Asperger's syndrome is no longer considered a disorder in the current DSM-5, which health care professionals use to diagnose psychological disorders. Many clinicians had trouble conceptualizing this change and changed the measurement practices multiple times within the course of the year to assess their patients. It is now very difficult for the clinicians to compare the data from the year because of:

Question

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The change in diagnostic criteria for Asperger's syndrome is an example of instrumentation, which refers to changes in the measuring tool or methodology used in research or clinical practice. The clinicians changed their measurement practices multiple times within the year to adapt to the new DSM-5 criteria, making it difficult to compare data over time. The other options (A, C, D) are not relevant to the given scenario.

Asperger's Syndrome Is No Longer Considered a Disorder in the Current