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Beck Depression Inventory

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The Beck Depression Inventory:
This instrument was developed by Aaron T. Beck who is a pioneer cognitive therapist. This instrument is commonly called the BDI and was developed in 1961. It was adapted in 1969 and a copyright was obtained in 1979. In developing the instrument Beck used a series of questions which enabled him to adequately measure the strength severity and complexity of depression. There are two versions of BDI, a long version which has 21 questions mostly used to measure specific symptom common with all patient suffering from depression. The shorter version which is composed of seven questions is meant to be used in a primary healthcare setting, with main purpose to evaluate, and monitor changes in of depression.
The BDI is a level B measuring instrument which means someone with a Master’s degree in counseling can administer this instrument. The is a good instrument to measure depression in people ages 20 t0 80 old and it is available in many languages. The time needed to administer this questionnaire is between 3 and 10 minutes. It can also be administered verbally by a trained administrator.
The questions in this instrument are weighted a numerical value of zero to three, with three being the highest score on each question.
Patients are asked to rate their symptom for each question for a period of two weeks. The patient is the one who rates himself, therefore, this instrument’s results are subjective. The sum total is the calculated, and interpreted to

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