Liam and Noah are identical twins who grew up in the same family home and attended the same secondary school. Recently, they both completed a validated personality questionnaire as part of a careers workshop. They were surprised to find that Liam scored much higher for the trait of extraversion than Noah. Use your knowledge of genotype and phenotype to explain why their extraversion scores differed.
Practise AQA A Level Psychology Biological approach with exam-style questions for A Level Psychology. 49 questions, matched to the AQA A Level Psychology (7182) specification and written in Paper 1, Paper 2 and Paper 3 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.
