In Bandura et al.'s (1961) study on the transmission of aggression, how did the researchers control for individual differences in baseline aggressiveness among the nursery children prior to group allocation?
They randomly allocated all 727272 participants to the three conditions to ensure baseline aggression was naturally distributed.
They pre-rated each child on four 555-point scales of aggressive behaviour and then arranged them in triplets of similar aggressiveness to be distributed across the conditions.
They administered a standardized parental questionnaire measuring home aggression and excluded any children scoring in the top or bottom 10%10\%10%.
They conducted a structured observation of a 101010-minute play session for each child to rate them on physical aggression alone.
152 exam-style questions on OCR A Level Psychology External influences on children's behaviour, covering Bandura et al. (1961): Transmission of aggression and Chaney et al. (2004): Funhaller study. Each one has a worked solution and a mark scheme showing where the marks go.