Schizophrenia

• Positive symptoms of SZ

  When something is added or gained to their behaviour/personality
• negative symptoms of SZ

  when the ability to perform a action is lost. absence of normal thinking.
• hallucinations

  a false perception in a sensory modality without an external stimulus. they can be visual, somatic, gustatory or auditory.

  -positive symptom
• delusions

  a false belief despite undeniable evidence to the contrary.

  -positive symptom
• speech poverty

  The ability to speak freely is dimished. There are changes in the pattern of speech and word salads/neologisms.

  -negative symptom
• avolition

  lack of motivation to complete tasks with an end goal. this can lead to poor hygiene and inability to work or socialise.

  -negative symptom
• What is symptom overlap in the context of schizophrenia?

  When two disorders share similar symptoms
• What is comorbidity in the context of schizophrenia?

  Presence of multiple disorders simultaneously
• Definition of reliability in context to classification of SZ

  How far the classification system produces the same diagnosis for the same set of symptoms.
• definition of validity for the classification of sz

  whether the diagnosis is correct. validity is assessed by looking at whether the treatment works.