Tobias has recently started smoking cigarettes regularly and finds himself craving them within an hour of waking up. His sister, a biology student, explains that his brain chemistry is adapting to the nicotine.
With reference to Tobias, outline the neurochemical explanation for nicotine addiction.
Practise Edexcel A Level Psychology Content with exam-style questions for A Level Psychology. 1,059 questions covering Diagnosis of mental disorders (4 Ds), Classification systems (DSM and ICD), Schizophrenia and one other disorder, Treatments for the two disorders, 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.
