Leo has recently been diagnosed with a psychiatric condition by a private practitioner using the DSM-5. However, when his NHS GP reviews his case, they refer to the ICD-11 and express doubts about the initial diagnosis. Leo's partner, Sam, is a student nurse and is now concerned about the reliability of Leo's clinical diagnosis.
Explain whether Sam's concerns about the reliability of Leo's diagnosis are justified.
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.