Leo is 21 years old, exceptionally tall, and has a very athletic build. He has been in and out of trouble with the justice system since his mid-teens.
When Leo was young, he was much slower to develop fluent speech than his older brother. Throughout primary and secondary school, Leo found it hard to stay focused and was frequently disciplined for being hyperactive and disruptive. He was a keen member of the local youth basketball club but was permanently excluded after physically confronting a referee. As a teenager, Leo was prone to sudden outbursts of temper and physical fights. He left school at 16 with below-average exam results, which frustrated his parents as his brother had easily transitioned to university.
Leo has recently been arrested following a physical altercation during a attempted shoplifting incident. His mother believes his aggressive tendencies are down to his biological makeup, whereas his father argues that Leo has simply structuralised' the 'troublemaker' label he was given by teachers and police when he was younger.
Evaluate XYY syndrome as an explanation of Leo's behaviour.
You must make reference to the context in your answer.
Practise Edexcel A Level Psychology Content with exam-style questions for A Level Psychology. 1,059 questions covering Bowlby's work on attachment, Ainsworth and the Strange Situation, Research into deprivation, Research into privation, Research into day care, Cross-cultural research into attachment, Autism, Individual differences, and Developmental psychology, matched to the Edexcel A Level Psychology (9PS0) 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.
