Toward the end of Jenna's first semester of clinical training, her supervisor suggested that she reassess Justin using tests from her original battery and compare the results. Her battery contained three different measures of depression. Two showed remarkable improvement, and the third only a little improvement. Jenna and her supervisor compared the item content of all three instruments and discovered that the dissenting measure focused mainly on the identification of long-standing difficulties and, therefore, was not a sensitive measure of psychotherapeutic change.
the world beyond goes somewhat out of focus. Measurement in personality and psychopathology is the same way: Our view of the subject matter beyond is always somewhat obscured by particularities of the measuring device and by biases inherent in the source of the information.
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