Callum is a 24-year-old man who stands at 6 feet 6 inches tall, considerably taller than his parents and his younger sister, who is a high-achieving medical student. During his youth, Callum required extensive speech therapy for developmental language delays and struggled to maintain attention in class, often leading to him being placed in remedial support groups where he was labeled a 'lost cause' by his educators. Although he was a talented competitive rower, he was banned from his local club at age 17 after physically assaulting an opponent after a close race. Recently, Callum was arrested following a violent road-rage incident where he smashed another driver's car window.
Callum’s father believes his son's aggressive temperament is fundamentally biological, pointing to his physical size and childhood developmental delays. However, Callum's defense solicitor argues that Callum has simply internalised the negative labels given to him by teachers and police, leading to a self-fulfilling prophecy.
Evaluate XYY syndrome as an explanation of Callum'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.
