issues in diagnosis and classification

• what is reliability?

  Consistency. 2 different psychologists give the same diagnosis for the same person
• validity?


  Diagnosis is correct/ accurate
• Co-morbidity? 


  One or more additional disorders or diseases occur at the same time. reduces validity of diagnosis.
• Symptom overlap 


  Symptoms of sz overlap with symptoms of other disorders
• Gender bias? 


  over or under diagnosing one of the genders
• culture bias?

  over tendency to diagnose people with sz from certain cultures