Reliability
This refers to the consistency of a measuring instrument. It can be assessed in terms of inter-rater reliability, which is when another psychologist get the same results and internal consistency.
There are a range of scales to measure OCD symptoms. There are general scales to measure anxiety levels and specific scales to measure obessessions and compulsions. The Yale- Brown Obessessive Compulsive Scale is a semi structured interview to assess symptoms, severity and responsiveness to treatment. Sections 1 and 2 ask patients what obssessions and compulsions they have experienced now or in the past. Section 3 has 10 short questions asking how the obssessions and compulsions interfere with daily functioning.
WOODY assessed 54 patients using Y-BOCS and found good internal consistency. Inter rater reliability was excellent. Test retest results after 48 days was lower than desirable, this might be due to the patient getting better or worse.
JAKES believes that there are sub groups of patients who differ in the nature of their obessession, it is suggested there may be different origins so may need different treatments.
Comments
No comments have yet been made