cognitive factors.